Hello Students! 👋
Welcome back to our channel! On this page, we're diving deep into one of the most crucial chapters for your Class 10 Science board exams - Control and Coordination.
We know that mastering the Multiple Choice Questions (MCQs) is key to scoring high, and that's exactly what this session is all about. We have compiled a list of the most important and frequently asked MCQs from previous years' question papers. 🧠🌿
Whether you're looking for a last-minute revision or want to strengthen your understanding of the chapter, this page can be your ultimate guide. learn till the end to make sure you don't miss out on any important questions that could appear in your exam
Drop your doubts and scores in the comments below! We'd love to hear from you.
Happy Learning! 😊
Here are 50 of the best objective questions and answers from the chapter "Control and Coordination," based on previous CBSE Class 10 board examinations.
1. Which plant hormone promotes dormancy in seeds and buds?
a) Auxin
b) Gibberellin
c) Cytokinin
d) Abscisic acid
Answer: d) Abscisic acid
2. The gap between two neurons is called a:
a) Dendrite
b) Synapse
c) Axon
d) Impulse
Answer: b) Synapse
3. The brain is responsible for:
a) Thinking
b) Regulating the heart beat
c) Balancing the body
d) All of the above
Answer: d) All of the above
4. Which of the following is a plant hormone?
a) Insulin
b) Thyroid
c) Oestrogen
d) Cytokinin
Answer: d) Cytokinin
5. The movement of a shoot towards light is:
a) Geotropism
b) Hydrotropism
c) Chemotropism
d) Phototropism
Answer: d) Phototropism
6. In a neuron, conversion of electrical signal to a chemical signal occurs at/in:
a) Cell body
b) Axonal end
c) Dendritic end
d) Axonend
Answer: b) Axonal end
7. Which part of the brain maintains posture and equilibrium of the body?
a) Cerebrum
b) Cerebellum
c) Medulla
d) Pons
Answer: b) Cerebellum
8. Which hormone regulates blood sugar levels?
a) Glucagon
b) Insulin
c) Thyroxin
d) Both a and b
Answer: d) Both a and b
9. The growth of pollen tubes towards ovules is due to:
a) Hydrotropism
b) Chemotropism
c) Geotropism
d) Phototropism
Answer: b) Chemotropism
10. Iodine is necessary for the synthesis of which hormone?
a) Adrenaline
b) Thyroxin
c) Auxin
d) Insulin
11. Choose the incorrect statement about insulin.
a) It is produced from the pancreas.
b) It regulates the growth and development of the body.
c) It regulates blood sugar level.
d) Insufficient secretion of insulin will cause diabetes.
