Which of the following is a post-fertilisation event in flowering plants ?

Options

A. Transfer of pollen grains
B. Embryo development
C. Formation of flower
D. Formation of pollen grains

Explanation

To solve the question "Which of the following is a post-fertilisation event in flowering plants?", we can follow these steps:

### Step-by-Step Solution:

1. **Understand Fertilization**:
- Fertilization in flowering plants involves the fusion of male and female gametes, resulting in the formation of a zygote.

2. **Identify Post-Fertilization Events**:
- Post-fertilization events are those that occur after the zygote is formed. This includes processes that lead to the development of the embryo.

3. **Analyze the Options**:
- Review the options provided in the question. Common options might include:
- A) Transfer of pollen grains
- B) Embryo development
- C) Formation of the flower
- D) Formation of pollen grains

4. **Determine the Nature of Each Option**:
- **Transfer of pollen grains**: This is a pre-fertilization event as it occurs before fertilization takes place.
- **Embryo development**: This occurs after fertilization when the zygote divides and develops into an embryo. This is a post-fertilization event.
- **Formation of the flower**: This is also a pre-fertilization event as flowers are formed before fertilization.
- **Formation of pollen grains**: This is another pre-fertilization event, as pollen grains are produced before fertilization occurs.

5. **Conclude the Correct Answer**:
- Based on the analysis, the only option that represents a post-fertilization event is **Embryo development**.

### Final Answer:
The correct answer is **Embryo development**.

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