Post on 28-Jul-2020
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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
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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
4) Rs.1950 5) None of these
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
4) Rs.200 5) None of these
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
4) Rs.42 5) None of these
Answers: 1-3 2-1 3-3 4-4 5-5 6-1
n email: help@eenadupratibha.net÷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
4) Rs.9000 5) None of these
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) Rs.11750 5) None of these
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
4) Rs.2990 5) None of these
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
4) Rs.1250 5) None of these
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
4) Rs.1800 5) None of these
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
4) Rs.5000 5) None of these
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