6. Control and Coordination

*नोट: यह सेक्शन रिवीजन के लिए है। अपना ज्ञान परखने के लिए ऊपर दिए गए क्विज़ में भाग लें।

1. Who is responsible for maintaining the balance (posture) of the body?
   A) Cerebrum  |  B) Cerebellum  |  C) Medulla  |  D) Pons
2. Who controls involuntary actions like blood pressure and salivation?
   A) Hypothalamus  |  B) Medulla  |  C) Spinal cord  |  D) Cerebrum
3. The folding of leaves in a 'Touch-me-not' plant is which type of movement?
   A) Growth related  |  B) Thigmonasty  |  C) Phototropism  |  D) None of these
4. Which is the main plant hormone that promotes growth?
   A) Abscisic acid  |  B) Auxin  |  C) Insulin  |  D) Adrenaline
5. The plant hormone that promotes cell division is:
   A) Auxin  |  B) Cytokinin  |  C) Gibberellin  |  D) Ethene
6. Which hormone is responsible for the wilting of leaves?
   A) Auxin  |  B) Abscisic Acid  |  C) Cytokinin  |  D) Gibberellin
7. Which disease is caused by a deficiency of iodine?
   A) Diabetes  |  B) Goitre  |  C) Anaemia  |  D) Scurvy
8. From where is the hormone Insulin secreted?
   A) Liver  |  B) Pancreas  |  C) Pituitary gland  |  D) Thyroid
9. Which hormone is called the 'Fight or Flight' hormone?
   A) Thyroxine  |  B) Adrenaline  |  C) Insulin  |  D) Estrogen
10. Which is the female sex hormone?
    A) Testosterone  |  B) Estrogen  |  C) Insulin  |  D) Thyroxine
11. What is essential for the synthesis of Thyroxine hormone?
    A) Iron  |  B) Iodine  |  C) Calcium  |  D) Magnesium
12. The Pituitary Gland is also known as the:
    A) Thyroid gland  |  B) Master Gland  |  C) Mixed gland  |  D) Exocrine gland
13. The movement of plants towards light is called:
    A) Hydrotropism  |  B) Phototropism  |  C) Geotropism  |  D) None of these
14. Growth Hormone is secreted by which gland?
    A) Pancreas  |  B) Pituitary  |  C) Adrenal  |  D) Thyroid
15. Which is the male sex hormone?
    A) Estrogen  |  B) Testosterone  |  C) Progesterone  |  D) Insulin
16. What are the specialized tips in our body that receive information?
    A) Cell body  |  B) Receptors  |  C) Dendrite  |  D) Axon
17. The part of the neuron through which information travels as an electrical impulse:
    A) Nucleus  |  B) Dendrite  |  C) Leg  |  D) Tail
18. The gap between two neurons is called a:
    A) Dendrite  |  B) Synapse  |  C) Axon  |  D) Impulse
19. Where is the information from a Reflex Arc processed?
    A) Brain  |  B) Spinal Cord  |  C) Eyes  |  D) Heart
20. Which is the main thinking part of the human brain?
    A) Mid-brain  |  B) Fore-brain  |  C) Hind-brain  |  D) Spinal cord
21. The nerve impulse travels from the dendrite towards the:
    A) Tail  |  B) Cell Body  |  C) Heart  |  D) Nowhere
22. At the synapse, electrical signals are converted into:
    A) Light energy  |  B) Chemical signals  |  C) Sound  |  D) None of these
23. Which part of the brain is responsible for memory?
    A) Cerebrum  |  B) Cerebellum  |  C) Pons  |  D) Medulla
24. Which part of the brain controls the heartbeat?
    A) Cerebrum  |  B) Medulla  |  C) Cerebellum  |  D) Skull
25. What is the main advantage of a Reflex Action?
    A) Helps in thinking  |  B) Rapid response to sudden dangers  |  C) Helps in sleeping  |  D) None of these
26. The downward growth of roots is which type of tropism?
    A) Phototropism  |  B) Positive Geotropism  |  C) Hydrotropism  |  D) None of these
27. Growth of a pollen tube towards the ovule is an example of:
    A) Phototropism  |  B) Chemotropism  |  C) Geotropism  |  D) None of these
28. Which hormone is found in high concentration in fruits and seeds?
    A) Abscisic acid  |  B) Cytokinin  |  C) Auxin  |  D) None of these
29. Patients of Diabetes are given injections of:
    A) Adrenaline  |  B) Insulin  |  C) Thyroxine  |  D) Growth hormone
30. Thyroxine hormone regulates the metabolism of ________ in the body:
    A) Blood pressure  |  B) Carbohydrates, proteins and fats  |  C) Bone growth  |  D) None of these
