Question

The by-product of photosynthesis is

• A. CO₂
• B. H₂0
• C. Glucose
• D. O₂

Answer 1

The correct option is D

O₂

The correct option is D.

Explanation for the correct option.

1. Solar energy is harnessed as chemical energy during the photosynthesis process, which converts water and carbon dioxide into glucose.
2. As a by-product, oxygen is emitted.

Explanation for the wrong option.

Option a:

1. Plants take carbon dioxide and water from the air and soil during photosynthesis.
2. Water undergoes oxidation in the plant cell, meaning it loses electrons, whereas carbon dioxide undergoes reduction, meaning it acquires electrons.
3. When water and oxygen are combined, carbon dioxide is transformed into glucose.

Option b:

1. Photosynthesis necessitates water, and a scarcity of it could cause problems with carbon dioxide absorption.
2. Due to a scarcity of water, stomatal openings refuse to hold it.

Option c:

Photosynthesis generates both oxygen and glucose, but mostly oxygen, from three basic components: sunlight, water, and carbon dioxide.

Final answer: As a result , by-product of photosynthesis is oxygen.