fci ag iii biological sciences paper iii solved

SSC Food Corporation of India (FCI) Recruitment Exam 2012Main exam for Assistant Grade – III Posts

Solved Paper of Biological Sciences held on 15 April 2012

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1. The echological niche of an organism denotes a) the habit of an organism b) its status within a particular community c) its strucutre and feeding habits d) the climatic factors of an organism

2. Rubber is obtained from the latex of _________ . a) stem of Euphorbia spp b) stem of Carica papaya c) stem of Hevea brasiliensis d) fruit of Achras sapota

3. Which of the following does not require external water for fertilization? a) Mosses b) Ferns c) Cycads d) Liverworts

4. The sporangia of a conifer are located on the a) scales of the cones b) tips of the needles c) base of the needles d) axils of the branches

5. The transfusion tissue is present in the _________ leaves. a) Dryopteris b) Cycas c) Pinus d) Cycas and Pinus



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6. The number of Cotyledons in Pinus seeds are a) single b) two c) three d) many The cotyledons are the “seed leaves” produced by the embryo. Pines are conifers, and are neither monocots (one cotyledon) nor dicots (two cotyledon). The mature pine seed contains an uncurved embryo with many cotyledons.

7. The conical habit of Pinus is because of a) efficiency of water movement in plants b) mutual compition between branches c) compitition between neighbouring pine trees for sunlight d) effect of auxin on the growth of stem tip and axillatry branches

8. The largest ovules are found among a) Monocots b) Dicots c) Gymnosperms d) Angiosperms

9. _________ is an example of a plant which bears seeds but not fruit. a) Cyas b) Pea c) Pinus d) Selaginella

10. Which one is not true regarding energy flow through ecosystem? a) Energy inflows balance outflows b) Even energy transfer is accompanied by dispersion of energy into non available heat c) The organism near the begining of the food chain gets smaller amount of energy d) A shorter food chain can support a larger amount of organisms



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11. Spot the organisms that are not symbionts. a) Rhizobium and root of legume plant b) Nostoc and coalliod root of Cycas c) Algae and Fungi d) Vanda and an angiosprem plant

12. The natural cycling of carbon between the organisms and the environment is accomplished through the process of

a) Photosynthesis and respiration b) Radiation and immigration c) Fermentation and oxidation d) Isolation and dispersal

13. Motile sperm cells are found in all the following except: a) Cycas b) Funaria c) Pteris d) Rhizopus

14. __________ is an example of symbiotic association of an organism. a) Alage b) Fungi c) Bacteria d) Root nodule of legume plant Plant symbiosis : Lichens are peculiar plants formed by the union of a fungus and an alga. They play an

important part in the formation of soils, being the first to colonize rocks. The relationship between the legume and rhizobia is symbiotic, or mutually beneficial. The bacteria invade plant root hairs and multiply in the outer root tissue.



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15. Gymnosperms are characterised by a) Naked seeds b) Seed enclosed in fruits c) Winged seed d) Multiple sperms

16. __________ is the edible part of Pinus seed. a) Pericap b) Female gametophyte c) Diploid perisperm d) Endosprem

17. The tissue in the roots of Vanda that absorbs water from the atmosphere is called a) Aernchyma b) Xylem c) Phloem d) Velamen

18. Quiescent centre is present in a) Root apex b) Shoot apex c) Vegetative apex d) Flower apex

19. Tunica and Corpus organization occurs in a) Root apex b) Shoot apex c) Cambium d) Inter-calary meristems



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20. Which of the following tissues form the bulk of storage organ? a) Parenchyma b) Collenchyma c) Sclerenchyma d) Aerenchyma

21. In a forest ecosystem green plants are a) the primary producers b) the secondary consumers c) the decomposers d) both secondary consumers and decomposers

22. Various modifications in the form and structure in the leaves of xerophytes are meant a) to protect from air b) to protect from excess transpiration c) to check excess liberation of CO2

d) to help in absorption of O2

23. Etiolation in plants is due to a) Total darkness b) Full sunlight c) Vitamin deficiency d) Virus disease Etiolation is a condition caused by the growth of plants in the absence of light. An etiolated plant cannot complete

synthesis of chlorophyll when grown in darkness, so that the leaf is yellowish or whitish, due only to the presence of yellow carotenoids.In etiolated plants, there are no normal chloroplasts, because in the constant darkness the typical membrane and protein portions of the organelle cannot be made. So Etiolation in platns is due to the absence of a growth-inhibiting secretion formed by the chloroplasts In the light.



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24. Sunken stomata are found in a) Epiphytes b) Hydrophytes c) Mesophytes d) Xerophytes

25. Opuntia is a cactus which is a a) Ephemeral animal b) Succulent c) Non-succulent d) Cladode Opuntia is a succulent plant. it is a genus of cactus that contains more than 360 species of plants.