12. The structural and functional unit of the nervous system is:
a) Nephron
b) Neuron
c) Alveoli
d) Cyton
13. Which part of the peripheral nervous system controls the involuntary actions?
a) Somatic nervous system
b) Autonomic nervous system
c) Central nervous system
d) Cranial nerves
14. The hormone which increases the fertility in males is called:
a) Oestrogen
b) Testosterone
c) Insulin
d) Growth hormone
15. The main function of abscisic acid in plants is to:
a) Promote cell division
b) Inhibit growth
c) Promote stem elongation
d) Promote flowering
16. The shape of guard cells changes due to a change in the:
a) Protein composition of cells
b) Temperature of cells
c) Amount of water in cells
d) Position of nucleus in the cells
17. The growth of tendrils in pea plants is due to:
a) Effect of light
b) Effect of gravity
c) Rapid cell divisions in tendrillar cells that are away from the support
d) Rapid cell divisions in tendrillar cells in contact with the support
18. A doctor advised a person to take an injection of insulin because:
a) His blood pressure was low
b) His heart was beating slowly
c) He was suffering from goitre
d) His sugar level in blood was high
19. The part of the brain that controls voluntary actions such as walking and talking is:
a) Cerebellum
b) Medulla
c) Cerebrum
d) Hypothalamus
20. The "master gland" of the body is:
a) Thyroid gland
b) Adrenal gland
c) Pituitary gland
d) Pancreas
21. Reflex actions are mediated by:
a) Brain
b) Spinal cord
c) Cerebellum
d) Nerves
22. Dwarfism results due to deficiency of which hormone?
a) Thyroxin
b) Adrenaline
c) Growth hormone
d) Testosterone
23. The function of the iris in the human eye is to:
a) Focus light on the retina
b) Control the amount of light entering the eye
c) Convert light into neural signals
d) Change the shape of the lens
24. What is the correct sequence of the components of a reflex arc?
a) Receptors → Muscles → Sensory neuron → Motor neuron → Spinal Cord
b) Receptors → Sensory neuron → Spinal Cord → Motor neuron → Muscle
c) Receptors → Motor neuron → Spinal Cord → Sensory neuron → Muscle
d) Receptors → Spinal cord → Sensory neuron → Motor neuron → Muscle
25. Which glands secrete adrenaline?
a) Pituitary
b) Pancreas
c) Adrenal
d) Thyroid
26. The part of the neuron where information is acquired is:
a) Dendrite
b) Axon
c) Cell body
d) Nerve ending
27. The plant hormone responsible for the ripening of fruits is:
a) Auxin
b) Ethylene
c) Gibberellin
d) Cytokinin
28. The 'fight or flight' hormone is:
a) Insulin
b) Adrenaline
c) Thyroxin
d) Oestrogen
29. Which of the following acts as both an endocrine and exocrine gland?
a) Pancreas
b) Thyroid
c) Adrenal
d) Liver
30. The brain is protected by a fluid-filled balloon which acts as a shock absorber. This fluid is called:
a) Plasma
b) Lymph
c) Cerebrospinal fluid
d) Aqueous humour
31. The nerves that carry messages from the brain and spinal cord to other parts of the body are:
a) Sensory nerves
b) Motor nerves
c) Relay nerves
d) Cranial nerves
32. The bending of the stem of a plant towards a light source is caused by the action of:
a) Gibberellin
b) Cytokinin
c) Auxin
d) Abscisic acid
33. Goitre is caused by the deficiency of:
a) Iodine
b) Vitamin C
c) Vitamin D
d) Iron
34. Breathing and heartbeat are controlled by which part of the brain?
a) Cerebrum
b) Cerebellum
c) Medulla oblongata
d) Hypothalamus
35. Which of the following is not an involuntary action?
a) Vomiting
b) Salivation
c) Chewing
d) Heartbeat
36. A change in the environment that causes an organism to react is called:
a) Response
b) Stimulus
c) Impulse
d) Hormone
37. The protective covering of the brain is the:
a) Skull
b) Vertebral column
c) Meninges
d) Rib cage
38. The receptors for taste are called:
a) Olfactory receptors
b) Gustatory receptors
c) Photoreceptors
d) Phonoreceptors
39. The closing of leaves of the 'touch-me-not' plant is an example of:
a) Phototropism
b) Thigmonasty
c) Geotropism
d) Chemotropism
40. The longest cell in the human body is:
a) Muscle cell
b) Nerve cell
c) Bone cell
d) Gland cell
41. Thinking part of the brain is:
a) Diencephalon
b) Fore-brain
c) Mid-brain
d) Hind-brain
42. The part of the brain which controls the posture, balance and equilibrium is:
a) Cerebellum
b) Cerebrum
c) Pons
d) Medulla
43. Which hormone is released by the testes on the onset of puberty?
a) Oestrogen
b) Testosterone
c) Progesterone
d) Relaxin
44. Which of the following is not a ductless gland?
a) Adrenal
b) Pituitary
c) Salivary gland
d) Thyroid
45. Electrical impulse travels in a neuron from:
a) Dendrite → axon → axonal end → cell body
b) Cell body → dendrite → axon → axonal end
c) Dendrite → cell body → axon → axonal end
d) Axonal end → axon → cell body → dendrite
46. The growth of root away from light is an example of:
a) Positive phototropism
b) Negative phototropism
c) Positive geotropism
d) Negative geotropism
47. The sensory neurons of a reflex arc carry information from the receptor cells to the:
a) Spinal cord
b) Brain
c) Effector muscles
d) Motor neurons
48. The substance that triggers the fall of mature leaves and fruits from plants is:
a) Auxin
b) Gibberellin
c) Abscisic acid
d) Cytokinin
49. Which part of the central nervous system is the seat of intelligence and memory?
a) Cerebellum
b) Medulla
c) Spinal Cord
d) Cerebrum
50. Hormones are transported to all parts of the body through the:
a) Nerves
b) Blood
c) Lymph
d) Muscles
