Select an incorrect statement regarding embryogeny and seeds?

Options

A. embryo develops at the micropylar end of the embryo sac
B. most zygotes divide only after certain amount of endosperm is formed
C. early stages of embryo development differ in both monocotyledons and dicotyledons.
D. seeds differ greatly in monocots and dicots

Answer

To solve the question of selecting an incorrect statement regarding embryogeny and seeds, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of Embryogeny**:
- Embryogeny refers to the development of the embryo from the fertilized egg (zygote) within the ovule.

2. **Analyze Each Statement**:
- **Statement 1**: "Embryo develops at the micropilar end of the embryo sac."
- This statement is correct. The embryo indeed develops at the micropilar end of the embryo sac where fertilization occurs.

- **Statement 2**: "Zygote divides only after a certain amount of endosperm is formed."
- This statement is also correct. The zygote will not divide until there is sufficient endosperm to provide nutrients for the developing embryo.

- **Statement 3**: "Early stages of embryo development differ in both monocotyledons and dicotyledons."
- This statement is incorrect. The early stages of embryo development in monocots and dicots are similar until the globular stage. After this stage, they begin to differ.

- **Statement 4**: "Seeds differ greatly in monocots and dicots."
- This statement is correct. Monocots have one cotyledon, while dicots have two, leading to significant differences in seed structure.

3. **Identify the Incorrect Statement**:
- Based on the analysis, the incorrect statement is **Statement 3**. The early stages of embryo development do not differ in monocots and dicots until after the globular stage.

### Conclusion:
The incorrect statement regarding embryogeny and seeds is **Statement 3**: "Early stages of embryo development differ in both monocotyledons and dicotyledons."

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