The most commonly known plant in the optunia genus is the nopal opuntia, or prickly pear cactus.

26.The ecological factors of soil and its environment and their interactions with the growth of plants comes under the following factors: a) Biotic factors b) Abiotic factors c) Edaphic factors d) Climatic factors

27. _________ is an example of a free floating hydrophyte. a) Eichhornia b) Vallisneria c) Nymphaea d) Typha



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28. An ecosystem cannot continue functioning without a constant input of energy because a) it is lost at each trophic level b) it flows in an ecosystem that lacks organisms that store energy c) an ecosystem includes decomposers in its community d) of climate change and fast ubanization

29. The largest amount of water that is availalbe for the plants from soil is a) Gravtiational water b) Capilary water c) Hygroscopic water d) Soil water vapour

30. Polytene chromosome are found in a) salivary glands of men b) salivary glands of animals c) salivary glands of women d) salivary glands of Drosophila

31. What are the chromosomes with more than two chromatids called? a) Lampbrush chromosomes b) Polytene chromosomes c) Acrocentric chromosomes d) Allosomes

32. Genes for antibiotic resitance are located in a) Chromosome DNA b) Plasmid c) RNA d) Polymerase



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33. A codon refers to a) a unit of recombination b) a unit that undergo mutation c) a set of bases in DNA which code one amino acid d) any functional unit of DNA

34. __________ enzyme that helps in DNA replication. a) Nucleotidase b) Arginase c) DNA polymerase d) Protease

35. __________ helps in DNA replication. a) Amylase b) Ligase c) Luciferase d) Hexokinase

36. A colour blind man marries the daughter of a colour blind person. Then in their progeny a) none of their daughters are colour blind b) all their daughters are colour blind c) all their sons are colour blind d) half their sons are colour blind

37. There is no masking of expression of genes in Neurospora because a) it has a short generation span b) it is haploid c) it requires minimum number of nutrients d) it is diploid



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38. Tyloses are balloon-like ingrowths seen in vessels of a) primary xylem developing from adjoining parenchyma b) secondary xylem developing from adjoining parenchyma c) primary xylem developing from adjoining fibres d) secondary xylem developing from adjoining fibres

39. Which of the following statements is wrong? a) Primary growth causes increase in height whereas secondary growth accounts for increase in diameter b) The bark is a tissue outside cortex c) The cambium is composed of two kinds of initials d) In woody plants cambium functions for few years

40. ______________ is the characteristic of a vascular bundle of monocot stem. a) Open and surrounded by a sclerenchymatous bundle sheath b) Closed and not surrounded by a bundle sheath c) Closed and surrounded by a bundle sheath d) Open and not surrounded by a bundle sheath

41. Parenchymatous tissue is characterized by a) uniform thickening b) thickening of the corners c) lignified walls d) intercellular spaces

42. Cambium is considered a lateral meristem because a) it increases the height and diameter of a stem b) it gives rise to lateral branches c) it increases the girth of a plant d) it increases the length of a plant



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43. Primary growth is caused by (or) the length of a plant axis increases by a) Apical meristem b) Lateral meristem c) Dermatogen d. Plerome

44. A meristem may be defined as the group of cells which a) do not divide b) conserve food and fight against bio-stresses c) divide continuously to give rise to new cells d) elongate and add to the group of cells

45. Knowing that albinism is determined by a recessive gene in man, presence of albinism in the children brone to a normal couple proves that a) both the mother and father are heterozygous for albinism b) the father is homozygous normal but the mother is heterozygous c) the father is homozygous for albinism but mother is heterozygous d) father and mother are homozygous normal

A very good question from Genetics branch that i would like to discuss here. Please put your answer in comment section if i am wrong in my explanation. I have not studied Biology as a subject in my course during graduation, but i always like to read this subject in spare time as this subject play an important role in our daily life.

Firstly the meaning of Albinism:

Albinism occurs when one of several genetic defects makes the body unable to produce or distribute melanin, a natural substance that gives color to your hair, skin, and iris of the eye. The ability to produce melanin is anchored in our genes. If the genes for melanin production are missing or altered little or no color is produced. Albinism results from inheritance of recessive gene alleles and is known to affect all vertebrates, including humans. It is a genetic condition which means that it can be passed from parents to their children. People with Albinism have a white skin, blonde or reddish hair and brown, grey or blue eyes.People with albinism have little or no pigment in their eyes, skin, or hair. Humans, animals, and even plants can have albinism.

In mammals, the female is the homozygous sex with two X chromosomes [XX], while the male is heterozygous, with one X and one Y chromosome [XY]. Genes on the X or Y chromosome are called sex linked genes.



