How many of the following statements are correct? | CGP Edu

Biology Breathing and Exchange of Gases Statement Based Questions Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 21, 2026

How many of the following statements are correct?

A

O 2 is utilized by the organisms to indirectly break down nutrient molecules. Only one

B

Process of exchange of CO 2 from the atmosphere with O 2 produced by the cells is called breathing. Only two

C

Mammals have an well-developed respiratory system. Three

D

We have a pair of external nostrils, which opens outside above the upper lips. All are correct

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