learning is related to.. · 2020-04-28 · 3) cerebellum 4) medulla oblongata 16. part of ear...

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1. Action potentials are generated due to

1) Outflux K+

2) Influx of K+

3) Influx of Na+

4) Outflux of Na+

2. Crura cerebri connect pons with

1) Cerebral hemispheres

2) Hypothalamus

3) Cerebellar hemispheres

4) Limbic system

3. Which is not a part of brain stem?

1) Inferior and superior colliculi

2) Spinal cord

3) Pons 4) Medulla

4. Cells which adhere to the neurons and

capillaries are

1) Astrocytes 2) Mast cells

3) Ependymal cells 4) Schwann cells

5. Relay station between the cerebellum,

spinal cord and rest of the brain is

1) Medulla oblongata 2) Mesencephalon

3) Cerebrum 4) Pons varolii

6. Relative refractory period coincides with

1) Hyper polarization

2) Repolarization

3) Depolarization

4) Resting membrane potential

7. Arbor vitae are branched strips made up of

1) White matter 2) Grey matter

3) Pia mater 4) Dura mater

8. Choroid plexus is a network of

1) Nerves 2) Capillaries

3) Muscle fibers 4) Lymph vessels

9. The superior colliculi are twin bodies within

the corpora quadrigemina of the midbrain

that are involved in

1) Visual reflexes 2) Auditory reflexes

3) Olfactory reflexes

4) Release of pituitary hormones

10. Which part of the brain is involved in loss

of control when a person drinks alcohol?

1) Thalamus 2) Cerebrum

3) Pons varolii 4) Cerebellum

11. Important centres for heart rate, blood

pressure, respiration, swallowing, cough-

ing and vomiting are located in the

1) Cerebrum 2) Midbrain

3) Cerebellum 4) medulla oblongata

12. Learning is related to

1) Hypothalamus 2) Cerebrum

3) Cerebellum 4) Medulla

13. An injury to diencephalon may result in

1) Loss of memory

2) Difficulty in breathing

3) Loss of sensation of heat

4) Loss of intelligence

14. Scala tympani of cochlea terminates at

1) Round window 2) Oval window

3) Semi circular levels 4) Vestibule

15. The appetite and satiety centres in the

brain are located in

1) Hypothalamus

2) Cerebral hemispheres

3) Cerebellum 4) Medulla oblongata

16. Part of ear having hair cells that acts as

auditory receptors is

1) Basilar membrane 2) Tympanum

3) Stapes 4) Otolith organ

17. Chief function of crista and macula is

1) To perceive pressure

2) To receive vibrations

3) To maintain equilibrium 4) To hear

18. In a nerve cell potassium concentration is

1) Lesser on outer side

2) Greater on outer side

3) Equal on both sides

4) None of these

19. Primary visual area is located in

1) Diencephalon 2) Optic lobe

3) Cerebellum 4) Cerebrum

20. Nerves that are not found in frog but are

found in humans are

1) Glossopharyngeal and hypoglossal

2) Glossopharyngeal and spinal accessory

3) Spinal accessory and hypoglossal

4) Pneumogastric and hypoglossal

21. Which of the following is not involved in

knee jerk reflex?

1) Muscle spindle 2) Motor neuron

3) Brain 4) Inter neurons

22. Primary auditory area is located in the

lobes of cerebrum

1) Frontal 2) Temporal

3) Occipital 4) Parietal

23. Which of the following is not found in mam-

malian brain?

1) Subdural space 2) Sub-arachnoid space

3) Optocoel 4) Dura mater

24. You have two types of brains in petridish.

How would you distinguish the brain of a

mammal by?

1) Corpus callosum 2) Optic lobes

3) Cerebellum 4) Cerebrum

25. Read the following and identify the correct

statements.

i) Spinal cord extends from medulla oblon-

gata to superior border of fourth lumbar

vertebra

ii) Filum terminale is the non-nervous

fibrous tissue extends into coccyx

iii) Conus medullaris is the conical portion of

spinal cord between first and second

lumbar vertebrae

iv) Because of anterior, posterior horns of

white matter, grey matter is organised

into funiculi in spinal cord

1) i, ii 2) i, iv 3) ii, iii 4) ii, iv

26. The yellowish pigmented spot at the

posterior pole of the human eye lateral to

the blind spot is

1) Crista 2) Saccule

3) Macula lutea 4) Iris

27. What is the resting membrane potential of

nerve fiber?

