05:00 pm dr. hariom gangwar · 2020-06-22 · given certain substances called biological response...
TRANSCRIPT
01
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Root hair absorbs water from soil through
(A) Turgor pressure
(B) Ion exchange
(C) Osmosis
(D) None of the above.
02
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If the size of fruits diminishes in plants, which
mineral ion should be added to soil
(A) Calcium
(B) Boron
(C) Copper
(D) Chlorine.
03
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Synthesis of ADP + Pi ATP in grana
photosynthesis is
(A) Phosphorylation
(B) Photophosphorylation
(C) Oxidative phosphorylation
(D) Photolysis.
04
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Which cell does not respire
(A) Mesophyll cell
(B) Sieve tube cell
(C) Epidermal cell
(D) Cork cell.
05
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Pruning of plants promotes branching due to
sensitisation of axillary buds by
(A) Gibberellin
(B) Ethylene
(C) IAA
(D) Cytokinin.
06
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Cancer is caused due to activation of ..... to ..... and/or
inactivation of ......
(A) Oncogene, tumour suppressor gene, protooncogene
(B) Tumour suppressor gene, oncogene, protooncogene
(C) Protooncogene, oncogene, tumour suppressor gene
(D) Oncogene, protooncogene, tumour suppressor gene
07
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Reaction of a-ketoglutaric acid with ammonia to
form glutamic acid is
(A) Oxidative amination
(B) Reductive amination
(C) Transamination
(D) Ammonification.
08
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Formation of ATP in photosynthesis & respiration
is an oxidation process which utilises the energy
from
(A) Cytochromes
(B) Ferridoxin
(C) Carbon dioxide
(D) Electrons.
09
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Carbon dioxide is liberated during
(A) Photosynthesis
(B) Respiration
(C) Transpiration
(D) Ascent of sap.
10
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Short day plant is
(A) Xanthium
(B) Pisum
(C) Cucumis
(D) Avena.
11
Match the columns I and II, and choose the correct combination
from the options given
Column I Column II
a. Neoplasm 1. Hematopoietic cell tumour
b. Benign tumour 2. Bone cartilage tissue cancer
c. Carcinomas 3. Malignant tumour
d. Sarcoma 4. Cancer of epithelial tissues
e. Lymphomas 5. Noncancerous tumour
6. Initiation of new tumours
(A) a - 2, b - 5, c - 4, d - 3, e – 6 (B) a - 6, b - 4, c - 3, d - 2, e - 1
(C) a - 3, b - 5, c - 4, d - 1, e – 2 (D) a - 3, b - 5, c - 4, d - 2, e - 1.
12
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Ringing/girdling experiment was first performed
by
(A) Hartig
(B) Strassburger
(C) Godlewski
(D) Bose.
13
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Which one is an essential mineral, not constituent
of any enzyme but stimulates the activity of many
enzymes
(A) Zn
(B) Mn
(C) K
(D) Mg.
14
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Cytochromes are
(A) O2 acceptors
(B) H2 acceptors
(C) Electron acceptors
(D) H2O acceptors.
15
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Ganong’s respiroscope is employed for
demonstrating
(A) Heat during respiration
(B) CO2 during fermentation
(C) CO2 during aerobic respiration
(D) Evolution of oxygen during photosynthesis.
16
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Bending of stem towards light is
(A) Photoperiodism
(B) Heliotropism
(C) Photonasty
(D) Hydrotropism.
17
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Tumor cells have been shown to avoid detection and
destruction by immune system. Therefore the patient are
given certain substances called biological response modifiers
(BRM) which activates their immune system and helps in
destroying the tumor. Identify the BRM.
(A) Alpha interferon
(B) Alpha lactalbumin
(C) Alpha-1 antitrypsin
(D) Gamma globulin.
18
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Guttation is the process of elimination of water
from plants through
(A) Stomata
(B) Wounds
(C) Lenticels
(D) Hydathodes.
19
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In plants, nitrate is reduced to ammonia state in
two steps. In second step, electrons are donated by
(A) Ferredoxin
(B) Nitrate reductase
(C) Nitrite reductase
(D) Cytochroma b5.
