Cleavage polyembryony occurs in

Options

A. Pinus
B. Cycas
C. Angiosperms
D. Pteridophytes.

Answer

### Step-by-Step Solution:

1. **Understanding Polyembryony**:
- Polyembryony is a phenomenon where more than one embryo develops from a single fertilized egg or seed. This can lead to multiple embryos within the same seed.

2. **Types of Polyembryony**:
- There are different types of polyembryony, including cleavage polyembryony. Cleavage polyembryony occurs when the embryo divides into multiple embryos during its development.

3. **Examples of Polyembryony**:
- Polyembryony is commonly observed in certain plants such as mango and citrus. These are examples of plants that exhibit polyembryony.

4. **Cleavage Polyembryony in Gymnosperms**:
- In gymnosperms (a group of seed-producing plants), cleavage polyembryony can occur due to the division of the growing embryo. This phenomenon is seen in species like Pinus and Cycas.

5. **Identifying the Correct Options**:
- Based on the information, we can conclude that cleavage polyembryony occurs in both gymnosperms (like Pinus and Cycas) and some angiosperms (like mango and citrus).
- Therefore, the correct answers to the question are options 1, 2, and 3, while option 4 is incorrect.

### Final Answer:
Cleavage polyembryony occurs in options 1, 2, and 3 (Pinus, Cycas, and mango/citrus).

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