1) −70 mV 2) −45 mV

3) +75 mV 4) 45 mV

28. The release of chemical messenger from

synaptic vesicle is under the influence of

these ions

1) Cl− 2) Fe++ 3) Mg++ 4) Ca++

29. The voltage required for raising the

membrane potential from -80 mV to

threshold potential during conduction of

nerve impulse is

1) −25 mV 2) 25 mV

3) −10 mV 4) 10 mV

30. In human eye, canal of Schlemn is present

at the junction of

1) Sclera and Cornea

2) Iris and Ciliary body

3) Retina and Choroid

4) Macula lutea and Optic disc

31. The three layers of retina in the order in

which they conduct impulses

1) Bipolar neurons, photoreceptor neurons,

ganglion cell layer

2) Ganglion cell layer, photoreceptor layer,

bipolar cell layer

3) Photoreceptor layer, bipolar cell layer,

ganglion cell layer

4) Ganglion cell layer, bipolar cell layer,

photoreceptor layer

32. In human brain, the part with ‘tree of life’

acts as

1) Gyroscope of the body

2) Brain warning centre

3) Thermostat of the body

4) Emotional hub

33. Arrange the following structures of spinal

cord from outer to inner side in the correct

sequence.

A) Central canal B) White matter

C) Dura mater D) Pia mater

E) Grey matter F) Arachnoid layer

1) ABCDEF 2) ABCFED

3) DEFCBA 4) CFDBEA

34. The part of internal ear that perceives ver-

tical movement is

1) Crista 2) Macula

3) Utricle 4) Saccule

35. In the human brain, paracoels are

connected to the diocoel by

1) foramen magnum

2) foramen of Monro

3) foramen ovale 4) fenestra ovalis

36. White matter of spinal cord is organized

into regions called

1) Horns 2) flocculi

3) collicoli 4) funiculi

37. Assertion (a): At resting phase the

axolemma has greater permibility to Na+

ions than to K+ ions

Reason (R): During hyper polarization, K+

voltage gates are said to be lazy gates

1) Both (A) and (R) are individually true, and

(R) is the correct explanation of (A)

2) Both (A) and (R) are individually true but

(R) is not the correct explanation of (A)

3) (A) is true but (R) is false

4) (A) is false (R) is true

38. Which of the following is not a character of

reflex action?

1) instantaneous 2) involuntary

3) conscious 4) Automatic

39. The following controls and integrates the

activities of autonomous nervous system

1) The little brain

2) the thermostat of the body

3) brain stem 4) the tree of life

40. Cauda equina is enclosed within

1) Spinal cord 2) neural canal

3) filum terminale 4) conus medullaris

41. What is the first step in the activation of

reflex arc

1) Activation of motor neuron

2) information processing

3) activation of receptor

4) activation of a sensory neuron

42. Non myelinated neurons are found in

1) white matter of brain

2) white matter of spinal cord

3) grey matter of brain

4) peripheral nervous system

43. Not a part of limbic lobe or limbic system of

brain is

1) Amygdala 2) hippocampus

3) cerebellum

4) inner parts of cerebrum

44. Hypothalamus is not related to this function

1) Controlling of body temperature

2) urge for drinking

3) urge for eating

4) thinking, reasoning

45.The visible coloured portion of the eye is

1) Retina 2) Iris

3) cornea 4) lens

46. Cornea in the fibrous tunic is a

1) Non Vascular and non transparent coat-

covering the coloured iris.

2) Vascular and transparent coat covering

the coloured iris.

3) Non-vascular but transparent coat cover-

ing the non coloured iris.

4) Non vascular but transparent and cover-

ing the coloured iris.

47. Observe the following presentation of an

action potential.

In the above diagram ‘5’ represents

1) Hyperpolarization due to influx of K+

2) Hyperpolarization due to efflux of K+

3) Resting potential due to influx of Na+

4) Hyperpolarization due to influx of Na+

48. What is the first step in the activation of

reflex Arc?

1) Activation of motor neuron

2) Information processing

3) Activation of receptor

4) Activation of a sensory neuron

Dr. M.R. PrasadSubject Expert

Writer

NEET-2020Zoology

Answers1-3; 2-1; 3-2; 4-1; 5-4; 6-1; 7-1; 8-2; 9-1;

10-4; 11-4; 12-2; 13-3; 14-1; 15-1; 16-1;

17-3; 18-1; 19-4; 20-3; 21-3; 22-2; 23-3;

24-1; 25-3; 26-3; 27-1; 28-4; 29-2; 30-1;

31-3; 32-1; 33-4; 34-4; 35-2; 36-4; 37-4;

38-3; 39-2; 40-2; 41-3; 42-3; 43-3; 44-4;

45-2; 46-4; 47-2; 48-3.