20
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Which is correct about chlorophyll a and b in
leaves of higher plants
(A) Both are present in equal proportion
(B) Chlorophyll a is more than chlorophyll b
(C) Chlorophyll a is less than chlorophyll b
(D) Chlorophyll b is ten times more than
chlorophyll a.
21
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How many ATP molecules are released when one
molecule of glucose is oxidised in our liver cells
(A) 36
(B) 38
(C) 2
(D) 8.
22
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Movement stimulated by external factor is
(A) Spontaneous movement
(B) Paratonic movement
(C) Physical movement
(D) Autonomic movement.
23
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Fill in the blanks
1. In ...a..., a piece of the suspected tissue cut into thin sections is
stained and examined under microscope (...b...) by a
pathologist
2. In radiography, ...c... are used
3. In CT scan, ...d... are used.
(A) a-biopsy, b-histopathological studies, c-X rays, d-gamma rays
(B) b-biopsy, a-histopathological studies, d-X rays, c-gamma rays
(C) b-biopsy, a-histopathological studies, c-X rays, d-gamma rays
(D) a-biopsy, b-histopathological studies, c-X rays, d-X ray.
24
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Influx of K+ ions into guard cells and efflux of H+
ions from guard cells lead to
(A) Exosomosis
(B) Plasmolysis
(C) Closing of stomata
(D) Opening of stomata.
25
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Salt respiration is
(A) Linking of ion movement with respiratory chain
(B) Active increase in respiration during mineral
absorption
(C) Decrease in respiration during salt absorption
(D) Secretion of salt through respiratory channels.
26
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The size of chlorophyll molecule is
(A) Head 15 ×15 Å, tail 20 Å
(B) Head 20 × 20 Å, tail 25 Å
(C) Head 15 × 15 Å, tail 25 Å
(D) Head 10 × 12 Å, tail 15 Å.
27
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Alcoholic fermentation occurs in the presence of
(A) Zymase
(B) Amylase
(C) Invertase
(D) Maltase.
28
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Common biosynthetic inhibitor of GA is
(A) CCC
(B) Jasmonic acid
(C) Citric acid
(D) Lactic acid.
29
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Medicinal plant harvested from wild for
anticancer compound is
(A) Taxus baccata
(B) Datura stramonium
(C) Rauwolfia serpentina
(D) Ocimum sanctum.
30
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Water is lost through hydatchodes. Hydathodes
(A) Remain closed at night
(B) Remain always open
(C) Remain closed during day
(D) Remain open during day.
31
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Phytotron is meant for
(A) Controlled irradiation
(B) Induction of mutations
(C) Controlled humidity
(D) Growing plants under controlled environment.
32
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Algae often float on surface of water during day but
sink down during night due to
(A) Evolution and trapping of oxygen bubbles during
the day in their photosynthesis
(B) Becoming light as they consume most of their food
in the night
(C) Warming action of sun during the day
(D) Release of absorbed air by warming of water.
33
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Photoperiodism is associated with
(A) Auxin
(B) Chlorophyll
(C) Gibberellin
(D) Florigen.
34
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Prolonged water-logging kills plants due to
(A) Stoppage of root respiration
(B) Dilution of soil nutrients
(C) Dilution of plant cell sap
(D) Leaching of nutrients.
35
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Which of the following statements are not true
(a) One ATP yields 32 kJ of energy
(b) Pentose phosphate pathway was discovered by Dickens
(c) When tripalmitin is used as a substrate, R.Q. is 0·7
(d) Energy released by one molecule of glucose on
complete oxidation corresponds to 1292 kJ.
(A) a, b and d (B) a and d
(C) c and d (D) a, c and d
36
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Gene responsible for nitrogen fixation is
(A) Nif
(B) Nitrogenase
(C) Yeast alanine tRNA synthetase
(D) RNA synthetase.
