Flagellated male gametes are present in all the three of which one of the following sets

Options

A. Zygnema, Pinus and Hydrilla
B. Fucus, Marsilea and Calotropis
C. Riccia, Dryopteris and Cycas
D. Anthoceros, Funaria and Spirogyra

Explanation

To solve the question regarding which set contains flagellated male gametes, we will analyze the options provided and identify the presence of flagellated male gametes in each group.

### Step-by-Step Solution:

1. **Understanding Flagellated Male Gametes**:
- Flagellated male gametes are typically found in lower plants, such as bryophytes and some pteridophytes, as well as in certain gymnosperms. They are motile and have flagella.

2. **Analyzing the Options**:
- **Option 1: Ziganema, Pinus, and Hydrilla**:
- Ziganema is a type of green algae and does not have flagellated male gametes.
- Pinus (a gymnosperm) does have flagellated male gametes.
- Hydrilla (an aquatic plant) does not have flagellated male gametes.
- Since Ziganema and Hydrilla do not have flagellated male gametes, this option is incorrect.

- **Option 2: Marsilia and Calotropis**:
- Marsilia (a pteridophyte) has flagellated male gametes.
- Calotropis (a dicot) does not have flagellated male gametes.
- Since Calotropis does not have flagellated male gametes, this option is also incorrect.

- **Option 3: Riccia, Dryopteris, and Cycas**:
- Riccia (a liverwort) has flagellated male gametes.
- Dryopteris (a pteridophyte) also has flagellated male gametes.
- Cycas (a gymnosperm) has flagellated male gametes.
- All three plants in this option have flagellated male gametes, making this option correct.

- **Option 4: Anthoceros, Planaria, and Pyroera**:
- Anthoceros (a hornwort) has non-flagellated male gametes.
- Planaria is not a plant and does not apply to this question.
- Pyroera does not have flagellated male gametes.
- Since Anthoceros does not have flagellated male gametes and Planaria is irrelevant, this option is incorrect.

3. **Conclusion**:
- The only option where all three plants have flagellated male gametes is **Option 3: Riccia, Dryopteris, and Cycas**.

### Final Answer:
The correct option is **Option 3: Riccia, Dryopteris, and Cycas**.

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