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Which of the following gases do plants require for respiration?

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in Biology – Class 11 by (272k points)
Which of the following gases do plants require for respiration?

(a) O2

(b) CO2

(c) N2

(d) H2O

This question was posed to me in an online interview.

My doubt is from Respiration in Plants topic in portion Respiration in Plants of Biology – Class 11

1 Answer

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Correct choice is (a) O2

The explanation is: Plants do not require CO2, N2 or water vapour for respiration. Like human beings, plants also require oxygen for respiration so that they can release CO2. It is through photosynthesis, that they require carbon dioxide and release oxygen in a very large amount.

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