Two unequal lengthed flagellae are arranged at lateral side of male gamete in

Options

A. Caldophora
B. Pteris
C. Funaria
D. Fucus

Answer

To solve the question "Two unequal length flagellae are arranged at lateral side of male gamete in", we will analyze each option provided and determine which organism fits the description.

### Step-by-Step Solution:

1. **Understanding the Question:**
- The question asks about a male gamete that has two flagella of unequal lengths positioned laterally.

2. **Analyzing Option 1: Cladophora**
- Cladophora is a green algae belonging to the Chlorophyceae class.
- In Cladophora, the male gamete is single-celled and has two flagella that are of equal length and located at the apex (tip) of the cell.
- **Conclusion:** Cladophora does not fit the description.

3. **Analyzing Option 2: Teres**
- Teres is a type of pteridophyte.
- The male gametes in pteridophytes can vary in number and arrangement depending on the species. They can have multiple flagella, but they are not specifically described as being unequal in length or lateral.
- **Conclusion:** Teres does not fit the description.

4. **Analyzing Option 3: Funaria**
- Funaria is a bryophyte.
- The male gamete of Funaria is unique and has a comma-shaped structure with two flagella. However, these flagella are not described as being unequal in length or positioned laterally.
- **Conclusion:** Funaria does not fit the description.

5. **Analyzing Option 4: Fucus**
- Fucus is a brown algae (Phaeophyceae).
- In Fucus, the male gamete has two flagella that are unequal in length and are arranged laterally. One flagellum is smooth, while the other has small tensile fibers, making them distinct.
- **Conclusion:** Fucus fits the description perfectly.

6. **Final Answer:**
- The correct answer is **Option 4: Fucus**.