In chlorophyta the mode of sexual reproduction is :-

Options

A. Isogamy
B. Anisogamy
C. Oogamy
D. Isogamy, Anisogamy and oogamy

Answer

### Step-by-Step Solution:

1. **Understanding Chlorophyta**:
- Chlorophyta, also known as Chlorophyceae, is a class of green algae that contain chlorophyll and are primarily aquatic.

2. **Types of Sexual Reproduction**:
- There are three main types of sexual reproduction discussed: isogamy, anisogamy, and oogamy.

3. **Isogamy**:
- In isogamy, both male and female gametes are of the same size and shape. They are indistinguishable from each other, meaning you cannot tell which is male and which is female.

4. **Anisogamy**:
- Anisogamy involves gametes that are different in size and shape. Typically, the female gamete is larger than the male gamete, and they can be distinguished from one another.

5. **Oogamy**:
- Oogamy is characterized by a large, non-motile female gamete (ovum) and a small, motile male gamete (sperm). The male gamete swims to the female gamete for fertilization.

6. **Reproductive Modes in Chlorophyta**:
- Chlorophyta can reproduce sexually through all three modes: isogamy, anisogamy, and oogamy. This means they have the ability to produce offspring via any of these reproductive strategies.

7. **Conclusion**:
- Therefore, the mode of sexual reproduction in Chlorophyta includes both isogamy and oogamy.

### Final Answer:
In Chlorophyta, the mode of sexual reproduction is isogamy and oogamy.

---