37
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The number of chlorophyll molecules in a
quantasome is
(A) 50-100
(B) 500-600
(C) 300-400
(D) 200-250
38
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During night, a person should not sleep under a
tree because the tree
(A) Releases O2 during night
(B) Does not release CO2 during night
(C) Releases CO2 during night
(D) Releases water during guttation.
39
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Which of the following is a long day plant
(A) Poppy
(B) Xanthium
(C) Paddy
(D) Soyabem.
40
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A twig kept in water having some salt remains
fresh for longer period due to
(A) Decrease in transpiration rate
(B) Exosmosis
(C) Decrease in bacterial degradation
(D) Absorption of more water.
41
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Farmers of a particular region are concerned that premature
yellowing of leaves of pulse crop might cause decrease in the yield.
Which treatment could be beneficial to obtain maximum seed yield
(A) Application of iron and magnesium to promote chlorophyll
synthesis
(B) Frequent irrigation of crop
(C) Treatment of plants with cytokinins alongwith a small does of
nitrogen fertilizer
(D) Removal of all yellow leaves and spraying the remaining
green leaves with 2, 4, 5-T.
42
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Chief functions of leaves are
(A) Transpiration and photosynthesis
(B) Respiration and photosynthesis
(C) Respiration and digestion
(D) Respiration and transpiration.
43
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A molecule of ATP is formed as an electron passes
from
(A) Cyt c to Cyt a
(B) Cyt c to Cyt b
(C) Cyt a to Cyt c
(D) Cyt b to Cyt c.
44
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Pineapple can be made to produce fruits
throughout the year by application of
(A) IAA, IBA
(B) NAA, 2, 4-D
(C) Phenyl acetic acid
(D) Cytokinins.
45
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Rate of transpiration higher than rate of water
absorption shall cause
(A) Growth
(B) Leaf fall
(C) Wilting
(D) Death.
46
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Nitrifying bacteria convert
(A) Nitrate to nitrogen
(B) Ammonia to nitrogen
(C) Nitrogen into soluble form
(D) Ammonia to nitrate.
47
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When cell converts light energy into chemical energy,
which of the following reaction would take place
(A) AMP + iP = ADP
(B) ATP – iP = ADP
(C) ADP + iP = ATP
(D) GDP + iP = GTP
48
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Which is correct for ADP
(A) Two high energy bonds
(B) One high energy bond
(C) Three high energy bonds
(D) None of the above.
49
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Beta vulgaris is
(A) SDP
(B) LDP
(C) DNP
(D) SLDP.
50
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Which of the following scientists is credited with
the mechanism of opening and closing of stomata
related to K+ exchange
(A) Levitt
(B) Sayre
(C) Scarth
(D) Lloyd.
51
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Transpiration-cohesion tension theory operates in
(A) Active absorption
(B) Apoplastic movements
(C) Active and passive absorption
(D) Passive absorption.
52
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Water absorption by root hairs occurs until
(A) Concentration of water in the cell sap is higher
(B) Salt concentration in cell sap is higher
(C) They are separated from the soil by a
selectively permeable membrane
(D) Water potential is lower.
53
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Which is produced during water stress that brings
stomatal closure
(A) Ethylene
(B) Abscisic acid
(C) Ferulic acid
(D) Coumarin.
54
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Transpiration facilitates
(A) Electrolyte balance
(B) Absorption of water by roots
(C) Opening of stomata
(D) Excretion of minerals.
55
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An RBC and a plant cell having same O.P. are placed
in distilled water
(A) None undergoes any change
(B) Plant cell swells up and bursts but there is no
change in RBC
(C) Both decrease in size and collapse
(D) RBC swells up and bursts but plant cell remains
about the same size.
56
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Root pressure is maximum when
(A) Transpiration is high and absorption is low
(B) Transpiration is very low and absorption is high
(C) Transpiration is very high and absorption is high
(D) Transpiration and absorption both are slow.
57
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Which is not caused by deficiency of mineral
(A) Chlorosis
(B) Etiolation
(C) Necrosis
(D) Shortening of internodes.
