A stoma (plural stomata) is a tiny opening on the underside of a leaf used for the exchange of gasses. They take in carbon dioxide (CO2) while releasing water (H2O) and oxygen (O2). This process is essential to a plant’s growth facilitating photosynthesis.

Learn all about stomata:

More plant parts:

Flower | Chloroplasts | Chlorophyll | Cola | Calyx | Pistil | Pollen | Pollen sacs | Trichomes | Stem | Node | Fan leaves | Sugar leaves

World Icon

marijuana seeds worldwide

200 grow guides

500 Helpful Articles

Group Icon

group of growers

35,000+ Daily Visitors

500,000+ Grow Bible readers

Plant Icon

marijuana strains

1500 Strain Reviews

100 Strains For Sale