Ovule is tritegumic in

Options

A. Juglans
B. Casuarina
C. Opunita
D. Asphodelus.

Answer

To determine which plant has tritegumic ovules, we need to analyze the types of ovules based on the number of integuments they possess. Here’s a step-by-step solution:

### Step 1: Understand the Types of Ovules
- Ovules can be classified based on the number of integuments:
1. **A-tegmic**: No integuments.
2. **Unitegmic**: One integument.
3. **Bitegmic**: Two integuments.
4. **Tritegmic**: Three integuments.

### Step 2: Identify the Characteristics of Tritegmic Ovules
- Tritegmic ovules are characterized by having three integuments surrounding the ovule. This is a specific feature that distinguishes them from the other types.

### Step 3: Analyze the Given Options
- The options provided are:
1. Juglans
2. Casuarina
3. Opuntia
4. Osphodelus

### Step 4: Determine Which Plant Has Tritegmic Ovules
- Among the given options, we need to identify which one is known to have tritegmic ovules.
- Based on botanical knowledge, **Aspergillus** is a genus that is known for having tritegmic ovules. However, this is not one of the options provided.

### Step 5: Conclusion
- From the options given, **Juglans** (walnut) is known to have tritegmic ovules. Therefore, the answer to the question "Ovule is tritegumic in" is **Juglans**.

### Final Answer
- **Juglans**

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