MCQ Questions for Class 10 Science Chapter 7 Control and Coordination with Answers
Solving the Control and Coordination Multiple Choice Questions of Class 10 Science Chapter 7 MCQ can be of extreme help as you will be aware of all the concepts. These MCQ Questions on Control and Coordination Class 10 with answers pave for a quick revision of the Chapter thereby helping you to enhance subject knowledge. Have a glance at the MCQ of Chapter 7 Science Class 10 and cross-check your answers during preparation.
Question 1.
Assertion: Brain is a delicate organ which is protected from injury.
Reason: The bony box protects the brain from any shock.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
(e) Both A and R are false.
Answer
(c) A is true but R is false.
Question 2.
Assertion: Reflex Arc works faster than thinking process of brain.
Reason: Reflex Arc works in case of those animals who donot have thinking process.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
(e) Both A and R are false.
Answer
(c) A is true but R is false.
Question 3.
Which of the following acts as both endocrine and exocrine glands?
(a) Adrenal
(b) Pituitary
(c) Ovaries
(d) Pancreas
Answer
(d) Pancreas
Question 4.
Which of the following is not associated with growth of plant?
(a) Auxin
(b) Gibberellins
(c) Cytokinins
(d) Abscisic acid
Answer
(d) Abscisic acid
Question 5.
Which hormone regulates the ionic balance in the body?
(a) Glucagon
(b) Thyroxine
(c) Testosterone
(d) Vasopressin
Answer
(d) Vasopressin
Question 6.
The main effect of cytokinin in plants is to
(a) improve the quality of fruits
(b) prevent the growth of lateral buds
(c) regulate opening and closing of stomata
(d) stimulate cell division
Answer
(d) stimulate cell division
Question 7.
Reflex actions are mediated through
(a) brain
(b) effectors
(c) spinal cord
(d) receptors
Answer
(c) spinal cord
Question 8.
How many pairs of cranial nerves are present in man?
(a) 12
(b) 21
(c) 31
(d) 41
Answer
(a) 12
Question 9.
Any change in the environment to which an organism responds is called
(a) stimulus
(b) coordination
(c) response
(d) hormone
Answer
(a) stimulus
Question 10.
The highest coordinating centre in the human body is
(a) spinal cord
(b) heart
(c) brain
(d) kidney
Answer
(c) brain
Question 11.
Which of the following is a plant hormone?
(a) Insulin
(b) Thyroxin
(c) Oestrogen
(d) Cytokinins
Answer
(d) Cytokinins
Question 12.
Which part of nervous system controls the reflex activities of the body?
(a) Brain
(b) Spinal cord
(c) Cerebrum
(d) Cerebellum
Answer
(b) Spinal cord
Question 13.
A part of the body which responds to the in-structions sent from nervous system is called
(a) receptor
(b) effector
(c) nerves
(d) muscles
Answer
(b) effector
Question 14.
The substance that result into the fall of mature leave and fruits from plants is due to :
(a) auxin
(b) gibberllin
(c) ABA
(d) cytokinin
Answer
(b) gibberllin
Question 15.
Which nerves transmit impulses from the cen¬tral nervous system towards muscle cells?
(a) Sensory nerves
(b) Motor nerves
(c) Relay nerves
(d) Cranial nerves
Answer
(b) Motor nerves
Question 16.
Breathing is controlled by which part of the brain?
(a) Cerebrum
(b) Cerebellum
(c) Hypothalamus
(d) Medulla oblongata
Answer
(d) Medulla oblongata
Question 17.
Which of the following acts as both endocrine and exocrine gland?
(a) Pancreas
(b) Thyroid
(c) Adrenal
(d) Liver
Answer
(a) Pancreas
Question 18.
The main function of abscisic acid in plants is
(a) to promote cell division.
(b) to inhibit growth.
(c) to promote growth of stem.
(d) to increase the length of cells.
Answer
(b) to inhibit growth.
Question 19.
Movement of sunflower in accordance with the path of Sun is due to
(a) Chemotropism
(b) Geotropism
(c) Phototropism
(d) Hydrotropism
Answer
(c) Phototropism
Question 20.
Response of plant roots towards water is called:
(a) Chemotropism
(b) Phototropism
(c) Hydrotropism
(d) Geotropism
Answer
(c) Hydrotropism
Question 21.
Which plant hormone promotes dormancy in seeds and buds?
(a) Auxin
(b) Gibberellin
(c) Cytokinin
(d) Abscisic acid
Answer
(d) Abscisic acid
Question 22.
Roots of plants are:
(a) positively geotropic
(b) negatively geotropic
(c) positively phototropic
(d) None of these
Answer
(a) positively geotropic
Question 23.
Assertion: Plants do have a nervous system for control and coordination.
Reason: Plants use electro chemical means to convey information from cell to cell.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
(e) Both A and R are false.
