which of these statements is correct about Eudorina ?

Options

A. It is a green alga and is isogamous
B. It is a green alga and is anisogamous
C. It is a brown alga and is isogamous
D. It is a brown alga and is anisogamous

Answer

To determine the correct statement about Eudorina, we can analyze the options provided and the characteristics of Eudorina.

### Step-by-Step Solution:

1. **Identify Eudorina**:
- Eudorina is classified as a type of algae. Specifically, it belongs to the group of green algae.
- **Hint**: Remember that Eudorina is a green algae, which means it contains chlorophyll.

2. **Characteristics of Eudorina**:
- Eudorina is known for its colonial nature, meaning it exists in groups or colonies.
- It possesses flagella, which are whip-like structures that aid in movement.
- **Hint**: Think about how the presence of flagella contributes to the motility of Eudorina.

3. **Reproductive Strategy**:
- Eudorina has evolved from isogamous ancestors, which means that its ancestors had gametes that were identical in size and structure.
- However, Eudorina itself exhibits anisogamy, where the gametes are unequal in size.
- **Hint**: Distinguish between isogamous (identical gametes) and anisogamous (unequal gametes) reproduction.

4. **Evaluate the Options**:
- The options provided are:
1. Green algae and isogamous
2. Green algae and isogamous
3. Brown algae and isogamous
4. Brown algae and anisogamous
- Since Eudorina is a green algae, we can eliminate options 3 and 4.
- Among the remaining options, we need to determine if Eudorina is isogamous or anisogamous. Since we established that Eudorina is anisogamous, the correct option is the one that states it is a green algae and anisogamous.
- **Hint**: Focus on the reproductive characteristics to differentiate between the options.

5. **Conclusion**:
- The correct statement about Eudorina is that it is a green algae and it is anisogamous.

### Final Answer:
Eudorina is a green algae and it is anisogamous.