Solved 2017 Question Paper ICSE Class 10 Biology — Question 12
Back to all questionsThe diagram given below is an external view of the human brain. Study the same and answer the questions that follow: [5]
(i) Name the parts labelled A, B and C in the diagram.
(ii) State the main functions of the parts labelled A and B.
(iii) What are the structural and functional units of the brain? How are the parts of these units arranged in A and C?
(iv) Mention the collective term for the membranes covering the brain.
(v) What is the function of Cerebrospinal fluid?
Answer
(i) The parts labelled A, B and C are:
- A → Cerebrum
- B → Cerebellum
- C → Spinal Cord
(ii) The functions are mentioned below:
- Cerebrum (Part A) — It is the seat of intelligence, consciousness and will power. It controls all voluntary activities.
- Cerebellum (Part B) — It coordinates muscular activities and maintains balance of the body.
(iii) Neurons / nerve cells are the structural and functional units of the brain.
In part A (Cerebrum), Outer grey matter has cytons and inner white matter has axons.
In part C (Spinal Cord), Outer white matter has axons and inner grey matter has cytons.
(iv) Meninges
(v) Cerebrospinal fluid(CSF) acts like a cushion to protect the brain / spinal cord from injuries and shocks.
Answer: Cerebrum (Part A), Cerebellum (Part B)
Key Concepts Covered
This question tests your understanding of the following concepts from the chapter Solved 2017 Question Paper ICSE Class 10 Biology: Question, External, View, Human, Brain, Study. These are fundamental topics in Biology that students are expected to master as part of the ICSE Class 10 curriculum.
A thorough understanding of these concepts will help you answer similar questions confidently in your ICSE examinations. These topics are frequently tested in both objective and subjective sections of Biology papers. We recommend revising the relevant section of your textbook alongside practising these solved examples to build a strong foundation.
How to Approach This Question
Read the question carefully and identify what is being asked. Break down complex questions into smaller parts. Use the terminology and concepts discussed in this chapter. Structure your answer logically — begin with a definition or key statement, then provide supporting details. Review your answer to ensure it addresses all parts of the question completely.
Key Points to Remember
- Use precise scientific terminology as defined in the textbook.
- Draw and label diagrams neatly for full marks.
- Understand the difference between structure and function.
- Learn processes step-by-step in the correct sequence.
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