One of the following is called pitcher plant ……

Options

A. Nepenthes
B. Aristolochia
C. Drosera
D. Utricularia

Explanation

To answer the question "One of the following is called pitcher plant," we will analyze the given options and identify which one is the correct answer.

### Step-by-Step Solution:

1. **Understand the Definition**: A pitcher plant is a type of carnivorous plant that has modified leaves known as "pitchers." These structures trap and digest insects and other prey to obtain nutrients, particularly nitrogen.

2. **Analyze the Options**:
- **Option A: Niphenthes** - This is known as the pitcher plant. It has specialized leaves that form a pitcher shape to trap prey.
- **Option B: Aristolochia** - This is not a pitcher plant; it is known for its unique flower shape and is not carnivorous.
- **Option C: Drosera** - Also known as sundew, this plant captures prey using sticky glandular hairs but does not have a pitcher structure.
- **Option D: Utricularia** - Known as bladderwort, this plant also captures prey but uses bladder-like traps rather than pitcher structures.

3. **Identify the Correct Answer**: Based on the analysis, the correct answer is **Option A: Niphenthes**, as it is the only one that is commonly referred to as a pitcher plant.

### Final Answer:
The answer to the question is **Niphenthes**.

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