CBSE 10TH Control and Coordination – 50 MCQS QUIZ Tests

Control and Coordination – MCQ Tests

CBSE Class 10 Science | 5 Tests × 10 Questions = 50 MCQs

Test 1 – 10 Questions

1. In a nerve cell, where is an electrical impulse converted into a chemical signal?

A) Axon B) Dendrites C) Axonal end D) Cell body

Correct Answer: C) Axonal end

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2. The part of the body in which gustatory receptors are present is the:

A) Inner ear B) Skin C) Tongue D) Inner lining of nose

Correct Answer: C) Tongue

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3. The highest coordinating centre in the human body is the:

A) Spinal cord B) Heart C) Brain D) Kidney

Correct Answer: C) Brain

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4. Iodine is necessary for the synthesis of which hormone?

A) Adrenaline B) Auxin C) Thyroxine D) Insulin

Correct Answer: C) Thyroxine

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5. The movement of a shoot towards light is called:

A) Geotropism B) Hydrotropism C) Chemotropism D) Phototropism

Correct Answer: D) Phototropism

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6. The endocrine gland whose malfunctioning can cause diabetes is the:

A) Pituitary B) Pineal C) Parathyroid D) Pancreas

Correct Answer: D) Pancreas

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7. The junction between two neurons is called a:

A) Cell junction B) Neuromuscular junction C) Neural joint D) Synapse

Correct Answer: D) Synapse

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8. The hormone associated with male puberty is:

A) Oestrogen B) Adrenaline C) Testosterone D) Progesterone

Correct Answer: C) Testosterone

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9. The stimulus in thigmotropism is:

A) Touch B) Gravity C) Light D) Chemical

Correct Answer: A) Touch

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10. The plant part that exhibits negative geotropism is the:

A) Root B) Stem C) Branch D) Leaves

Correct Answer: B) Stem

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Test 2 – 10 Questions

1. The main function of abscisic acid in plants is to:

A) Increase cell length B) Promote cell division C) Inhibit growth D) Promote stem growth

Correct Answer: C) Inhibit growth

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2. In a synapse, chemical signal is transmitted from:

A) Axon to cell body of the same neuron B) Cell body to axon end of the same neuron C) Dendrite end of one neuron to axon end of adjacent neuron D) Axon end of one neuron to dendrite end of adjacent neuron

Correct Answer: D) Axon end of one neuron to dendrite end of adjacent neuron

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3. Which gland is also called the suprarenal gland?

A) Thyroid gland B) Adrenal gland C) Pituitary gland D) Hypothalamus

Correct Answer: B) Adrenal gland

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4. Which statement is NOT true about thyroxin?

A) Iron is essential for its synthesis B) It regulates carbohydrate, protein and fat metabolism C) Thyroid gland requires iodine to synthesise it D) It is also called thyroid hormone

Correct Answer: A) Iron is essential for its synthesis

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5. Fall of mature leaves and fruits is triggered by:

A) Auxin B) Cytokinin C) Gibberellin D) Abscisic acid

Correct Answer: D) Abscisic acid

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6. All voluntary actions of our body are controlled by the:

A) Cerebrum B) Cerebellum C) Pons D) Medulla

Correct Answer: A) Cerebrum

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7. Reflex actions are mediated through the:

A) Brain B) Effectors C) Spinal cord D) Receptors

Correct Answer: C) Spinal cord

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8. The amount of blood supplied to the brain per minute is given in the source as:

A) 450 ml B) 50 ml C) 750 ml D) 1,000 ml

Correct Answer: C) 750 ml

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9. Which of the following is not an involuntary action?

A) Vomiting B) Chewing C) Heart beat D) Salivation

Correct Answer: B) Chewing

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10. Deficiency of which hormone causes diabetes?

A) Insulin B) Thyroxine C) Relaxin D) Oestrogen

Correct Answer: A) Insulin

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Test 3 – 10 Questions

1. Which endocrine gland does not occur as a pair in the human body?

A) Adrenal B) Pituitary C) Testis D) Ovary

Correct Answer: B) Pituitary

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2. The nervous and endocrine systems together control and regulate:

A) Only reproduction B) Life processes C) Only digestion D) Only respiration

Correct Answer: B) Life processes

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3. Electrical impulse travels in a neuron in which sequence?

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

Correct Answer: C) Dendrite → cell body → axon → axonal end

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4. The neurons that carry impulses from the spinal cord to effectors are called:

A) Sensory neurons B) Motor neurons C) Interneurons D) Spinal neurons

Correct Answer: B) Motor neurons

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5. Which sequence correctly represents a reflex arc?

