Pollination does not guarantee the transfer of the right type of pollen (compatible pollen). If the pollen is of the wrong type (incompatible type), then the pistil rejects the pollen by preventing

Options

A. Pollen germination on the stigma
B. Pollen tube growth in the style
C. Double fertilisation
D. Both A and B

Answer

D

Explanation

Pollination does not guarantee the transfer of the right type of pollen (compatible pollen). If the pollen is of the wrong type (incompatible type), then the pistil rejects the pollen by preventing pollen germination on the stigma or pollen tube growth in the style.