1.        Drastic changes of body features associated with puberty are mainly because of secretion of
a.   Estrogen from testes and testosterone from ovary
b.   Estrogen from adrenal gland and testosterone from pituitary gland
c.   Testosterone from testes and estrogen from ovary
d.   Testosterone from thyroid gland and estrogen from pituitary gland
 
2.        Learning is related to
a.   Hypothalamus
b.   Thalamus
c.   Cerebrum
d.   Cerebellum
 
3.        Which of the following statements about transmission of nerve impulse is incorrect?
a.   Nerve impulse travels from dendritic end towards axonal end
b.   At the dendritic end electrical impulses bring about the release of some chemicals which generate an electrical impulse at the axonal end of another neuron
c.   The chemicals released from the axonal end of one neuron cross the synapse and generate a similar electrical impulse in a dendrite of another neuron
d.   A neuron transmits electrical impulses not only to another neuron but also to muscle and gland cells
 
4.        Which of the following organs is not controlled by autonomous nervous system ?
a.   Heart
b.   Uterus
c.   Glands
d.   Eyes
 
5.        The substance that triggers the fall of mature leaves and fruits from plants is due to
a.   Auxin
b.   Gibberellins
c.   Abscissic acid
d.   Cytokinin
 
6.        The typical neuronal resting membrane potential measures between
a.   40 mv to – 80 mv
b.   30 mv to – 80 mv
c.   40 mv to – 90 mv
d.   40 mv to – 70 mv
 
7.        The growth of tendril in pea plants is due to
a.   Effect of light
b.   Effect of gravity
c.   Rapid cell divisions in tendiillar cells that are away from the support
     	d. Rapid cell divisions in tendrillar cells in contact with the support     	

8.        In reflex action, the reflex arc is formed by
a.   Muscles - receptor – brain
b.   Muscles - effector – brain
c.   Receptor - spinal cord – muscles
d.   Spinal cord - receptor – muscles
 
9.        Which of the following statements are true about brain?
i.   The main thinking part of brain is hind brain
ii.   Centers of hearing, smell, memory, sight etc. are located in fore brain
iii.   Involuntary actions like salivation, vomiting, blood pressure are controlled by the medulla in the hind brain
iv.   Cerebellum does not control posture and balance of the body
a. (i) and (ii)                          	b. (i), (ii) and (iii)
c. (ii) and (iii)                        	d. (iii) and (iv)
 
10.   Which of the following statements is correct about receptors?
a.   Gustatory receptors detect taste while olfactory receptors detect smell
b.   Both gustatory and olfactory receptors detect smell
c.   Auditory receptors detect smell and olfactory receptors detect taste
d.   Olfactory receptors detect taste and gustatory receptors smell
11.   Which two organs are connected by pons with the help of transverse band of nerves?
a.   Nerves of brain and spinal cord
b.   Both the cerebral hemispheres
c.   Cerebellum and central nervous system
d.   Sympathetic and parasympathetic
 
12.   Electrical impulse travels in neuron from:
a.   Dendrite→axon→axon end→cell body
b.   Cell body→Dendrite→axon→axon end
c.   Dendrite→cell body→axon→axon end
d.   Axon end→axon→cell body→Dendrite
 
13.   The plant hormone which is essential for cell division is
(a)   Ethylene
(b)   Auxin
(c)   Gibberellin
(d)   Cytokinin
 
14.   The activities of the internal organs are controlled by the
(a)   Central Nervous System
(b)   Peripheral Nervous System
(c)   Autonomic Nervous System
(d)   None of these
 
15.   The seat of intelligence and voluntary action in the brain is
(a)   Diencephalon
(b)   Cerebrum
(c)   Cerebellum
(d)   Medulla Oblongata
 
16.   The gap between two neurons is known as   	.
(a)   synapse

(b)   synopsis
(c)   impulse
(d)   synaptic node
 
17.   Which of the following is a plant hormone?
(a) Thyroxin              	(b) Cytokinin
(c) Insulin                  	(d) Oestrogen
 
18.   Tropic movements are
(a)   in response to light
(b)   in response to gravity
(c)   uni-directional
(d)   non-directional
 
19.   Artifical ripening of fruit is carried out by
(a)   Auxins
(b)   Ethylene
(c)   Abscisic acid (ABA)
(d)   Gibberellins
 
20.   Part of brain that controls respiration, heartbeat and peristalsis is     	.
(a)   Cerebrum
(b)   Cerebellum
(c)   Pons
(d)   Medulla
 
21.   The brain is responsible for
(a)   thinking.
(b)   regulating the heart beat.
(c)   balancing the body.
(d)   all of the above.
 
22.   Which of the following hormone is released by thyroid?
(a)   Insulin
(b)   Thyroxin
(c)      Trypsin
(d)   Pepsin
 
23.   Which body organ is surrounded by meninges?
(a)   Heart and Lungs
(b)   Brain & Heart
(c)   Brain and Spinal Cord
(d)   Spinal Cord and Lungs
 
24.   Part of brain that controls muscular co-ordination is     	.
(a)   Cerebrum
(b)   Cerebellum
(c)   Pons
(d)   Medulla
 
25.   Growth of the stem is controlled by
(a)   gibberellin
(b)   auxin

(c)   abscisic acid
(d)   cytokinin
 
26.   Wilting of leaves is caused by which hormone?
(a)   gibberellin
(b)   auxin
(c)   abscisic acid
(d)   cytokinin
 
27.   Which of the following hormones contains iodine?
(a) adrenaline            	(b) testosterone
(c) thyroxine              	(d) insulin
 
28.   Which part of brain controls the posture and balance of the body?
(a)   Cerebrum
(b)   Cerebellum
(c)   Pons
(d)   Medulla
 
 
29.   The substance that accelerates the growth in the stem is     	.
1.   auxin
2.   cytokinin
3.   enzyme
4.   vitamin
30.   The cells in our body that can be over a foot long are       	.
1.   muscle cells
2.   nerve cells
3.   bone cells
4.   blood cells
31.   Learning is related to                         	.
1.   hypothalamus
2.   thalamus
3.   cerebrum
4.   cerebellum
 
32.   Male hormone is                             	.
1.   Oestrogen
2.   progesterone
3.   adrenaline
4.   testosterone
 
33.   Endocrine glands are those which pour their secretions into .
1.   Blood
2.   Ducts
3.   sinuses
4.   any of the above

34.   In reflex action, the reflex arc is formed by                     	.
1.   muscles - receptor - brain
2.   muscles - effector - brain
3.   receptor - spinal cord - muscles
4.   spinal cord - receptor - muscles
35.   Auxins are                               	.
1.   Vitamins
2.   Enzymes
3.   Proteins
4.   Hormones
36.   The cerebellum is concerned with                           	.
1.   Conditioning
2.   Memory
3.   coordination and precision
4.   Intelligence
 
37.   The endocrine gland also known as 'master gland' is         	.
1.   hypothalamus
2.   pituitary
3.   pancreas
4.   adrenal
 
38.   Which of the following acts as both endocrine and exocrine glands?
1.   pituitary
2.   adrenal
3.   pancreas
4.   ovaries
 
39.   Cerebral hemispheres are centres of                 	.
1.   balance
2.   smell
3.   taste
4.   thinking
 
40.   Adrenaline increases                       	.
1.   heart rate
2.   blood pressure
3.   amount of glucose in blood
4.   all the above
 
41.   Junction of two neurons is called                       	.
1.   synapse
2.   end plate
   	3. axon   	

(d)   nervous and endocrine systems