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Q 1. Which gland is located right above the kidneys?
Pineal gland
Thymus gland
Parathyroid gland
Adrenal gland
Q 2. Which of the following is not a male hormone?
Thyroxin
Oestrogen
Testosterone
Insulin
Q 3. Cretinism is caused due to the deficiency of: 
Thyroxin
Growth hormone
Adrenaline
Insulin
Q 4. The plant hormone responsible for wilting of leaves:
Cytokinin
Abscisic acid
Auxin
Gibberellin
Q 5. Why are we advised to consume iodised salt?
Iodine is required for production of thyroxin hormone
Iodine helps in controlling blood pressure
Iodine detoxify the salts
Iodine is required by pituitary gland.
Q 6. Lower portion of brain that extends downwards into spinal cord is called:
Medulla
Pons
Cerebellum
olfactory lobes
Q 7. Which of the following response is not evoked by adrenaline?
Heart beats faster
Reduced blood supply to skin
Increased blood supply to digestive system
Increased rate of breathing
Q 8. Closing of the carnivorous Venus flytrap leaf when it captures prey is an example of:
Nastic movements
Thigmotropism
Geotropism
Chemotropism
Q 9. Which hormone regulates carbohydrate, protein and fat metabolism in the body?
Iodine
Thyroxin
Adrenaline
Growth hormone
Q 10. What is the function of olfactory receptors?
They detect smell
They detect taste
They release gastric juices
They detect light
Q 11. In a nerve impulse, the electrical impulse is caused by:
Atoms
Molecules
Ions
Compounds
Q 12. What is the fate of acetylcholine released in the synaptic cleft once the impulse has been transmitted to the next neuron?
It persists in the synaptic cleft.
It is ingested by the neuron by endocytosis.
It is degraded by the action of enzyme.
None of the above
Q 13. Point out the one which is not a reflex action.
Watering of mouth on seeing tasty food
Taking hand away from flame
Beating of heart
Sneezing
Q 14. Which part of the brain controls salivation?
Cerebrum
Cerebellum
Medulla
Pons
Q 15. Match the following- Column I Column II 1. Hormones i) Shoot 2. Seedling germination ii) growth of pollen tubes towards ovules 3. Chemotropic iii) Root 4. Positively geotropic iv) synthesized at places away from where they act 5. Positively phototropic v) growth
1 – iv; 2 – v; 3 – ii; 4 – iii; 5 – i
1 – iv; 2 – v; 3 – iii; 4 – ii; 5 – i
1 – v; 2 – iv; 3 – ii; 4 – iii; 5 – i
1- iv; 2 – iii; 3 – iv; 4 – ii; 5 – i
Q 16. Why are reflex arc connections between input and output nerve made at spinal cord?
Because making them in brain will decrease the time of response
Because brain is involved in complex thinking
Because spinal cord is the point where they first meet each other
Because brain does not respond fast enough
Q 17. Olfactory lobes are a part of:
Fore brain
Mid brain
Hind brain
Spinal cord
Q 18. Central canal of the spinal cord contains:
Pleural fluid
Cerebrospinal fluid
Interstitial fluid
Aqueous humour
Q 19. Hormones which help in growth of plant stem:
Ethylene and gibberellin
Auxin and gibberellin
Cytokinin and abscisic acid
Auxin and abscisic acid
Q 20. The stimulus of touch is conveyed in a sensitive plant by ______ means.
Electro-chemical
Electrical
Chemical
Specialized proteins
Q 21. In a reflex arc, the motor neuron passes the impulse to which member of the reflex arc?
Receptor
Spinal cord
Effector
Sensory neuron
Q 22. Name the endocrine gland located in the brain.
Pineal gland
Thymus gland
Parathyroid gland
Adrenal gland
Q 23. Gustatory receptors detect
Touch
Taste
Smell
Temperature
Q 24. Which of the following acts as a neurotransmitter in the synaptic cleft?
Acetyl CoA
Acetylene
Acetone
Acetylcholine
Q 25. Concentration of auxin will be more in
Shady side of shoot
Lighted side of shoot
Leaf
Shoot
Q 26. Voluntary muscle contractions are initiated in:
Brain
Spinal cord
Heart
None of these
Q 27. Mark the odd one out:
Auxin
Cytokinin
Gibberellins
Abscisic acid
Q 28. Which hormone is not secreted in the female body?
Thyroxin
Oestrogen
Testosterone
Insulin
Q 29. The part of a neuron where information is acquired is:
Axon
Cell body
Nucleus
Dendritic tip
Q 30. Respiration control centre is present in:
Medulla
Cerebellum
Pons
Spinal cord
Q 31. Which of the following is not a characteristic of a reflex action?
Enables body to give quick response to harmful situations
Minimises overloading of brain
Involves coordination of many nerve cells to enable quick response
The information input also reaches the brain
Q 32. Non-directional movement of plants in response to external stimuli is called:
Nastic Movement
Tropism
Ripening
Growth
Q 33. Name the hormone which is also termed as fight or flight- hormone.
Thyroxin
Adrenaline
Growth hormone
Insulin
Q 34. What is the reason behind the change in shape of plant cells in response to a stimulus?
Change in shape of specialised proteins 
Change in the amount of water in the cells
Chemical changes
Electrical impulses
Q 35. What is the other term used for tropic movements?
Directional growth movements
Growth independent movements
Nastic movements
Stimulus governed movements
Q 36. The largest cell in the body is:
Neuron
Muscle cell
RBC
WBC
Q 37. Which hormone is most likely to be present in greater concentration in areas of rapid cell division?
Auxin
Gibberellins
Cytokinins
Abscisic acid
Q 38. A chemical secreted by axon terminal for transmission of an impulse to the next neuron is called: 
Neurotransmitter
Acetylcholine
Glutamic acid
Noradrenaline
Q 39. Mark the odd one out:
Auxin
Adrenaline
Cytokinins
Gibberellins
Q 40. Diencephalon is present in:
Spinal cord
Mid brain
Fore brain
Hind brain

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