Solved 2012 Question Paper ICSE Class 10 Biology — Question 10
Back to all questionsThe diagram given below show the cross section of two kinds of blood vessels:
(i) Identify the blood vessels A and B. In each case give a reason to support your answer.
(ii) Name the parts numbered 1 and 2.
(iii) When are the sound "LUBB" and "DUP" produced during a heartbeat?
(iv) Name the blood vessel that:
- begins and ends in capillaries
- supplies blood to the walls of the heart. [5]
Answer
(i) A → Artery, B → Vein
A has narrow lumen and thick muscular wall whereas B has wide lumen and thin muscular wall.
(ii) The parts numbered 1 and 2 are:
- 1 → Endothelium
- 2 → Lumen
(iii) The first sound "LUBB" is produced when the atrio-ventricular (tricuspid and bicuspid) valves get closed sharply at the start of ventricular systole. The second sound "DUP" is produced when at the beginning of ventricular diastole, the semilunar valves at the roots of aorta and pulmonary artery get closed.
(iv) Names of the respective blood vessels are given below:
- Begins and ends in capillaries — "Hepatic portal Vein".
- Supplies blood to the walls of the Heart — "Coronary artery".
Answer: [5]
Key Concepts Covered
This question tests your understanding of the following concepts from the chapter Solved 2012 Question Paper ICSE Class 10 Biology: Question, Cross, Section, Blood, Vessels, Case. 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.
Practice more questions from Solved 2012 Question Paper ICSE Class 10 Biology — Biology, Class 10 ICSE