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Here in the question, two things are clearly given i.e. presence of albinism in child and normal couple. A normal couple means that a male with out Albino gene married to a female having Albino gene which act as a sailent carrier of Albino gene for next generation (because child shows the presence of Albino gene). I have used following notations to explain it more Xa : X chromosome carries allele ‘a’ for albinism

Ya : Y chromosome carries allele ‘a’ for albinism

X : X chromosome with out allele ‘a’ for albinism

Y : Y chromosome with out allele ‘a’ for albinism

Now, Homozygous Albino vs Heterozygous Albino: A person is said to be homozygous Albino if it received the Albino gene from both its mother and father. [ XaYa ] : Male Homozygous Albino [ XaXa ] : Female Homozygous Albino

[ XX] : Normal Female Homozygous with out Albino gene

A heterozygous Albino will contain one and only one Albino gene from either the father or mother.

[ XaY] : Male Heterozygous Albino [ Albino gene received from mother ]

[ XYa ] : Male Heterozygous Albino [ Albino gene received from father ]

[ XXa ] : Normal Female Heterozygous Albino [ Albino gene received from mother and act

as a sailent carrier for next generation ]

[ XY] : Normal Male Heterozygous with out Albino gene

As per question, for a normal couple and the presence of albinism in child: Male [ X

a] [ X ] Female

[ X ] [XXa] [XX]

[ Y ] [XaY] [XY]

So, the correct answer should be modified as :

the father is heterozygous normal but the mother is heterozygous. All humans are heterozygous for recessive alleles that, if present homozygously, would be lethal. This is sometimes referred to as the “genetic load.”



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46. In an E.coli according to the operon theory an operator gene combines with a) inducer gene to ‘switch on’ b) regulator gene to ‘switch off’ c) regulator protien to ‘switch off’ structural gene transcription d) regulator protien to ‘switch on’ structural gene transcription

47. Which of the following is haploid in gymnosprems? a) Pollen grains, megaspore, root b) Pollen grains, megaspore, nucellus c) Megaspore mother cell, root, leaf d) Endosprem, pollen grains, megaspore

48. Cycas has two cotyledons but is not included in angiosperms because of a) stems like monocot b) large ovule c) naked ovule d) compound leaves

49. Chromosome theory of heredity was formulated for the first time on the basis os the following observations: a) Chromosomes exhibit segregation and independent assortment during meiosis b) There are a fixed number of chromosomes in each cell of an organism c) Chromosomes are the main structures in nucleus d) Determination os sex is through sex chromosomes

50. Self-replicating cytoplasmic particles are capable of transmitting traits in inheritance to a) Mutagenes b) Regulator genes c) Plasma genes

d) Operator genes



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51. Nyctalopia is caused due to the defficiency of vitamin a) A b) C c) D d) E Nyctalopia also called Night blindness is caused by defficiency of vitamin A.

52. Gout is characterised by the accumulation of a) Urea

b) Ammonia c) Uric acid d) Ornithine Gout is a metabolic disease characterized by the accumulation of excessive uric acid in the blood.

53. Number of pollar bodies produced after first meiotic division during oogensis is a) 1 b) 2 c) 3 d) 4

54. Centrolecithal eggss are found in a) Fishes b) Mammals c) Insects d) Reptiles

55. The Indian scientist who received the Nobel Prize for having synthesised ‘Polyribonuleotides’ is a) Marshall Warren Nirenberg b) Venktaraman Ramakrishanan c) Amrtya Sen d) Har Gobind Khorana The Nobel Prize in Physiology or Medicine 1968 was awarded jointly to Robert W. Holley (USA), Har Gobind Khorana (India) and Marshall W. Nirenberg (USA) “for their interpretation of the genetic code and its function in protein synthesis”.



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56. Baldness in man is an example for _____________ genes. a) Sex-influenced b) Sex – limited c) X – Linked d) Z – Linked

57. Polymorphism may be developed by ___________ selection. a) Natural b) Directional c) Stablizing d) Disruptive

58. Assertion (A) : Sodium ions move slower than glucose molecule across the plasma memberane. Reason (R) : Plasma membrane contains protien. a) Both A nd R are true but R is not the correct reason for A b) Both A and R true, and R is the correct reason for A c) A is true, but R is false d) A is false, but R is true 59. The niche of a population is the a) place where it lives b) geographical area it covers c) set of conditions and resources it uses d) set of interactions it has with other populations

60. The science of improving the hereditary qyualities of human species of future generation is called a) Genetics b) Euthenics c) Epigenesis d) Eugenics



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61. The defficiency of _______________ vitamin causes beri-beri. a) Riboflavin b) Niacin c) Pantothenic acid d) Thiamine

62. The synthesis of prothrombin by the liver cells is stimulated by a) Vitamin A b) Vitamin K c) Vitamin E d) Vitamin D

63. Which one of the following minerals is essential for blood coagulation? a) Calcium b) Phosphorus c) Magnesium d) Sodium

64. Limulus is an example of a living fossil that belongs to a) Onychophora b) Arachnida c) Mollusca d) Ratitae

65. First recombinant vaccine is availalble for a) HIV b) Small pox c) Hepatitis B d) Polio



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66. Polio is spread through a) Mosquito b) Water contamination c) Air contamination d) Direct contact Polio is air-borne, spread through the respiratory system.

