VARDAAN LEARNING INSTITUTE

Q1-10. Fill in the blanks:

1. The structural and functional unit of the nervous system is __________.
2. The gap between two neurons is called __________.
3. The largest part of the human brain is __________.
4. A sudden involuntary reaction to a stimulus is called __________.
5. Hormones are secreted by __________ glands.
6. The chemical substances which coordinate the activities of living organisms are called __________.
7. __________ hormone helps in the growth of the stem.
8. __________ hormone causes wilting of leaves.
9. Deficiency of Iodine causes __________.
10. Deficiency of Insulin causes __________.

Q11-20. Select correct word:

11. Bending of shoot towards light is called __________ (Phototropism/Geotropism).
12. Downward growth of roots is __________ (Positive/Negative) geotropism.
13. Posture and balance of the body are controlled by __________ (Cerebrum/Cerebellum).
14. Involuntary actions like salivation are controlled by __________ (Medulla/Pons).
15. Growth Hormone is secreted by the __________ (Pituitary/Thyroid) gland.
16. Testosterone is the __________ (Male/Female) sex hormone.
17. Estrogen is the __________ (Male/Female) sex hormone.
18. The brain is protected by a bony box called __________ (Cranium/Vertebra).
19. Spinal cord is protected by the __________ (Vertebral Column/Rib Cage).
20. Dendrites __________ (Acquire/Transmit) the information.

Q21-30. State True or False:

21. Electrical impulses can flow in both directions in a neuron. __________ (False).
22. Reflex arcs are formed in the brain. __________ (False, Spinal Cord).
23. Auxin promotes cell elongation. __________
24. Adrenaline is known as the emergency hormone. __________
25. Pancreas is a mixed gland (both Exocrine and Endocrine). __________
26. Brain is the center for reflex actions. __________ (False).
27. Cytokinins promote cell division. __________
28. Insulin increases blood sugar level. __________ (False).
29. Plants have a nervous system. __________ (False).
30. Mimosa pudica shows thigmonasty (response to touch). __________

Q31-40. Answer in one word:

31. Name the stress hormone in plants. __________ (Abscisic Acid).
32. Name the flight or fight hormone. __________ (Adrenaline).
33. Name the master gland of the body. __________ (Pituitary).
34. Which hormone regulates metabolism of carbohydrates, proteins, and fats? __________ (Thyroxin).
35. Which part of the brain is responsible for precision of voluntary actions? __________ (Cerebellum).
36. What connects the brain to the spinal cord? __________ (Medulla Oblongata).
37. Name the fluid that protects the brain from shock. __________ (CSF).
38. Name the longer process of the neuron. __________ (Axon).
39. Name a plant hormone that promotes fruit growth. __________ (Gibberellin).
40. Name the disease caused by deficiency of Growth Hormone. __________ (Dwarfism).

Q41-50. Match the Hormone/Term with its Source/Function:

Write answers as: 41-__, 42-__, 43-__, ...