Question:

Which one of the following statements is wrong?

Vegetative cell is larger than generative cell.

Pollen grains in some plants remain viable for months.

When pollen is shed at two-celled stage, double fertilization does not take place.

Intine is made up of cellulose and pectin.

Solution:

The correct option is D. When pollen is shed at two-celled stage, double fertilization does not take place. In this case, the generative cell divides into two male gametes only after reaching the embryo sac. Therefore, double fertilization cannot occur at the two-celled stage. Intine is made up of cellulose and pectin is a correct statement. The other options are also generally correct.