67. Which of the following is not correct about the size of the organisms?

a) Viruses 0.07 0.10 b) Amoeba 8.00 15.0 c) Bacteria 0.5 2.50 d) Euglena 100 200 ��Bacteria 0.20 2.50

68. Acetylcholine is secreted by a) Endothelial cells b) Nerve cells c) Brunner’s gland d) Pancreatic exocerine cells

69. The term chromosome was coined by a) W. Flemming b) W. Waldeyer c) Richard Altman d) Seymour Bezer



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70. In which stage does the reduction in chromosome number take place during meiosis? a) Prophase – I b) Anaphase – I c) Metaphase – I d) Metaphase – II

71. A cross between an F1 hybrid and any one of the parentsw from which it is derived is a) Monohybrid cross b) Dihybrid cross c) Back cross d) Test cross

72. - Thalassaemia major is a) inability to synthesize adult haemoglobin b) premature red blood cell destruction c) haemoglobin and shortening of red blood cell life span

d) no functional and separate delta and - globin chain genes

73. Crossing over brings a) cytoplasmic reorganization b) recombination of genes c) complete linkage d) no significant change

74. Somatic hybrids are produced by a) protoplasmic fusion b) tissue culture c) pollen culture d) hybridoma process



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75. ____________ enzyme catalyses the removal of hydrogen from one substrate and passes it on to a second substrate. a) Oxidase b) Dehydrogenase c) Oxygenase d) Hydrolases

76.Wilson’s disease is due to the defficiency of a) Cobalt b) Iodine c) Copper d) Fluorine

77. Daily requirement of vitamin B1 is ________ mg. a) 1-5 to 2.0 b) 0.5 to 1.0 c) 3 to 5 d) 1 to 2

78. These enzymes exist in two or more forms which have the same function, but they differ physically and chemically a) Apoenzymes b) Multienzymes c) Exoenzymes d) Isoenzymes



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79. Choose the wrong pair. a) Flame cells Platyhelminthes b) Nephridium Amphioxus c) Malpighian tubules Insects d) Green glands Crustacea

80. Egg with miniral yolk evenly distributed is called as a) Isolecithal b) Telolecithal c) Alecithal d) Centrolecithal

81. Hydrochloric acid in the stomach is secreted by a) Argentaffin cells b) Peptic cells c) Mucous neck cells d) Oxyntic cells Parietal cells (also called oxyntic cells) are the stomach epithelium cells which secrete gastric acid (hydrochloric acid).

82. Enzyme sucrose converts sucrose into a) Glucose + Fructose b) Glucose + Glucose c) Glucose + Galactose d) Glucose + Maltose

83. If the centromere divides the chromosome into two qnequal arms, it is termed as a) Telocentric b) Acrocentric c) Submetacentric d) Metacentric



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84. __________ is an autoimmune disease. a) Glomerulonephritis b) Meningitis c) Rheumatoid arthritis d) Hepatitis

85. Development of gut is called as a) Neurogenesis b) Notogenesis c) Mesogenesis d) Enterogenesis

86. The process by which cells gradually specialize to undergo changes in the shape and function is known as _____________ differentiation. a) Norhologicl b) Physiological c) Chemical d) Cytological

87. Which of the following statements is not correct about test tube baby? a) This method provides baby to infertil couple b) People who produce fertile egg but their health may not permit to bear children c) It provides opportunity to get babies of desired sex d) The rate of success is high



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88. Which one of the following is not a characteristic feature of cancer? a) A tumour arises from an existing tissue or cells of the body b) They have greater potentiality for growth and multiplication

c) They carry out the functions of normal adult cells d) They have large and irregular nuclei

89. Carcinoma means a) a tumour arising from any connective tissues b) a tumour arising from any fibrous tissues c) a tumour arising from epithelial cells d) tumours of bone

90. First land vertebrates – amphibians developed during _______________ period. a) Devonian b) Cambrain c) Ordovician d) Silurian

91. Which of the following is not an arthopod character exhibited by Peripatus? a) Clawed and pseudo segmented walking legs b) Presence of thick cuticle c) Presence of trachea as respiratory organ d) Presence of antennae

92. Select the correct sequence of evolution with reference to elephant. a) Meritherium – Stegodon – Mammoth – Palaemastodon – Elephas – Loxodonta b) Meritherium – Mammoth – Palaemastodon – Stegodon – Elephas – Loxodonta c) Meritherium – Palaemastodon – Stegodon – Mammoth – Elephas – Loxodonta d) Meritherium – Palaemastodon – Elephas – Stegodon – Mammoth – Loxodonta



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93. Assertion (A) : Dark-skinned people and blacks are more prone to UV exposures. Reason (R) : Efficiency of UV rays are as carcinogen depends on melanin pigmentation. a) A is correct, but R is wrong b) A is wrong, but R is correct c) Both A and R are correct, and R is the explanation of A d. Both A and R are correct, and R is not the explanation of A

UV light penetrates the skin for a few millimetres only so that its effect is limited to epidermis. The efficiency of UV light as carcinogen depends upon the extent of light-absorbing protective melanin pigmentation of the skin.

