Number of integuments present in the ovule of Pinus/Cycas is

Options

A. Two
B. Three
C. One
D. Four.

Answer

To determine the number of integuments present in the ovule of Pinus or Cycas, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of the Ovule**:
- The ovule is a crucial part of seed plants, which contains the megasporangium (nucellus) and is surrounded by integuments. The integuments are protective layers that cover the ovule.

2. **Identify the Types of Plants**:
- Pinus and Cycas belong to different groups of seed plants. Pinus is a gymnosperm, while Cycas is a cycad, which is also classified under gymnosperms.

3. **Determine the Number of Integuments**:
- In gymnosperms, including both Pinus and Cycas, the ovule typically has one integument. This characteristic is referred to as "unitegmic."
- In contrast, angiosperms usually have two integuments, known as "bitegmic."

4. **Conclusion**:
- Therefore, the number of integuments present in the ovule of Pinus and Cycas is **1**.

### Final Answer:
The number of integuments present in the ovule of Pinus/Cycas is **1**.

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