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3. Define the following:
(a) Respiration
(b) External respiration
(c) Internal respiration

4. Write the respiratory organs of the following:
(a) Fish
(b) Frog
(c) Insects
(d) Amphibians



Answer :

GinnyAnswer

Final answer:

Respiration is the process of oxygen intake and carbon dioxide release. External respiration occurs in the lungs, while internal respiration happens between blood and tissues.


Explanation:

Respiration is the process by which organisms take in oxygen from the air and release carbon dioxide.

  1. External respiration involves the exchange of gases between the lungs and the external environment.
  2. Internal respiration is the exchange of gases between the blood and the body tissues.

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