Zygotic meiosis occurs in

Options

A. Algae/Thallophytes
B. Gymnosperms
C. Angiosperms
D. Pteridophyta.

Answer

### Step-by-Step Solution:

1. **Understanding Zygotic Meiosis**:
- Zygotic meiosis refers to the process where meiosis occurs in the zygote. This results in the formation of haploid individuals from a diploid zygote.

2. **Identifying the Organisms**:
- The question asks in which of the following groups zygotic meiosis occurs: algae (thalophytes), gymnosperms, angiosperms, or pteridophytes.

3. **Analyzing Algae (Thalophytes)**:
- Algae, which fall under the category of thalophytes, have a dominant gametophytic generation. This means that the haploid phase is prominent, and zygotic meiosis occurs here, leading to the formation of haploid individuals.

4. **Examining Gymnosperms and Angiosperms**:
- Gymnosperms and angiosperms are classified as spermatophytes. In these groups, meiosis occurs during the formation of gametes (gametic meiosis), not in the zygote. Therefore, zygotic meiosis does not occur in these groups.

5. **Considering Pteridophytes**:
- In pteridophytes, meiosis occurs in the formation of spores (sporophyte generation), which is termed sporic meiosis. Thus, zygotic meiosis is not applicable here either.

6. **Conclusion**:
- Based on the analysis, zygotic meiosis occurs in algae (thalophytes), making it the correct answer.

### Final Answer:
Zygotic meiosis occurs in **algae (thalophytes)**.

---