94. Which of these is a non-esential amino acid? a) Valine b) Gylcine c) Lycine d) Tryptophan

95. Supperssion of gene of one locus by a gene in other locus is called a) Epistasis b) Pleiotrophy c) Co-dominance d) Incomplete dominance

96. Mobile segments of DNA that can disrupt the function of the gene that they are insert into and cause are known as a) Meiosis b) Transposons c) Mutagens d) Missence



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97. The type of interaction between two species where protozen Trichonympha lives in the gut of termites for cellulose digestion is reffered to as a) Commensalism b) Mutualism c) Neutralism d) Parasitism

98. Centres for regulation of heart beat are situated in the brain at a) Cerebral hrmispheres b) Medulla oblongata c Cerebellum d) Pons Varolii

99. A : Insulin increases conversion of glucose into glycogen B : Insulin increases the oxidation of glucose C : Insulin reduces blood sugar level a) A and B only are correct b) A and C only are correct c) A, B and C all are correct and Aand B are not the reason for C d) A, B and C all are correct and Aand B are the correct reason for C

Insulin decreases blood sugar levels. When your blood sugar level rises, the Islets of Langerhans, a special group of cells in the pancreas secrete MORE insulin. Insulin increases glucose utilization by making cells more permeable to glucose, and blood sugar levels are returned to a normal range. Insulin promotes not only the entry of glucose into the cells, but also facilitates its oxidation within the cells.

100. Which of these is secreted by corpus luteum in a pregnant woman? a) Progesterone b) Estrogen c) Androgen d) Relaxin



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101. Amino acids are used as food additives for which of the following reasons? a) As natural antibiotics b) As natural growth inhibitors c) For nutritive purposes d) As antioxidants Nyctalopia also called Night blindness is caused by defficiency of vitamin A.

102. Lycopene is an important antioxidant normally present in high level in a) Artichokes b) Bananas c) Tomatoes d) Soyabeans

103. The most common hydrocarbon in natural gas is a) Methane b) Butane c) Propane d) Ethane

104. The main effect of DDT on birds is a) fewer feathers b) reduced growth c) blindness d) thinner egg-shell

105. Which of the following is most hazardous? a) Crop waste b) Yard waste c) Paper waste d) Battery



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106. The fertile part of soil is a) mineral water b) soil air c) humous d) soil water

107. The main source of air pollution is a) Factory exhaust b) Automobile exhaust c) Firewood d) Bad breath The major source of air pollution in industrialized countries is car exhaust. Vehicular exhaust is a major source of carbon monoxide. Carbon monoxide (CO) is highly dangerous. You can’t see it or smell it. In fact it is often called “The Silent Killer”. Even a short term exposure to high levels of Carbon monoxide can aggravate lung disease causing Asthma attacks.

108. Majority of all living species on the Earth are found in a) Tundra region b) Antarctica c) Tropical rainforest d) Temperate region

109. Cell organelle found only in plants a) Mitochondria b) Plastids c) Golgi complex d) Ribosomes



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110. Enzymes are polymers of a) Amino acids b) Fatty acids c) Sugar d) Ribosomes

111. Which trait can effectively be confered into a plant by a transgene? a) Resistance to insects b) Resistance to humans c) Tolerance to light d) Tolerance to snowfall

112. What is the general term used to describe the degradation of pollutants using a biological apporach? a) Biostimulation b) Bioremediation c) Biodegradation d) Bioprocessing

113. Which genera of micro-organisms have the most diverse pathways for bioremediation? a) Pseudomonas b) Salmonella c) Legionella d) Colletotrichum



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114. What is nanotechnology? a) The individual manipulation of molecules and atoms to create materials with novel or improved properties b) The creation of new terms to describe very small, almost unimagniable particle in physics c) The terms used to describe the size of cellular components d) The transition of molecular biology into the physical sciences

115. The colourless, odourless, tasteless radioactive gas present within homes and buildings is a) Argon b) Radon c) Xenon d) Krypton

116. Pedology is the study of a) Rock b) Coal c) Ecosystem d) Soil

117. The absorption of zinc in the human digestive tract may be inhibited by the presence of a) Plant fibre b) Animal fibre c) Water d) Oil

��Zinc absorption is inhibited by phytic acid or phytates – phosphorus compounds – present in cereal grains. Phytate is not digestible to humans or nonruminant animals. Phytic acid is a substance found in cereal grains, nuts, seeds, and legumes that prevents premature germination and stores nutrients for plant growth. It also reduces the absorption of the important minerals Ca, Mg, Fe and Zn when consumed by humans. Phytic acid also has potential to reduce the digestibility of protein.



