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Question 4

From Biology SL Paper 2 (November 2024, TZ2)

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  1. The micrograph shows tissue with two major blood vessels.
Micrograph showing a cross-section of two blood vessels, one with a thicker, more circular wall (likely an artery) and another with a thinner, more irregular wall (likely a vein).
Micrograph showing a cross-section of two blood vessels, one with a thicker, more circular wall (likely an artery) and another with a thinner, more irregular wall (likely a vein).

(a) Label an artery on the diagram. [1]

(b) Distinguish between the structure of arteries and veins. [2]

(c) Suggest a reason that capillaries are not visible in the micrograph. [1]

Textbook topics in this question

Review the exact course sections assessed by each question part.

4(a)8.2 Animal Transport
4(b)8.2 Animal Transport
4(c)8.2 Animal Transport