Bitegmic ovules occur in the following gymnosperm plant :–

Options

A. Ginkgo
B. Taxus
C. Gnetum
D. All the above

Answer

To determine which gymnosperm plant has bitegmic ovules, we can follow these steps:

### Step 1: Understand the Types of Ovules
- **Bitegmic Ovules**: These ovules have two integuments surrounding the megasporangium.
- **Unitagmic Ovules**: These ovules have only one integument.

### Step 2: Identify the Plants Mentioned
- The plants mentioned in the question are:
1. Zinc
2. Zome
3. Texas
4. Natum

### Step 3: Analyze Each Plant
- **Zinc**: This plant has unitagmic ovules.
- **Zome**: This plant also has unitagmic ovules.
- **Texas**: Similar to the others, Texas has unitagmic ovules.
- **Natum**: This plant is known to have bitegmic ovules.

### Step 4: Conclusion
- Based on the analysis, the only plant among the options that has bitegmic ovules is **Natum**.

### Final Answer
The gymnosperm plant that has bitegmic ovules is **Natum**.

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