58
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Complete girdling ultimately kills the tree due to
(A) Starvation of root
(B) Stoppage of photosynthesis
(C) Non-movement of minerals
(D) Non-movement of water.
59
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For formation of ethanol, pyruvic acid is first
changed to acetaldehyde by enzyme
(A) Pyruvate dehydrogenase
(B) Pyruvate decarboxylase
(C) Alcohol oxidase
(D) Alcohol dehydrogenase.
60
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Drooping of Tamarind leaves after sunset is
(A) Photonasty
(B) Phototaxis
(C) Phototropism
(D) Chemotaxis.
61
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Little leaf/leaf rosetting is deficiency symptom of
(A) Zn
(B) Mn
(C) Fe
(D) B.
62
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The process of photosynthesis is
(A) Reductive; exergonic and catabolic
(B) Reductive, endergonic and catabolic
(C) Reductive, exergonic and anabolic
(D) Reductive, endergonic and anabolic.
63
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Which is product of oxidative pentose phosphate
pathway
(A) Pyruvic acid
(B) Acetyl CoA
(C) NADH2
(D) NAD (P) H.
64
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At the time of seed germination, digestive enzymes
are induced to be formed under the influence of
(A) Cytokinin
(B) Gibberellins
(C) Ethylene
(D) Auxin.
65
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An element essential as electron carrier is
(A) Potassium
(B) Zinc
(C) Calcium
(D) Iron.
66
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Chlorophyll b is
(A) C54H70O6N4Mg
(B) C55H70O6N4Mg
(C) C55H72O5N4Mg
(D) C46H72O5N4Mg
67
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Glucose administered orally will be used up in
(A) Excretion
(B) Digestion
(C) Respiration
(D) Circulation.
68
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Cut or excised leaves remain green for long if
induced to root or dipped in
(A) Gibberellins
(B) Cytokinins
(C) Auxins
(D) Ethylene.
69
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Which of the following shows importance of mineral ion
found in middle lamella of plant cells
(A) Associated with the formation of bipolar spindle
during cell division
(B) Essential for splitting of water during
photosynthesis
(C) Required for absorption and utilisation of calcium
(D) Maintenance of ribosomal constituents.
70
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The percentage of light energy utilised for
photosynthesis by higher plants is
(A) 42%
(B) 50
(C) 10
(D) 1-2.
71
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A reaction catalysed by an enzyme not found in
mitochondrial matrix
(A) Conversion of pyruvic acid to acetyl CoA
(B) Oxidative decarboxylation of a-ketoglutaric acid
(C) Oxidation of succinic acid
(D) Cleavage of succinyl CoA.
72
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A green plant will turn yellow if placed in the
dark. This is called
(A) Etiolation
(B) Dormancy
(C) Chlorosis
(D) Phototropism.
73
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Which micronutrient activates enzyme urease
involved in nitrogen metabolism
(A) Boron
(B) Molybdenum
(C) Zinc
(D) Nickel.
74
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The empirical formula for chlorophyll a is
(A) C35H72O5N4Mg
(B) C65H70O6N4Mg
(C) C55H72O5N4Mg
(D) C45H70O6N4Mg.
75
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Oxalosuccinic acid, a transient intermediary
compound of Kreb's cycle is
(A) 6-carbon compound
(B) 5-carbon compound
(C) 4-carbon compound
(D) 3-carbon compound.
76
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Exponential growth occurs in
(A) Yeast
(B) Bacteria
(C) Asexual reproduction
(D) All of the above.
77
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Which of the following is mobile mineral element
in plants
(A) Ca
(B) Mo
(C) Cu
(D) Fe.
78
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Both respiration and photosynthesis require
(A) Sunlight
(B) Green cells
(C) Cytochromes
(D) Organic substrate
79
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Which of the following is used as a cellular
respiration indicator
(A) Lactic acid
(B) Ethanol
(C) Schiff's reagent
(D) Tetrazolium chloride.
80
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Falling of floral parts, leaves and fruits from the
mother plant is called
(A) Senescence
(B) Photoperiodism
(C) Abscission
(D) Vernalisation.