Which of the following gases is released in the process of photosynthesis?

Oxygen

The correct answer is Option (3)- Oxygen

In the process of photosynthesis, oxygen is released. Here's an explanation:

Photosynthesis:

• Definition: Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy into chemical energy in the form of glucose. This process takes place in the chloroplasts of plant cells.
• Chlorophyll: Chlorophyll, the green pigment in plant cells, plays a crucial role in capturing light energy from the sun.
• Carbon Dioxide Uptake: During photosynthesis, plants take in carbon dioxide (CO₂) from the atmosphere through tiny pores called stomata, primarily located on the leaves.
• Oxygen Release: In the process of photosynthesis, light energy is used to convert carbon dioxide and water into glucose and oxygen.The chemical equation for photosynthesis is as follows: 
• Oxygen as a Byproduct: Oxygen (O₂) is released into the atmosphere as a byproduct of photosynthesis.

Significance: Photosynthesis is crucial for the production of organic compounds that serve as energy sources for plants and other organisms. Additionally, the released oxygen is vital for sustaining aerobic life on Earth.

Therefore, during the process of photosynthesis, oxygen is produced and released into the environment.