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Which of the following is not special ab...

Which of the following is not special about `C_(4)` plants ?

A

Responsiveness to high light intensities

B

Presence of Photorespiration

C

Greater productivity

D

Narrow stomatal pores

Text Solution

AI Generated Solution

The correct Answer is:
To determine which of the following is not special about C4 plants, we need to analyze the characteristics and processes associated with C4 plants compared to C3 plants. Here’s a step-by-step breakdown of the solution: ### Step-by-Step Solution: 1. **Understand C3 and C4 Plants**: - C3 plants primarily use the Calvin cycle (C3 cycle) for photosynthesis. They have a tendency to undergo photorespiration due to the enzyme Rubisco fixing oxygen instead of carbon dioxide under certain conditions. - C4 plants, such as sugarcane, have adapted to minimize photorespiration by using a different pathway (C4 cycle) to concentrate carbon dioxide in bundle sheath cells. 2. **Identify Key Features of C4 Plants**: - C4 plants possess a unique leaf anatomy known as Kranz anatomy, which includes specialized bundle sheath cells that contain chloroplasts. - They are efficient in fixing carbon dioxide and do not undergo photorespiration, which enhances their productivity, especially in high light and temperature conditions. 3. **Evaluate the Options**: - The question asks which of the following characteristics is **not** special about C4 plants. - One of the characteristics mentioned is the presence of photorespiration. Since C4 plants are specifically adapted to avoid photorespiration, this characteristic is not special about them. 4. **Conclusion**: - The correct answer is that the presence of photorespiration is **not** a special feature of C4 plants. Instead, it is a characteristic of C3 plants. ### Final Answer: The characteristic that is not special about C4 plants is the presence of photorespiration. ---
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