Oxygen released during photosynthesis comes from which among the following?

Question

Question

This question was previously asked in

JKSSB SI Official Paper (Held On: 13 Dec 2022 Shift 1)

Answer 1

The correct answer is Water.

Key Points

During the process of photosynthesis, plants convert light energy into chemical energy.
In the presence of sunlight, plants absorb carbon dioxide from the air and water from the soil.
Water molecules are split into hydrogen and oxygen atoms in the presence of light energy through a process called photolysis.
The oxygen atoms combine to form molecular oxygen (O₂), which is then released into the atmosphere.
Thus, the oxygen released during photosynthesis comes from the water molecules.

Additional Information

Chlorophyll
- Chlorophyll is a green pigment found in plants that absorbs light energy used to drive photosynthesis.
- It does not release oxygen; rather, it facilitates the process by which oxygen is produced.
- The main function of chlorophyll is to capture light energy and convert it into chemical energy.
Carbon dioxide
- Carbon dioxide (CO₂) is absorbed by plants from the atmosphere during photosynthesis.
- It is converted into glucose and other carbohydrates, not oxygen.
- Carbon dioxide is a vital component of the Calvin cycle in photosynthesis.