Leaf anatomy has bundle sheath around the Vascular bundle in

Options

A. `C_3` plants
B. `C_4` plants
C. all dicot plants
D. 1 or 2

Answer

To solve the question regarding the presence of bundle sheath around the vascular bundle in leaf anatomy, we can follow these steps:

### Step 1: Understand the Question
The question asks about the presence of bundle sheath around the vascular bundle in leaf anatomy. We need to identify which type of plants exhibit this characteristic.

### Step 2: Identify Plant Types
We have four options to consider:
- Option A: C3 plants
- Option B: C4 plants
- Option C: All dicot plants
- Option D: One or two that is both C3 and C4

### Step 3: Review Leaf Anatomy
In plant anatomy, the bundle sheath is a layer of cells that encases the vascular bundles (xylem and phloem). This structure is significant in photosynthesis and the transport of nutrients.

### Step 4: Focus on C4 Plants
C4 plants have a specialized leaf anatomy known as "Kranz anatomy." In this arrangement, the bundle sheath cells are arranged in a circular pattern around the vascular bundles. This adaptation allows for more efficient photosynthesis under high light intensity and temperature.

### Step 5: Compare with Other Options
- C3 plants do not have a distinct bundle sheath around their vascular bundles like C4 plants do.
- The term "all dicot plants" is too broad and does not specifically refer to the presence of bundle sheath around vascular bundles.
- The option stating "one or two that is both C3 and C4" is incorrect, as C3 plants do not exhibit this feature.

### Step 6: Conclusion
Based on the above analysis, the correct answer is Option B: C4 plants, as they uniquely possess the bundle sheath around the vascular bundles.

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