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1. Part of the brain that controls muscular co-ordination is ______.
2. _______ causes wilting of leaves.
3. Heart beat is controlled by _______.
4. The movement of plant parts in response to certain chemicals is called ______.
5. _________ is the structural and functional unit of the nervous system.
6. _________ actions are controlled by the medulla.
7. Testosterone hormone is secreted by the ________.
8. Growth hormone is secreted by the _________ gland.

(1). Cerebellum, (2). Abscisic acid, (3). Medulla Oblongata, (4). Chemotropism, (5). Neuron, (6). Involuntary, (7). Testes, (8). pituitary

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1. The hind-brain is the main thinking part of the brain. (T/ F)
2. Nerves from all over meet in a bundle in the spinal cord on their way to the brain. (T/ F)
3. Gustatory receptors detect smell while olfactory receptors detect taste. (T/ F)
4. Plants have a nervous system for controlling and co-ordinating their activities. (T/ F)
5. The communication between the central nervous system and the other parts of the body is facilitated by peripheral nervous system. (T/ F)
6. A feedback mechanism regulates the action of the hormones. (T/ F)

(1). False, (2). True, (3). False, (4). True, (5). True, (6). True

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1. Name the three parts of the brain.
2. Name two plants hormones that help in the stem growth.
3. Name the hormone responsible for puberty in males and females.
4. What will happen if the intake of iodine in the diet is low?
5. Which part of the brain controls posture and balance of the body?
6. Which disease is found in human due to the deficiency of iodine?
7. What is the gap between two nerve cells called?
8. Which part of the brain is specialized for thinking hearing, smelling, seeing etc.? Which part of our brain detects the smell?
9. What reaction happens at the synapse between two neurons?

1. Fore-brain, mid brain and hind-brain.
2. Gibberellin and Auxin.
3. Testosterone in males and oestrogen in females.
4. If intake of iodine in the diet is low, its deficiency causes goitre.  
5. Cerebellum in hind brain.  
6. Goitre.
7. Synapse.
8. Cerebrum and mid brain.  
9. Transmission of stimulus.

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Section A	Section B
1). Neuron	a). Thyroid gland
2). Insulin	b). Reflex action
3). Thyroxine	c). Unit of Nervous system
4). Blinking of eyelids	d). Pancreas/Regulates Blood Sugar Level
5). Master gland	e). Pituitary
6). Endocrine gland	f). Hormone
7). Female hormone	g). Estrogen

(1). > (c), (2). > (d), (3). > (a), (4). > (b), (5). > (e), (6). > (f), (7). > (g)