A) Sensory organ → brain → effector B) Effector → spinal cord → sensory organ C) Sensory organ → spinal cord → effector organ D) Spinal cord → sensory organ → effector

Correct Answer: C) Sensory organ → spinal cord → effector organ

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6. The longest fibre on the cell body of a neuron is called the:

A) Sheath B) Cytoplasm C) Axon D) Dendrites

Correct Answer: C) Axon

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7. The plant hormone that inhibits growth is:

A) Abscisic acid B) Ethene C) Ascorbic acid D) Cytokinin

Correct Answer: A) Abscisic acid

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8. Which of the following are often called glands of emergency?

A) Thyroid B) Pituitary C) Adrenal D) Pancreas

Correct Answer: C) Adrenal

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9. The main function of the cerebrum mentioned in the source is:

A) Thinking B) Hearing C) Memory D) Balancing

Correct Answer: A) Thinking

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10. Which hormone is responsible for development of female characteristics?

A) Adrenaline B) Oestrogen C) Thyroxine D) Testosterone

Correct Answer: B) Oestrogen

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Test 4 – 10 Questions

1. Roots of plants are:

A) Positively geotropic B) Negatively geotropic C) Positively phototropic D) None of these

Correct Answer: A) Positively geotropic

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2. Breathing is controlled by which part of the brain?

A) Cerebrum B) Cerebellum C) Hypothalamus D) Medulla oblongata

Correct Answer: D) Medulla oblongata

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3. To which directional stimulus do roots not respond according to the source?

A) Moisture B) Candle light C) Touch D) Gravity

Correct Answer: C) Touch

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4. How many pairs of cranial nerves are present in humans?

A) 12 B) 21 C) 31 D) 41

Correct Answer: A) 12

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5. Which of the following is a plant hormone?

A) Insulin B) Thyroxin C) Oestrogen D) Cytokinin

Correct Answer: D) Cytokinin

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6. Growth of a pollen tube towards an ovule is an example of:

A) Geotropism B) Hydrotropism C) Thigmotropism D) Chemotropism

Correct Answer: D) Chemotropism

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7. Phototropism is movement of a plant part in response to:

A) Chemical B) Touch C) Gravity D) Light

Correct Answer: D) Light

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8. The gustatory receptors of our body are found in the:

A) Ear B) Nose C) Tongue D) Skin

Correct Answer: C) Tongue

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9. The positive response of plants towards gravity is called:

A) Phototropism B) Geotropism C) Hydrotropism D) Chemotropism

Correct Answer: B) Geotropism

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10. Which hormone triggers the fall of mature leaves and fruits?

A) Auxin B) Gibberellin C) Abscisic acid D) Cytokinin

Correct Answer: C) Abscisic acid

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Test 5 – 10 Questions

1. The bending of a plant stem towards a source of light is caused by:

A) Abscisic acid B) Auxin C) Gibberellins D) Cytokinin

Correct Answer: B) Auxin

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2. The hormone necessary for sperm production and associated with male fertility is:

A) Oestrogen B) Testosterone C) Insulin D) Growth hormone

Correct Answer: B) Testosterone

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3. Water acts as the stimulus in:

A) Phototropism B) Hydrotropism C) Chemotropism D) Thigmotropism

Correct Answer: B) Hydrotropism

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4. Any change in the environment to which an organism responds is called a:

A) Stimulus B) Coordination C) Response D) Hormone

Correct Answer: A) Stimulus

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5. Ageing in human beings is associated in the source with disappearance of the:

A) Adrenal gland B) Pituitary gland C) Thyroid gland D) Thymus gland

Correct Answer: D) Thymus gland

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6. Which of the following cannot be considered a receptor?

A) Ear B) Nose C) Muscle D) Eye

Correct Answer: C) Muscle

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7. The involuntary actions in the body are controlled by the:

A) Medulla in forebrain B) Medulla in hindbrain C) Medulla in spinal cord D) Medulla in midbrain

Correct Answer: B) Medulla in hindbrain

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8. How many pairs of spinal nerves are present in humans?

A) 12 B) 21 C) 31 D) 41

Correct Answer: C) 31

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9. The brain is lodged inside the cavity of the skull known as the:

A) Piamater B) Duramater C) Cranium D) Meninges

Correct Answer: C) Cranium

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10. Posture and balance of the body are controlled by the:

A) Cerebrum B) Cerebellum C) Medulla D) Pons

Correct Answer: B) Cerebellum

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