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118. A species that is unique to a defined place or region and not found anywhere else is called a) Endangered b) Endemic c) Indigeneous d) Extinct

119. The main cause of global rising sea levels is a) Thermal expansion b) Melting of glaciers c) Melting of polar ice d) Melting of Antarctica

120. Anemometer is used to measure a) wind density b) wind velocity c) wind speed d) wind gravity

121. Ketone bodies are produced by a) brain b) liver c) kidney d) muscles Ketone bodies are manufactured by the Liver when too much protein is being used for energy.

122. Normal urine has the following components a) Chlorides b) Glucose c) Urea d) Creatinine

123. The most peneterating rays are a) alpha rays b) beta rays c) gamma rays d) delta rays



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124. At what stage of cell division does the centromere divide? a) Prophase

b) Telophase c) Metaphase d) Anaphase

125. Genetic mapping is based on the linkage between it on to a second substrate. a) loci b) muton c) recon d) cistron Genetic linkage is the tendency of certain loci or alleles to be inherited together.

126.Most of the plants obtain nitrogen from the soil in the form of a) nitrate b) nitrite c) nitric acid d) nitrogen gas Nitrate (NO3) is the second form of nitrogen which is available for plant uptake. In most soils, nitrate is highly mobile.

127. The shape of metacentric chromosome is a) T-shaped b) Rod shaped c) S-shaped d) V-shaped



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128. Which of the following is not an autoimmune disorder? a) Diabetes mellitus b) Haemolytic anemia c) Rheumatic fever

d) Cholera

129. The natural anticoagulant of blood in the vessle is a) EDTA b) Oxalate c) Citrate d) Heparin

130. Western blotting technique is used to detect the a) protiens b) DNA c) mRNA d) rRNA

131. Which of the following is not a renewable energy resource? a) Wood b) Wave c) Biogas d) Natural gas

132. Streptomycin is used to cure the diseases caused by a) Bacteria b) Virus c) Yeast d) Fingi



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133.Antihaemorrhagic vitamin is also called as a) Vitamin E b) Vitamin K c) Vitamin D d) Vitamin B12

134. The study of the action is known as a) Pharmacognosy b) Pharmacology c) Pathology d) Parasitology

135. Cholesterol level in blood is increased in all except a) Nephrotic syndrome b) Obstructive jaundice c) Hypoparathyroidism d) Hyperthyroidism

136. COLA refers a) Crystine ornithine leucine arginine b) Crystine ornithine lysine alanine c) Crystine ornithine leucine alanine d) Crystine ornithine lysine arginine

137. Erythropoietin, the hormone involved in synthesis of RBCs, is released to blood circulation by a) red blood cells b) bone marrow erythroid progenitor cells c) renal cells d) hepatic cells



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138. Which among the following does not bind calcium? a) Calcitonin b) Calbindin c) Calcineurin d) Calmodulin

139. Plasma bicarbonate is transported across red blood cells by a) Pectrin b) Ankyrin c) Carbonic anhydrase d) Band 3 protein

140. Assertion (A) : Animals store energy in the form of triglycerides. Reason (R) : Triglycerides can be converted to glucose whenever needed. a) Both A and R are true, and R is the correct explanation of A b) Both A and R are true, and R is not the correct explanation of A c) A is true and R is false. d) A is false and R is true.

Glucose is the form of sugar used by human body as fuel to create energy in the cells. Humans and other animals store energy (which are not needed for immediate use) in the form of fat (triglycerides) in specialized cells called adipocytes (which means “fat cells.”). Insulin triggers the formation of triglycerides. Some cells, such as brain cells, can only use glucose for energy. A portion of the triglyceride molecule i.e. glycerol molecule contained in triglycerides can then be converted to glucose.

141. The device used to introduce air into the liquid in a fermentor is termed as a) impeller b) baffles c) sprager d) thermostate



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142. The Indian Collection of Industrial Microorganisms is located at a) Chandigarh b) Pune c) Punjab d) Delhi

143. The first virus crystallised by Stanely in 1935 was a) Cauliflower mosaic virus b) Tobacco mosaic virus c) Gemini virus d) Wound tumour virus

144. During World War II, the microorganism used as an agent of bio-terrorism was a) Bacillus anthracis b) Brucella abortus c) Resinia pestis d) Clostridium botulinum

145. The complete viral particle is known as a) Virion b) Viroid c) Prion d) Virusoid

A complete virus particle, known as a virion, consists of nucleic acid surrounded by a protective coat of protein called a capsid.The virion has a spherical(ish) shell covered with surface proteins, and inside the genome is made up of only 1 type of nucleic acid (DNA or RNA). They have no metabolic activity outside the living cells. So a virion must rely on the metabolism of the cell it infects. The function of the capsid is to protect the nucleic acid from inactivation by nucleases and other deleterious agents in the environment.



