10TH CBSE SCIENCE control coordination 50 MCQS QUIZ

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Control and Coordination

5 Theory-Based MCQ Tests • 10 Questions Each • 50 Questions

Instructions

• 5 tests, with 10 questions in each test.
• Questions are selected/reframed from the uploaded Control and Coordination material and focus on theory/concepts.
• Submit the test to see your score.
• Correct answers remain hidden until the password is entered.

Password is required to unlock answers after submission.

Test 1 — Nervous System & Neurons

10 questions • 1 mark each

1. What is the highest coordinating centre in the human body?

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

2. The junction between two neurons is called:

A. Cell junction B. Neuro-muscular junction C. Neural joint D. Synapse

3. The normal direction of an electrical impulse in a neuron is:

A. Axon → cell body → dendrite B. Dendrite → cell body → axon → axonal end C. Cell body → dendrite → axon D. Axonal end → axon → cell body

4. Which part of a neuron carries impulses away from the cell body?

A. Dendrite B. Axon C. Cyton only D. Synapse

5. In a synapse, chemical signals are released from the:

A. Dendritic end B. Cell body C. Axonal end D. Nucleus

6. The nervous system is formed of:

A. Brain only B. Spinal cord only C. Nerves only D. Brain, spinal cord and nerves

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

A. Sensory neurons B. Motor neurons C. Interneurons D. Receptor neurons

8. The gap between two neurons is called a:

A. Dendrite B. Synapse C. Cell body D. Myelin

9. Myelin sheath in the peripheral nervous system is produced by:

A. Neurons B. Nissl granules C. Schwann cells D. Receptors

10. The spinal cord originates in continuation with the:

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

Correct answers are locked.

Test 2 — Brain, Reflexes & Coordination

10 questions • 1 mark each

1. Which part of the brain controls thinking?

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

2. Which part of the brain controls posture and balance?

A. Cerebrum B. Cerebellum C. Medulla D. Hypothalamus

3. The medulla controls several:

A. Voluntary actions only B. Involuntary actions C. Growth movements in plants D. Hormonal secretions

4. Which part of the brain takes part in regulating respiration according to the source?

A. Cerebrum B. Pons C. Cerebellum D. Pituitary

5. The correct sequence of a reflex arc is:

A. Receptor → motor neuron → spinal cord → sensory neuron → muscle B. Receptor → sensory neuron → spinal cord → motor neuron → muscle C. Receptor → spinal cord → sensory neuron → motor neuron → muscle D. Muscle → sensory neuron → spinal cord → receptor

6. Reflex actions are primarily mediated through the:

A. Brain only B. Spinal cord C. Kidney D. Pituitary

7. A rapid response to a stimulus without conscious thinking is called:

A. Hormonal response B. Reflex action C. Growth movement D. Tropism

8. The contraction of the pupil in bright light is classified in the source as a:

A. Spinal reflex B. Cerebral reflex C. Voluntary action D. Growth response

9. All voluntary actions of the body are controlled by the:

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

10. The brain is protected by the cavity of the skull called the:

A. Meninges B. Cranium C. Piamater D. Synapse

Correct answers are locked.

Test 3 — Receptors & Plant Movements

10 questions • 1 mark each

1. A cell or group of cells sensitive to a particular stimulus is called a:

A. Effector B. Receptor C. Hormone D. Acceptor only

2. Gustatory receptors detect:

A. Smell B. Taste C. Light D. Sound

3. Gustatory receptors are mainly present in the:

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

4. Olfactory receptors are associated with detecting:

A. Taste B. Smell C. Pressure D. Light

5. A change in the environment to which an organism responds is called a:

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

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

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

7. The stimulus involved in thigmotropism is:

A. Touch B. Gravity C. Light D. Water

8. The stimulus involved in hydrotropism is:

A. Chemical substance B. Water C. Gravity D. Touch

9. The growth of a pollen tube towards an ovule is an example of:

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

10. Roots are generally:

A. Positively phototropic and negatively geotropic B. Positively geotropic and negatively phototropic C. Negatively hydrotropic and positively phototropic D. Negatively geotropic and positively phototropic

Correct answers are locked.

Test 4 — Plant Hormones & Tropisms

10 questions • 1 mark each

1. Which plant hormone mainly inhibits growth?

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

2. Which hormone is associated with cell elongation and phototropic growth in shoots?

A. Auxin B. Abscisic acid C. Insulin D. Thyroxine

3. The falling of mature leaves and fruits is associated in the source with:

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

4. Which plant hormone is identified as a plant hormone in the source?

A. Insulin B. Thyroxine C. Cytokinin D. Testosterone

5. The response of a plant to gravity is called:

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

6. Growth of roots in the direction of gravity is called:

A. Negative geotropism B. Positive geotropism C. Phototropism D. Thigmotropism

7. The stem generally exhibits:

A. Positive geotropism B. Negative geotropism C. No geotropic response D. Positive chemotropism

8. The response of a plant part to a chemical stimulus is called:

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

9. The response of a plant to light is called:

A. Hydrotropism B. Phototropism C. Geotropism D. Thigmotropism

10. The closing of leaves of a sensitive plant on touch is described in the source as a:

A. Growth movement only B. Non-directional movement C. Positive geotropism D. Chemotropic response

Correct answers are locked.

Test 5 — Endocrine System & Hormones

10 questions • 1 mark each

1. Which hormone is associated with male puberty?

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

2. Which hormone is associated with the development of female characteristics?

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

3. Iodine is necessary for synthesis of:

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

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

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

5. Which gland is also called the suprarenal gland?

A. Thyroid B. Adrenal C. Pituitary D. Hypothalamus

6. The adrenal glands are often called the:

A. Growth glands B. Glands of emergency C. Digestive glands D. Sensory glands

7. Insufficient secretion of which hormone can cause diabetes?

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

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

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

9. Which gland can act as both an endocrine and exocrine gland?

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

10. Which two systems control and regulate life processes according to the source?

A. Respiratory and digestive systems B. Nervous and endocrine systems C. Reproductive and respiratory systems D. Digestive and skeletal systems

Correct answers are locked.