31. The twining of tendrils around a support is called:
    A) Phototropism  |  B) Thigmotropism  |  C) Hydrotropism  |  D) None of these
32. What is the function of the fluid found around the brain?
    A) Giving color  |  B) Shock absorber  |  C) Increasing weight  |  D) None of these
33. Where is the Adrenal gland located in the body?
    A) Brain  |  B) Above the Kidney  |  C) Throat  |  D) Stomach
34. What is the main function of the Hypothalamus?
    A) Thinking  |  B) Regulating hormone secretion from the pituitary  |  C) Walking  |  D) Listening
35. Which is the growth inhibitor hormone in plants?
    A) Auxin  |  B) Abscisic acid  |  C) Gibberellin  |  D) Cytokinin
36. Where is the center for involuntary actions like vomiting located?
    A) Fore-brain  |  B) Medulla  |  C) Cerebrum  |  D) None of these
37. The structural and functional unit of the nervous system is:
    A) Nephron  |  B) Neuron  |  C) Liver  |  D) Heart
38. Which hormone from the pituitary gland regulates bone growth?
    A) Insulin  |  B) Growth Hormone  |  C) Thyroxine  |  D) Adrenaline
39. Who controls involuntary actions?
    A) Pons and Medulla  |  B) Spinal cord  |  C) Skull  |  D) None of these
40. Which condition arises in children due to deficiency of growth hormone?
    A) Becoming tall  |  B) Dwarfism  |  C) Obesity  |  D) None of these
41. Which ion plays a vital role during the transmission of a nerve impulse?
    A) Calcium  |  B) Sodium  |  C) Magnesium  |  D) Iron
42. Which part of the brain is the center for hunger and thirst?
    A) Medulla  |  B) Hypothalamus  |  C) Cerebellum  |  D) Pons
43. What are the three membranes covering the brain called?
    A) Pleura  |  B) Meninges  |  C) Pericardium  |  D) Cuticle
44. How do Cytokinin and Abscisic acid act towards each other?
    A) Similarly  |  B) Antagonistically  |  C) Complementary  |  D) None of these
45. Which nerve is between the receptor and the effector in a reflex arc?
    A) Sensory nerve  |  B) Motor nerve  |  C) Both Sensory and Motor  |  D) None of these
46. Due to which hormone does the stem bend towards light?
    A) Cytokinin  |  B) Auxin  |  C) Ethene  |  D) ABA
47. What is included in the Peripheral Nervous System (PNS)?
    A) Brain  |  B) Cranial and Spinal nerves  |  C) Only spinal cord  |  D) None of these
48. Which system becomes active to increase heartbeat in an emergency?
    A) Parasympathetic  |  B) Sympathetic nervous system  |  C) Digestive system  |  D) None of these
49. What is the main function of 'Ethylene' in plants?
    A) Root growth  |  B) Fruit ripening  |  C) Increasing height  |  D) None of these
50. Why does the thyroid gland increase in size in Goitre?
    A) Due to lack of calcium  |  B) Due to lack of iodine and attempt to produce more hormone  |  C) Eating too much  |  D) None of these
51. What is the difference between Cerebrum and Cerebellum?
    A) No difference  |  B) Cerebrum is for voluntary actions, Cerebellum for balance  |  C) Both are same  |  D) None of these
52. What is nervous tissue made of?
    A) Bones  |  B) Network of neurons and nerve cells  |  C) Muscles  |  D) None of these
53. Plant hormones are also called:
    A) Vitamins  |  B) Phytohormones  |  C) Enzymes  |  D) Minerals
54. Which hormone regulates the production of sperm?
    A) Estrogen  |  B) Testosterone  |  C) Insulin  |  D) Thyroxine
55. The gland that is both endocrine and exocrine is:
    A) Liver  |  B) Pancreas  |  C) Pituitary  |  D) Adrenal
56. What is the link between the nervous system and the endocrine system?
    A) Hypothalamus  |  B) Pituitary gland  |  C) Both A and B  |  D) None of these
57. In which part of the brain is the center for vision and hearing?
    A) Fore-brain  |  B) Mid-brain  |  C) Hind-brain  |  D) None of these
58. A plant hormone found in gaseous form is:
    A) Auxin  |  B) Ethylene  |  C) GA  |  D) ABA
59. What is the approximate weight of the human brain?
    A) 500 grams  |  B) 1.3 - 1.4 Kilograms  |  C) 5 Kilograms  |  D) 100 grams
60. What will be affected if the Cerebellum is damaged?
    A) Memory  |  B) Body posture and balance  |  C) Vision  |  D) Digestion