The gas exchange surface in an earthworm is

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The gas exchange surface in an earthworm is

Options

(a) tracheae
(b) gills
(c) skin
(d) ctenidia

Correct Answer:

skin

Explanation:

No explanation available. Be the first to write the explanation for this question by commenting below.

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Topics: Structural Organisation In Animals (175)
Subject: Biology (4253)

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