Question

explain the respiration in lower animal's ​

Answer 1

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• Lower animals lack a sophisticated respiratory system like lungs, alveoli etc.

• Respiration in them takes place by simple exchange mechanisms.

• Animals like earthworms take in gases through their skin.

• Fishes have gills for gaseous exchange.

• Insects have a tracheal system, which is a network of tubes, through which air circulates and gaseous exchange takes place.

• Frogs breathe through their skin when in water and through their lungs when on land.

Answer 2

Answer:

Respiration is the process of releasing energy from food and this takes place inside the cells of the body. The process of respiration involves taking in oxygen (of air) into cells, using it for releasing energy by burning food, and then eliminating the waste products (carbon dioxide and water) from the body.