Practice Worksheets for Class 8 Science: Nervous System
Access printable practice worksheets for Nervous System designed to align with the 2026-27 academic syllabus for Class 8 Science. These structured exercises help students evaluate their conceptual understanding and improve exam readiness.
Practice Nervous System Worksheets for Class 8 Science
View or download the dedicated Nervous System practice resource below. Engaging with these objective and subjective questions daily ensures continuous academic progress and mastery of the 2026-27 curriculum.
A. Check Point and Keywords
1. True or False: 1. The nervous system coordinates voluntary, involuntary and reflex actions. 2. A neuron is the basic unit of the nervous system. 3. Motor neurons carry impulses from the brain and the spinal cord to organs. 4. The cerebrum is the smallest part of the brain. 5. A reflex does not involve the brain.
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Answer: 1. True; 2. True; 3. True; 4. False (it is the largest); 5. True (it is controlled by the spinal cord).
Teacher's Note: Use the key term in your answer.
2. Define: neuron, response, reflex, stimulus.
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Answer: Neuron: a nerve cell. Response: the reaction of the body to a stimulus. Reflex: a sudden, automatic response to a stimulus without thinking. Stimulus: a change in the surroundings that makes the body react, such as heat.
Teacher's Note: Give an example if the question allows.
B. Exercise
(i) Vomiting after eating something wrong is ____ coordination. (ii) The outer part of the cerebrum has (iii) The part of a neuron with the nucleus. (iv) The pairs of spinal nerves. (v) What surrounds the axon.
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Answer: (i) (a) Nervous; (ii) (c) Both ridges and grooves; (iii) (a) Cyton; (iv) (b) 31; (v) (d) Myelin sheath.
Teacher's Note: Write a short, clear answer.
4. Fill in the blanks: 1. The main part of ____ is the cyton. 2. The brain is protected by three coverings called ____. 3. ____ is the largest part of the brain. 4. ____ carries impulses from the brain to organs. 5. ____ carries impulses from body parts to the brain.
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Answer: 1. a neuron; 2. meninges; 3. The cerebrum; 4. A motor (efferent) neuron; 5. A sensory (afferent) neuron.
Teacher's Note: Remember this for your exam.
5. Complete the chart of a reflex action.
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Answer: Stimulus (touching a hot object), receptor (skin), sensory neuron, spinal cord (relay neuron), motor neuron, effector (muscle), response (hand pulled back).
Teacher's Note: The brain is informed after the action.
C. Short Answers
1. The structural and functional unit of the nervous system? 2. Expand CNS. 3. The largest part of the brain? 4. Define synapse and coordination. 5. Define stimulus with an example.
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Answer: 1. The neuron. 2. Central Nervous System. 3. The cerebrum. 4. Synapse: the gap between two neurons, across which the impulse passes. Coordination: the working of the organs together in a proper manner. 5. A stimulus is a change that makes the body react, such as a pin prick or a bright light.
Teacher's Note: Use the key term in your answer.
1. Define neuron. Name its kinds. 2. Define stimulus, effector organ and receptor organ. 3. Autonomic nervous system and its function. 4. Functions of the nervous system.
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Answer: 1. A neuron is the nerve cell that receives and carries messages. Kinds: sensory, motor and association (relay) neurons. 2. A receptor organ detects a stimulus (eye, skin); an effector organ responds to it (muscle, gland). 3. The autonomic nervous system controls involuntary actions such as heartbeat, digestion and breathing. 4. It receives information, processes it, makes decisions, controls voluntary and involuntary actions and keeps the body balanced.
Teacher's Note: Give an example if the question allows.
D. Long Answers
1. What is coordination? Explain.
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Answer: Coordination is the working together of the different organs of the body in a proper manner. It is done by the nervous system (fast, by electrical impulses) and by the endocrine system (slow, by hormones). For example, when we see food, the eyes, brain and hand work together to pick it up.
Teacher's Note: Write a short, clear answer.
2. Parts of a neuron.
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Answer: A neuron has a cyton (cell body with the nucleus), dendrites (short branches that receive impulses) and an axon (a long fibre covered with the myelin sheath that carries the impulse away to the next neuron through the axon terminals).
Teacher's Note: Remember this for your exam.
3. Motor, sensory and association neurons.
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Answer:
| Neuron | Function |
|---|---|
| Sensory | Carries impulses from the receptors to the brain or spinal cord |
| Motor | Carries impulses from the brain or spinal cord to the muscles and glands |
| Association (relay) | Joins sensory and motor neurons inside the brain and spinal cord |
Teacher's Note: Learn this point and write it in your own words.
4. Differentiate: (a) voluntary and involuntary functions (b) nervous and chemical coordination (c) cranial and spinal nerves (d) sympathetic and parasympathetic systems.
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Answer:
| Pair | Difference |
|---|---|
| Voluntary and involuntary | Voluntary actions are under our will (writing); involuntary actions are not (heartbeat). |
| Nervous and chemical | Nervous coordination is quick and short-lived, using nerves; chemical is slow and long-lasting, using hormones. |
| Cranial and spinal | Cranial nerves (12 pairs) arise from the brain; spinal nerves (31 pairs) arise from the spinal cord. |
| Sympathetic and parasympathetic | Sympathetic prepares the body for action (faster heartbeat); parasympathetic calms and restores the body. |
Teacher's Note: Use the key term in your answer.
5. The pathway of a reflex action.
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Answer: A stimulus (a hot object) is detected by a receptor in the skin. The sensory neuron carries the impulse to the spinal cord, where a relay neuron passes it to a motor neuron. The motor neuron carries it to an effector (the muscle), which responds by pulling the hand away. The brain learns of it later.
Teacher's Note: Give an example if the question allows.
Free study material for Science
Practice Worksheet and Study Resources for Class 8 Science Nervous System
Download Practice Sheet: Nervous System (Class 8 Science)
Explore reliable practice questions for Nervous System tailored for Class 8 Science learners. Use these structured worksheets to evaluate preparedness and strengthen problem-solving skills.
Concept Clarification for Nervous System
Each worksheet is structured around standard CBSE textbooks, allowing students to check their working steps and correct mistakes early in their revision.
Additional Study Resources for Class 8 Science
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FAQs
You can download the teacher-verified PDF for CBSE Class 8 Science Nervous System Worksheet Set 06 from StudiesToday.com. These practice sheets for Class 8 Science are designed as per the latest CBSE academic session.
Yes, our CBSE Class 8 Science Nervous System Worksheet Set 06 includes a variety of questions like Case-based studies, Assertion-Reasoning, and MCQs as per the 50% competency-based weightage in the latest curriculum for Class 8.
Yes, we have provided detailed solutions for CBSE Class 8 Science Nervous System Worksheet Set 06 to help Class 8 and follow the official CBSE marking scheme.
Daily practice with these Science worksheets helps in identifying understanding gaps. It also improves question solving speed and ensures that Class 8 students get more marks in CBSE exams.
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