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Is transpiration part of the gas exchange system in plants, the water exchange system in plants, or both?

Answer 1

Natalie Ahrens

It is gas exchange system.

Transpiration is gas exchange system in the plants. Mainly, water vapour is lost through this system and it cools down the plant body especially leaves. But some other gases such as oxygen, carbon dioxide etc., are also exchanged through it.
There is a separate system of water loss in plants. Water loss is performed by the guttation through the hydathodes. Thank you

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Answer 2

Daniel Allen

Though mainly related to the water exchange system in plants, transpiration also plays an indirect role in gas exchange by drawing carbon dioxide into the leaf through stomata, which in turn promotes photosynthesis.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.