Question

Which of the following gases do plants require for respiration?

• A. O2
• B. CO2
• C. N2
• D. H2O

Answer 1

Answer:

A. O2

• 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.