EVERYDAY SCIENCE

Detailed explanation-1: -They breathe through their skin. Air dissolves on the mucus of their skin, so they MUST stay moist to breathe. If worms dry out, they suffocate. As fresh air is taken in through the skin, oxygen is drawn into the worm’s circulatory system, and the worm’s hearts pump the oxygenated blood to the head area.

Detailed explanation-2: -Earthworms do not have lungs; instead, they breathe through their skin. Their skin needs to stay moist to allow the passage of dissolved oxygen into their bloodstream. Earthworm skin is coated with mucus, and they need to live in a humid, moist environment.

Detailed explanation-3: -Earthworms do not have specialized respiratory organs like we do; instead, they take in oxygen and expel carbon dioxide directly through their skin.

Detailed explanation-4: -Can worms drown? Worms can survive underwater for several weeks as their skin can absorb oxygen from the water.

Detailed explanation-5: -Earthworms need their skin to breathe. Because their skin is gas permeable. Their skin is moist, and cutaneous respiration is the process of breathing via the skin.