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Q: Some features of a respiratory surface in animals are mentioned below. Select the INCORRECT option.
  • A. Presence of a mechanism for moving air in and out of this area
  • B. Is very thick
  • C. Has a large surface area
  • D. Usually placed inside the body
Correct Answer: Option B - All respiratory organs have large and thin surface area to get enough oxygen or help with the exchange of gases. They are thin – walled for easy diffusion of gases and substances. They have rich supply of blood or the conducting fluid present in the body for transporting respiratory gases to the tissues of the body. Hence, option (b) is the right answer.
B. All respiratory organs have large and thin surface area to get enough oxygen or help with the exchange of gases. They are thin – walled for easy diffusion of gases and substances. They have rich supply of blood or the conducting fluid present in the body for transporting respiratory gases to the tissues of the body. Hence, option (b) is the right answer.

Explanations:

All respiratory organs have large and thin surface area to get enough oxygen or help with the exchange of gases. They are thin – walled for easy diffusion of gases and substances. They have rich supply of blood or the conducting fluid present in the body for transporting respiratory gases to the tissues of the body. Hence, option (b) is the right answer.