Question

Which is a hole that allows for gases to move in and out?
for leaf cross-section

Answer 1

Answer:

Carbon dioxide and oxygen cannot pass through the cuticle, but move in and out of leaves through openings called stomata (stoma = "hole"). Guard cells control the opening and closing of stomata. When stomata are open to allow gases to cross the leaf surface, the plant loses water vapor to the atmosphere.

Explanation:

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Answer 2

answer is stomata I guess because that is responsible for exchange of gases in a leaf!