Answer
(d) A is false but R is true.
Question 24.
Assertion: On attaining puberty, breast size increases and reproductive organs develop in females.
Reason: Ovaries release hormone proges-terone in female.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
(e) Both A and R are false.
Answer
(b) Both A and R are true but R is not the correct explanation of A.
Question 25.
Assertion: Impulse travels from dendrite to cell body and then along the axon to its end.
Reason: Information acquired at the end of the dendrite tip of a nerve cell sets of an electric impulse.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
(e) Both A and R are false.
Answer
(a) Both A and R are true and R is the correct explanation of A.
Question 26.
Which of the following is not a ductless gland?
(a) Adrenal
(b) Liver
(c) Thyroid
(d) Pituitary
Answer
(b) Liver
Question 27.
Which endocrine gland is also known as ‘master gland’?
(a) Pancreas
(b) Adrenal
(c) Pituitary
(d) Hypothalamus
Answer
(c) Pituitary
Question 28.
Ageing in human beings is caused by disappearance of which of the following glands?
(a) Adrenal
(b) Pituitary
(c) Thyroid
(d) Thymus
Answer
(d) Thymus
Question 29.
Which statement is incorrect about auxins?
(a) They promote the growth of root
(b) They promote the growth of shoot
(c) They influence the formation of flower and ripening of fruit
(d) They inhibit the growth of root
Answer
(a) They promote the growth of root
Question 30.
The hormone that is used to keep flowers fresh is
(a) cytokinin
(b) gibberellins
(c) auxin
(d) abscisic acid
Answer
(a) cytokinin
Question 31.
Which of the following tissues provide control and coordination in animals?
(a) Nervous and Skeletal
(b) Muscular and Skeletal
(c) Muscular and Transport
(d) Nervous and Muscular
Answer
(d) Nervous and Muscular
Question 32.
The longest fibre on the cell body of a neuron is called
(a) sheath
(b) cytoplasm
(c) axon
(d) dendrites
Answer
(c) axon
Question 33.
Posture and balance of the body is controlled by
(a) Pons
(b) Medulla oblongata
(c) Cerebellum
(d) Cerebrum
Answer
(c) Cerebellum
Question 34.
Select the mismatched pair
(a) Adrenaline – Pituitary gland
(b) Testosterone – Testes
(c) Estrogen – Ovary
(d) Thyroxin – Thyroid gland.
Answer
(a) Adrenaline – Pituitary gland
Question 35.
Identify which of the following statements about thyroxin is incorrect?
(a) Thyroid gland requires iodine to synthesize thyroxin.
(b) Thyroxin is also called thyroid hormone.
(c) It regulates protein, carbohydrates and fat metabolism in the body.
(d) Iron is essential for the synthesis of thyroxin.
Answer
(d) Iron is essential for the synthesis of thyroxin.
Question 36.
Visceral nervous system controls and integrates the function of –
(a) Urinary bladder
(b) Blood vessels
(c) Heart
(d) All of the above
Answer
(d) All of the above
Question 37.
The neurons that carry nerve impulse from spinal cord to effectors are called:
(a) Sensory neurons
(b) motor neurons
(c) Inteneurons
(d) spinal neurons
Answer
(b) motor neurons.
Question 38.
Main function of cerebrum is
(a) thinking
(b) hearing
(c) memory
(d) balancing
Answer
(a) thinking
Question 39.
Which of the following is a plant hormone?
(a) Insulin
(b) Thyroxin
(c) Oestrogen
(d) Cytokinin
Answer
(d) Cytokinin
Question 40.
Which gland secretes the growth hormone?
(a) Pituitary gland
(b) Thyroid
(c) Hypothalamus
(d) Adrenal
Answer
(a) Pituitary gland
Question 41.
Junctions of two neurons in called.
(a) Synapse
(b) Synapsis
(c) Joint
(d) Junction
Answer
(a) Synapse
Question 42.
Fall of mature leaves and fruits from plants is triggered by which of the following substance?
(a) Auxin
(b) Cytokinin
(c) Gibberellin
(d) Abscisic acid
Answer
(d) Abscisic acid
Question 43.
When a person is suffering from severe cold, he or she cannot –
(a) Differentiate the taste of an apple form that of an ice – cream.
(b) Differentiate red light from green light.
(c) Differentiate a hot object form a cold object.
(d) Differentiate the smell of a perfume form that of an agarbatti
Answer
(d) Differentiate the smell of a perfume form that of an agarbatti.
Question 44.
Which plant hormone promotes cell division?
(a) Auxin
(b) Gibberellin
(c) Cytokinin
(d) Abscisic acid
Answer
(c) Cytokinin
Question 45.
The brain is lodged inside the cavity of skull known as :
(a) Piamater
(b) Duramater
(c) Cranium
(d) Meninges
Answer
(c) Cranium
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