Learning is related to..?Neural Control and

Co-ordination

−100 mv

−50 mv

+50 mv

0 3

4

52

1

time →

1. Let the C.P of each book be Rs. 100

S. P. of 40 books = 110 × 40

= Rs. 4400

S. P. of 50 books = 120 × 50

= Rs. 6000

Total S.P. = Rs. 4400 + Rs. 6,000

= Rs. 10400

At a uniform profit of 15% S.P. of

90 books = 90 × 115

= Rs. 10350

Difference = Rs.10,400 − Rs. 10,350

= Rs. 50

If the difference is Rs. 50 then

C.P. = Rs. 100

If the difference is Rs. 40

100 × 40then C.P. = = Rs. 80

50

2. Let the cost price be Rs. 100

Then S.P. = Rs. 130. (at 30% profit)

if he buys 10% less, then

C.P. = Rs. 90

Difference in S.P. is (130 − 108) = Rs.22

If the difference in S.P. is Rs.22, the C.P. is

Rs. 100

if the difference in S.P. is Rs. 330,

300 then C.P. = × 100 = Rs. 1500

22

3. Cost price of 20 pens = 20 × 7

= Rs. 140

Cost price of 8 packets wax colours

= 8 × 22 = Rs. 176

Cost price of 6 calculators

= 6 × 175 = Rs. 1050

Cost price of 7 pencil boxes

= 7 × (14 + 7 + 22) = Rs. 301

∴ Total Cost = 140 + 176 + 1050 + 301

= Rs. 1667

4. Let the C.P. of 5 horses be Rs. x, then C.P.

of 10 cows = Rs (1600 − x)

∴ 15% − 10% (1600 − x) = Rs. 90

⇒ x = Rs. 1000

C.P. of 5 horses = Rs. 1000

1000∴ C.P. of one horse = = Rs.200

5

5. C. P of 120 litres = Rs. 3360

S.P of 80 litres at Rs. 32 = 80 × 32

= Rs. 2560

S.P. of 40 litres at Rs.24 = 40 × 24

= Rs. 960

∴ Total S.P of 120 litres

= 2560 + 960 = Rs. 3520

Profit = 3520 − 3360

= Rs. 160

160∴ Profit % = × 100 = 4.8%

3360

100 + 25% 6. 50 = × C.P

100 − 10

90 C. P = × 50

125

= Rs. 36

Profit and Loss 1. A person purchases 90 books and sells 40

books at a gain of 10% and 50 books at a

gain of 20%. Had he sold all of them at a

uniform profit of 15% he would have got

Rs.40 less. Find the cost price of each book.

1) Rs.70 2) Rs.65 3) Rs.80

4) Rs.120 5) None of these

2. A trader sells an article at a profit of 30%.

Had he purchased it at 10% less and sells

for Rs.330 less he would have gained 20%.

Find the cost price of the article.

1) Rs.1500 2) Rs.1200 3) Rs.1600


3. A student bought 20 pens, 8 packets of wax

colours, 6 calculators and 7 pencil boxes,

the price of one pen is Rs. 7, one packet of

wax colour is for Rs. 22, one calculator is for

Rs. 175 and one pencil box costs Rs. 14

more than the combined price of one pen

and one packet of wax colours. How much

amount did he pay to the shopkeeper?

1) Rs. 491 2) Rs. 1725 3) Rs. 1667

4) Rs. 1527 5) None of these

4. A man buys 5 horses and 10 cows for

Rs.1600. He sells horses at a profit of 15%

and cows at a loss of 10% if his overall prof-

it was Rs.90, what was the cost price of a

horse?

1) Rs.170 2) Rs.60 3) Rs.260


5. A man buys 120 litres of oil for Rs. 3360. He

sells 80 litres of oil for Rs. 32 per litre and

remaining at Rs.24 per litre. Find his overall

profit/loss%?

1) 3.6% loss 2) 4.2% profit

3) 4.8% loss 4) 2.8% loss

5) None of these

6. A dealer allows 10% discount on the list

price of a certain article and yet makes a

profit of 25% on each article. Find the cost

price of the article when list price is Rs.50.

1) Rs.36 2) Rs.32 3) Rs.38


Answers: 1-3 2-1 3-3 4-4 5-5 6-1

n email: [email protected]÷ªÙÞœüŒî¦ô¢Ù 28 Ôví‡öËÀ 2020

The cost price of a horse is?

Dr. G.S Giridhar

Subject Expert

Writer

Bank ExamsQuantitative Aptitude

1. A sum was invested at simple interest at a

certain rate for two years. It would have

fetched Rs.240 more had it been invested

at 3% higher rate. What was the sum?

1) Rs.8500 2) Rs.4500 3) Rs.5600


2. Population of a town in 2016 was 85000.

What will be the population in 2019, if it

increases annually at 10%?

1) 113135 2) 11400 3) 11500

4) 12500 5) None of these

3. The rate of simple interest on a certain

amount of money is 6% p.a. for the first

two years, 9% p.a. for next five years and

13% p.a. for the period beyond seven

years. If the total interest on a sum at the

end of ten years is Rs.9120, what is the

sum?

