Stomata

Summary: On the lower surface of the leaf, there are tiny holes called stomata (singular: stoma). Stomata allow gases to diffuse into and out of the leaf. - Carbon dioxide diffuses in. Carbon dioxide is a reactant in photosynthesis. It takes part in and changes during the reaction. - Oxygen diffuses out. Oxygen is a product of photosynthesis. Tags: science student-book-7 biology Created: 2026-05-21 Last Updated: 2026-05-21

Stomata

On the lower surface of the leaf, there are tiny holes called stomata (singular: stoma). Stomata allow gases to diffuse into and out of the leaf. - Carbon dioxide diffuses in. Carbon dioxide is a reactant in photosynthesis. It takes part in and changes during the reaction. - Oxygen diffuses out. Oxygen is a product of photosynthesis.

Source

This concept is from the [Science Student Book 7](Science Student Book 7/Biology/Plants/4.2 Leaves.md), Biology section.