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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