EVERYDAY SCIENCE

Detailed explanation-1: -Earthworms and frog have moist and slimy skin that helps them to absorb the oxygen for respiration.

Detailed explanation-2: -The worm’s skin is protected by a thin cuticle and kept moist by a slimy mucus. This lets it absorb the oxygen it needs and expel carbon dioxide. If a worm is dried up by the sun, it will die because the exchange of gases can’t take place.

Detailed explanation-3: -Earthworms range in color from reddish to gray to brown. Their skin, called a cuticle, is soft and permeable. It’s also slimy-so much so that most people are reluctant to touch them.

Detailed explanation-4: -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-5: -Earthworms and frogs breathe through the skin. It is cutaneous respiration. Their skin is moist and slimy for easy transport of gases. If the skin becomes dry, it becomes a hurdle for respiration.