Question

In the given below diagram

• A. $I$ is photosynthesis, $II$ is respiration, $B$ is photosynthesis only
• B. $I$ is respiration, $II$ photosynthesis, $B$ is carbohydrates only
• C. $I$ is photosynthesis, $II$ is respiration, $B$ is oxygen only
• D. $I$ is respiration, $II$ is photosynthesis and $B$ are carbohydrates and oxygen

Answer 1

The correct option is D $I$ is respiration, $II$ is photosynthesis and $B$ are carbohydrates and oxygen

Respiration is a process that utilizes and breaks down food (here, carbohydrate) in presence of oxygen (here, aerobic respiration) in order to release energy, this is followed by the production or excretion of carbon dioxide and water which is utilized by plants in the process of photosynthesis in order to produce carbohydrates (or starch) and oxygen which is released as a by-product by the plants in the process of photosynthesis. This follows the cycle again.

So, the correct answer is 'I is respiration, II is photosynthesis, B carbohydrates, and oxygen.'