Which underground stem helps in the storage of food and perennation ?

Options

A. Colocasia
B. Zamikand
C. Turmeric
D. All of these

Answer

To solve the question "Which underground stem helps in the storage of food and perennation?", we can follow these steps:

### Step 1: Understand the Types of Underground Stems
- There are different types of underground stems that serve various purposes, including storage of food and perennation (survival through unfavorable conditions).

### Step 2: Identify the Types of Underground Stems Mentioned
- The question mentions three examples: **Colocasia**, **Jamikand**, and **Turmeric**.

### Step 3: Analyze Each Example
1. **Turmeric**:
- Turmeric has **rhizomes**. Rhizomes are modified stems that grow horizontally underground and are capable of storing food. They also help in perennation.

2. **Colocasia**:
- Colocasia also has a modified stem called a **corm**. Corms are swollen underground stems that store food and help the plant survive through adverse conditions.

3. **Jamikand**:
- Jamikand (or Elephant foot yam) also has a **corm**. Like Colocasia, it is an underground stem that stores food and aids in perennation.

### Step 4: Conclusion
- All three examples (Turmeric, Colocasia, and Jamikand) have underground stems that help in the storage of food and perennation. Therefore, the correct answer to the question is **"All of these."**

### Final Answer:
**All of these.**

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