Question

Which of these processes releases oxygen into the air?

• A. respiration
• B. photosynthesis
• C. burning
• D. all of these

Answer 1

The correct option is B

photosynthesis

The explanation of the correct answer - (B) Photosynthesis

Photosynthesis is the process through which plants convert carbon dioxide and water in presence of sunlight into glucose and oxygen.

The explanation for the incorrect answer-

(A) Respiration is the process of conversion of food into energy in the presence or absence of oxygen. majority respiration process requires oxygen.

(C) Burning - Also known as combustion, is the process in which fuel is oxidised in presence of oxygen. combustion cannot take place without oxygen.

Therefore both the above-mentioned process consumes oxygen.

Hence, option (B) is correct. photosynthesis is the process which releases oxygen.