Top-shaped multicilate male gametes, and the mature seed which bears only one embryo with two cotyledons, are chracteristic features of

Options

A. Polypetalous angiosperms
B. Gamopetalous angiosperms
C. Conifers
D. Cucads

Answer

To solve the question regarding the characteristic features of top-shaped multiciliate male gametes and mature seeds with one embryo and two cotyledons, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Key Features**:
- The question mentions "top-shaped multiciliate male gametes" and "mature seed which bears only one embryo with two cotyledons."

2. **Understand Male Gametes**:
- The term "multiciliate" refers to male gametes that have multiple flagella (cilia), which is a characteristic of certain types of plants.

3. **Analyze the Seed Structure**:
- The description of the mature seed having "only one embryo with two cotyledons" indicates that we are dealing with a specific group of plants. In botany, seeds with two cotyledons are classified as dicots.

4. **Link to Plant Groups**:
- The combination of multiciliate male gametes and the structure of the seed suggests that we are looking at a specific group within the angiosperms (flowering plants).

5. **Identify the Correct Group**:
- The features described are characteristic of **polypetalous angiosperms**. These are flowering plants that have multiple petals and typically exhibit the mentioned reproductive and seed characteristics.

6. **Conclusion**:
- Therefore, the answer to the question is that these features are characteristic of **polypetalous angiosperms**.

### Final Answer:
The characteristic features of top-shaped multiciliate male gametes and mature seeds with one embryo and two cotyledons are indicative of **polypetalous angiosperms**.