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146. The discovery of human blood group was made by a) Emil Von Behring b) Ehrlich c) Landsteiner d) Milstein

Karl Landsteiner won the Nobel Prize in 1930 for his discovery of the ABO blood groups. He discovered that there are several types of human blood and established the ABO-system based on haemagglutination.

147. “Penicillin” the wonder drug was discovered first by Alexander Fleming from the culture of a) Penicillium notatum b) Penicillium chrysogenum c) Penicillium funiculosum

d) Penicillium stoloniferum

148. The term Cistron means a a) unit of function b) unit of mutation c unit of recombination d) unit of linkage

149. Who developed the Rabies vaccine? a) Robert Koch b) Robert Gallo c) Walther Hesse d) Louis Pasture

French chemist and biologist Louis Pasteur successfully tests his rabies vaccine on a human subject in 1885. On July 6, 1885, the vaccine was administered to Joseph Meister, a 9-year-old boy who had been attacked by a rabid dog.



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150. Sugar in the nucleotide is a) Hexose b) Pentose c) Priose d) Heptose

151. More dominant group of microorganisms in the soil is a) Bacteria b) Fungi c) Actinomycetes d) Protozoa

152. TDT is a) Thermal dealy time b) Thermal divide time c) Thermal death temperature d) Thermal death time

153. The first viral pathogen discovered was a) HIV b) TMV c) HPV d) YMV Tobacco Mosaic Virus (TMV) was the first virus to be discovered (1892) over a century ago and was the first virus ever purified.

154. Plague is caused by a) Bacterium b) Fungus c) Alga d) Virus



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155. Selman A. Waksman was awarded Nobel Prize for the discovery of a) Penicilin b) Streptomyces c) Streptomycin d) Penicillium

156. Robert Koch has been awarded Nobel Prize in 1905 for the discovery of a) Anthrax b) Cholera c) Tuberculosis

A) a and b B) a and c C) a alone D) c alone

157. Organisms, which utilize simple inorganic compounds, are termed as a) Phototrophs b) Autotrophs c) Heterotrophs d) Necrotrophs An autotroph is an organism that can produce its own food using light, water, carbon dioxide, or other chemicals.Autotrophs are a vital part of the food chains of all ecosystems.They serves as primary producers in a food chain, such as plants on land or algae in water.Autotrophs reduces carbon dioxide (add hydrogen to it) to make organic compounds. Autotroph can be phototrophs or lithotrophs (chemoautotrophs). Phototrophs use light as an energy source, while lithotrophs oxidize inorganic compounds, such as hydrogen sulfide, elemental sulfur, ammonium and ferrous iron.They take energy from the environment in the form of sunlight or inorganic chemicals and use it to create energy-rich molecules such as carbohydrates.

158. Cross wall formation during cell division is accelerated by a) Ribosomes b) Lysosomes c) Endosomes d) Mesosomes

159. The group of bacteria which includes obligate intracellular parasites is a) Rickettsias b) Mollicutes c) Archaeobacteria d) Actinomycetes



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160. Which of the following methods is employed for disposal of sludge that is contaminated with heavy metals heavily? a) Incineration b) Drying c) Landfilling d) Composting

161. The addition of sugar to an egg ____________ the heat stablity of protiens. a) increases b) decreases c) does not change d) increases and then decreases

162. Deterioration of fat in the presence of oxygen is due to the enzyme a) Lipase b) Protease c) Lipoxygenase d) Peptidase

163. In cheese manufacture, curd is formed by the addition of a) Renin b) Protease c) Peptidase d) Amylase

164. Excessive intake of polished rice causes deficiency of a) Vitamin A b) Vitamin B1

c) Vitamin D d) Vitamin K

165. The fat content of toned milk should be a) less than 1.5% b) less than 3% c) more than 3% d) more than 5%



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166. Bitter pit is a) Chemical injury b) Physiological injury c) Mechanical injury d) Microbial disease

167. What is the TSS of fruit syrup? a) 20% b) 45% c) 65% d) 80%�� Total Soluble Solid (TSS) is one of the more important quality factors for most fruit juices. TSS of fruit represent various chemical substances present in it in soluble form. The amount of TSS present in the fruit sample is also considered to be a reliable index in judging its maturity. Fruit syrup may be clear or opaque, but it must contain ornage juice content not less than 25 % and water soluble substance at least 65% with low acidity.

