ICSE Class X Biology 2015 Solved Papers
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The diagrams given below are cross sections of blood vessels :
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Question : 66
Total: 98
Mention one structural difference between A B
Solution:
| A | B |
|---|---|
| 1. Thick muscular and elastic layer wall. | 1. Thin muscular and less elastic wall. |
| 2. Narrow lumen | 2. Wide lumen. |
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