Which one of the following statements is wrong

Options

A. when polen is shed at two celled stage double fertizlation does not take place
B. vegetative cell is larger than generative cell
C. pollen grains in some plants remains viable for months
D. intine is made up of cellulose and pectin

Answer

To determine which statement is wrong, let's analyze each statement provided in the question:

1. **Statement 1**: "When pollen is shed at the two cell stage, double fertilization does not take place."
- This statement is **wrong**. In angiosperms, even when pollen is shed at the two-cell stage, double fertilization can still occur. This is a characteristic feature of flowering plants where one sperm fertilizes the egg, and the other fuses with the polar nuclei to form the endosperm.

2. **Statement 2**: "The vegetative cell is larger than the generative cell."
- This statement is **correct**. The vegetative cell is indeed larger than the generative cell. The vegetative cell develops into the pollen tube, while the generative cell divides to form two sperm cells.

3. **Statement 3**: "The pollen grain in some plants remains viable for months."
- This statement is **correct**. Pollen grains can remain viable for extended periods, sometimes for months, due to their protective outer layer and enzymes that help in maintaining their viability.

4. **Statement 4**: "Entine is made up of cellulose and pectin."
- This statement is **correct**. The entine, which is the inner layer of the pollen wall, is composed of cellulose and pectin.

Based on the analysis, the **wrong statement** is the first one: "When pollen is shed at the two cell stage, double fertilization does not take place."