Question

Explain internal and external respiration​

Answer 1

Definition of internal respiration

: an exchange of gases between the cells of the body and the blood by way of the fluid bathing the cells

on the other hand

Definition of external respiration

: exchange of gases between the external environment and a distributing system of the animal body (such as the lungs of higher vertebrates or the tracheal tubes of insects) or between the alveoli of the lungs and the blood

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Answer 2

RESPIRATION

• Respiration is the chemical process, which involves breathing in oxygen , breathing out carbon dioxide & breakdown of food using oxide to release energy.

DETAILED EXPLANATION

• All living organisms require energy to carry out various life processes . like nutrition, transport, excretion, reproduction, etc. This energy is stored in the food that we eat .
• In order to break down food to release energy oxidation of food takes place. This reaction takes place in the cells of the body of the organisms.
• The oxygen needed for the oxidation comes from the air that we inhale. This oxygen is then transported to every cell.
• Thus, the process in which food is broken down to release energy is called respiration. During respiration, carbon dioxide and water are released as waste - products.

Types of Respiration :-

• Aerobic respiration requires oxygen and releases lots of energy.
• Anaerobic respiration does not require oxygen and releases less energy.