ICSE Class X Biology 2015 Solved Papers

The diagrams given below are cross sections of blood vessels :

Question : 66 of 98

Marks: +1, -0

Mention one structural difference between

A

and

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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