Select an incorrect statement for angiosperms

Options

A. Embryo-sac formation is preceded by meiosis
B. Pollen grains germinate on the stigma
C. Zygote develops into an embryo
D. Pollen tubes enter the endosperm where two male gametes are discharged

Answer

To solve the question of selecting an incorrect statement regarding angiosperms, we will analyze each statement provided about angiosperms step by step.

### Step-by-Step Solution:

1. **Understanding Angiosperms**:
- Angiosperms are flowering plants that produce seeds enclosed within a fruit. They are characterized by their reproductive structures, which include flowers and fruits.

2. **Analyzing the Statements**:
- **Statement 1**: "Ambrosec formation is proceeded by meiosis."
- This statement is correct. Meiosis occurs to produce the haploid cells that will form the embryo sac in angiosperms.

- **Statement 2**: "Pollen grains germinate on stigma."
- This statement is also correct. Pollen grains land on the stigma of a flower, where they germinate to form a pollen tube that will eventually lead to fertilization.

- **Statement 3**: "Zygote develops into Embryo."
- This statement is correct as well. After fertilization, the zygote develops into an embryo within the seed.

- **Statement 4**: "Pollen tube enters the endosperm."
- This statement is incorrect. The pollen tube does not enter the endosperm; it enters the embryo sac where fertilization occurs. The endosperm is formed after fertilization when one of the male gametes fuses with the central cell.

3. **Conclusion**:
- The incorrect statement regarding angiosperms is **Statement 4**: "Pollen tube enters the endosperm."

### Final Answer:
The incorrect statement for angiosperms is: **"Pollen tube enters the endosperm."**

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