168. Diethyl pyrocarbonate is used as a preservative for a) Spices b) Fruit juices c) Nuts d) Vegetables

169. A toxic element which may contaminate food is a) Zinc b) Copper c) Lead d) Calcium

170. Tofu is a processed product of a) Kidney bean b) navy bean c) Broad bean d) Soyabean



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171. Appertizing is a process called canning and is named after a) Nicholas Apert b) Michael Apert c) John Apert d) Williams Apert Basic principle of Canning process was developed and commercialized by Nicholas Appert, a French confectioner and distiller in 1810. Nicholas Appert, French inventor of airtight food preservation is also known as ‘Father of Canning’. Canning is the process in which foods are placed in jars or cans and heated to a temperature that destroys microorganisms and inactivates enzymes. This heating and later cooling forms a vacuum seal. The vacuum seal prevents other microorganisms from recontaminating the food within the jar or can.

172. Consider the following statements: A. Butter is an example for oil in water emulsion. B. Milk is an example for water in oil emulsion. a) Statement A is correct and B is wrong b) Statement B is correct and A is wrong c) Statements A and B are wrong d) Statements A and B are correct Milk is oil in water emulsion and Butter is water in oil emulsion.

173. Consider the following statements: A. Soyabean contains 40% protien and 20% fat B. The quality of protien is poor because of the process of the trypsin inhibitor. a) Statement A is correct and the explanation given in B is wrong b) Statement A is correct and the explanation given in B is correct c) Statements A and B are correct d) Statements A and B are wrong

174. Choose the best answer. The toxin found in groundnut kernel is

a) Aflatoxin b) Patulin

c) Aminotoxin d) Paratoxin



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175. Choose the correct answer. Decomposition of carbohydrates by microorganisms or enzymes is called as a) Putrefaction b) Fermentation c) Canning d) Dextrinisation

176. Consider the following statements: A. Freezing at very low temperature (-60 oC) is cryogenic freezing. B. The refrigerants used are oxygen and neon a) A and B are true b) A is true, but B is false c) B is true, but A is false d) A and B are false Temperature = -150 oC, Liquid Neon and Liquid Oxygen as refrigerants

177. Consider the following statements: A. Milk is rich in calcium and vitamin D. B. On heating milk combines with casein and is converted to calcium caseinate. Of these a) Statement A is correct and B is wrong b) Statements A and B are correct c) Statements A and B are wrong d) Statement A is wrong and B is correct

178. Freeze crack is seen when foods are frozen by a) Air freezing b) Contact freezing c) Immersion freezing d) Cryogenic freezing

179. Hedonic rating test is used to measure a) sensitivity b) preference c) difference d) quality



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180. Puffed products are dried to a moisture content less than a) 12% b) 8% c) 4% d) 16%

181. In which region of India, is shifting cultivation widely followed? a) South b) North c) North-East d) North-West

182. The toxic substance gossypol is formed in a) Rapeseed b) Linseed c) Cotton d) Fababean

183.Pigeonpea sterility mosaic is transmitted by a) Aceria cajani b) Besmia tabaci c) Myzus persicae d) Orosius albicinctus

184. The state which ranks first in sugarcane productivity in India is a) Maharashtra b) Uttar Pradesh c) Tamilnadu d) Karnatka

185. Frequent ploughing of soil destroys a) Soil texture b) Soil structure c) Soil colour d) Soil type



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186. Potato late blight is caused by a) Fungus b) Bacterium c) Virus d) Actinomycete

187. Leaf spot with concentric zonations are observed in a) Cercospora b) Pyricularia c) Helminthosporium d) Alternaria

188. Banana bunchy top is caused by a) Fungus b) Bacteria c) Virus d) Phytoplasma

189. Seasane phyllody is transmitted by a) White fly b) Aphid c) Jassid d) Lace wing

190. Fungi belonging to which sub-division is called as sac fungi? a) Basidiomycotina b) Ascomycotina c)Mastigomycotina d) Deuteromycotina

191. In India, which state is popularly named as Soya State? a) Andhra Pradesh b) Madhya Pradesh c) Uttar Pradesh d) Tamilnadu



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192. The highest protein is found in seeds of a) Begal gram b) Green gram c) Red gram d) Soyabean

193. Most serious disease of sugarcane is a) Red stripe b) Red rot c) Wilt d) Smuti

194. The most common amendment used for reclamation of alkali lands is a) Lime b) Gypsum c) Tank silt d) FYM

195. Biofertilizer suitable for red gram is a) Rhizobium b) Azospirillum c) Azolla d) Azotobacter

196. Cotton is susceotible to drift of a) Lasso b) Stomp c) Machete d) 2,4-D

197. The appearance of an organism in a given environment is called as a) genotype b) genome c) idiotype d) phenotype



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198. A windmill suitable for water lifting is a) single blade type b) double blade type

c triple blade type d) multiple blade type

199. The major protien in wheat flour is a) zein b) gluten c) oryzenin d) hordenine

200. Type of moisture that can be removed by common drying techniques is a) equilibrium moisture b) total moisture c) free moisture d) bound moisture

fci ag iii biological sciences paper iii solved

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