When is carbon dioxide produced as a waste product in plants?

Correct option is A

Sol: The correct answer is (a) During respiration

Key points:

​Respiration is the process by which plants break down glucose using oxygen to release energy.

The chemical equation for respiration is

$$Glucose+Oxygen→Energy (ATP)+Carbon Dioxide+Water$$

​​Respiration occurs in two main stages: glycolysis and the Krebs cycle.

​In the Krebs cycle, carbon atoms from glucose are released as carbon dioxide (CO₂).

​CO₂ is produced as a waste product and is expelled through the stomata in the plant’s leaves.

Information booster:

1. Photosynthesis: During photosynthesis, plants use light energy, carbon dioxide, and water to produce glucose and oxygen. Therefore, carbon dioxide is not produced during photosynthesis; instead, it is consumed.

2. Transpiration: This process involves the evaporation of water from the leaves of plants. It does not produce carbon dioxide.