`CO_(2)` concentrating steps are found in

Options

A. Rice
B. sugarcane
C. Wheat
D. Tomato

Answer

To determine which plant has CO₂ concentrating steps, we need to understand the types of photosynthesis and the plants that utilize them. Here’s a step-by-step solution:

### Step 1: Identify the Types of Photosynthesis
There are primarily three types of photosynthetic pathways in plants: C3, C4, and CAM (Crassulacean Acid Metabolism).

### Step 2: Understand CO₂ Concentrating Mechanisms
C4 plants have a specialized mechanism for concentrating CO₂. This is important because it allows them to efficiently fix carbon dioxide even in conditions where it is less available, such as high temperatures and low humidity.

### Step 3: Analyze the Given Options
The question provides four options:
1. Rice
2. Sugarcane
3. Wheat
4. Tomato

### Step 4: Classify Each Plant
- **Rice**: This is a C3 plant. It does not have CO₂ concentrating steps.
- **Sugarcane**: This is a C4 plant. It has CO₂ concentrating steps.
- **Wheat**: This is also a C3 plant. It does not have CO₂ concentrating steps.
- **Tomato**: This is another C3 plant. It does not have CO₂ concentrating steps.

### Step 5: Conclusion
Since only sugarcane is classified as a C4 plant, it is the only option that has CO₂ concentrating steps.

### Final Answer
The correct answer is **Sugarcane**.

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