1) Rs.9500 2) Rs.10500 3) Rs.12500


4. What is the compound interest on

Rs.25000 for year at 8% per annum, inter-

est being calculated half yearly?

1) Rs.3225 2) Rs3050.50 3) Rs.3121.60

4) Rs.2995.50 5) None of these

5. A certain sum of money lent out at a certain

rate of simple interest per annum doubles

itself in 8 years. In how many years will it

treble itself?

1) 12 3) 18 3) 24

4) 16 5) None of these

6. A sum of money will become double in 3

years at compound interest. In what time

will it become four times itself?

1) 9 yrs 2) 6 yrs 3) 12 yrs

4) Can’t be determined 5) None of these

7. A certain sum of money becomes Rs.1250

in a span of 5 years and further to Rs.1700

in the span of 8 years at the same rate of

simple interest. What would be the amount

at the end of 12 years?

1) Rs.2325 2) Rs.2500 3) Rs.2650


8. What is the difference between simple and

compound interest for three years on

Rs.16000 at 8% p.a?

1) Rs.348 2) Rs.122 3) Rs.496

4) Can’t be determined 5) None of these

9. A sum of money amounts to Rs.1488 in 3

years at a simple interest. If the rate of inter-

est is raised by 25%, the sum amounts to

1560 during the same period. Find the sum.

1) Rs.1350 2) Rs.1500 3) Rs.1200


10. A sum of Rs.7200 is lent out in two parts

in such a way that the interest on one part

at 8% p.a for 3 years is same as on the

other part at 5% p.a. for 6 years. Find the

first part.

1) Rs.3200 2) Rs.3600 3) Rs.3300


11. A shopkeeper offers a discount of 20% on

the selling price. On a special sale day, he

offers an extra 25% off coupon after the

first discount. If the article was sold for

Rs. 3600, find the marked price of the arti-

cle.

1) Rs.8000 2) Rs.4500 3) Rs.6000


Answers

1-5 2-1 3-1 4-3 5-4 6-2 7-5 8-5 9-3

10-5 11-3

Explanations

1. It fetches Rs. 240 more in 2 years.

∴ It fetches Rs. 120 more in one year.

that means 3% = Rs. 120

100100% (sum) is × 120 = Rs. 4000

3

2. Population after 3 years (2019 − 2016) is

110% of 110% of 110% of 85000 = 113135

3. Let the principal be Rs. x

x × 2 × 6 x × 5 × 9 x × 3 × 13 ∴ + +

100 100 100

= 9120

x ⇒ (12 + 45 + 39) = 9120

100

⇒ x = Rs. 9500

14. As interest is calculated half yearly, 1

2

will be 3 half years and the rate percent will

be 4% per half year.

now, R = 4% and T = 3

4 3

C.I. = 25000 (1 + ) − 25000 100

= Rs. 3121.60

5. Let the principal be Rs. P and the amount

will be Rs. 2P

Rate of interest per annum is

100 × (2P − P) = = 12.5%

P × 8

100 × (3P − P) Required time is = 16 years

P × 12.5

Shortcut

amount doubles in 8 years means to get

100% interest it takes 8 years to become

treble means to get 200% interest it takes

8 + 8 = 16 years

6. Let the money be Rs. 100

it becomes Rs. 200 in 3 years

again Rs. 200 will become Rs. 400 in

another 3 years ( ...

compound interest)

∴ amount will become four times in

3 + 3 = 6 years

7. Interest for 3 years (8 − 5 years)

= 1700 − 1250 = Rs. 450

5Interest for 5 years = × 450 = Rs. 750

3

Principal = 1250 − 750 = Rs. 500

12Interest for 12 years = × 450 = Rs.1800

3

∴ Amount after 12 years

= 500 + 1800 = Rs. 2300

(300 + R) P × R2

8. Difference for 3 year is

1003

308 × 16000 × 100 ⇒ = Rs. 492.80

1000000

9. Rs. 1560 − Rs. 1488 = 72

25% of interest = Rs. 72

100 ∴ 100% interest = × 72 = Rs. 288

25

the interest for three years = Rs. 288

therefore principal = 1488 − 288

= Rs. 1200

10. Let the first part be Rs. x, then the second

part will be ( 7200 − x )

x × 3 × 8 (7200 − x) × 5 × 6∴ =

100 100

⇒ x = Rs. 4000

11. Let the marked price be Rs. 100

Selling price after 20% discount = 80% of

100 = Rs.80

Selling price after extra 25%

discount = 75% of 80 = Rs.60

If the S.P. is Rs. 60, the marked price is

Rs.100

Selling price is Rs. 3600 then the marked

100price = × 3600 = Rs.6000

60

Explanations

Simple and Compound Interest

Model Questions

learning is related to.. · 2020-04-28 · 3) cerebellum 4) medulla oblongata 16. part of ear...

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