Question

What are the small pores on the underside of the leaves called where water transpires back into the atmosphere?

stomata
mesophylls
cholorplasts
Xylem

Answer 1

Stomata

All plant leaves need to breathe. The exchange of atmospheric gases is essential to photosynthesis, the process by which plants use sunlight to convert carbon dioxide and water into oxygen and fuel. Openings called stomata make this possible.
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