Earthworms breathe through their (a) skin (b) gills (c) lungs stomata

• Solution:

• : skin

Breathing occurs in earthworms through moist body surface. Earthworms lack specialized breathing organs.

Gills are generally present in aquatic animals for respiration (e.g. fish). Lungs are present in land animals (e.g. mammals) for respiration.

Exchange of gases in plants takes place through stomata.