Generative cell was destroyed by laser but a normal pollen tube was still formed because

Options

A. vegetative cell is not damaged
B. contents of killed generative cell stimulate pollen growth
C. laser beam stimulates growth of pollen tube
D. the region of emergence of pollen tube is not harmed

Answer

A

Explanation

Pollen grain or microspore divides mitotically forming a larger tube or vegetative cell and a small generative cell. Since, vegetative cell gives rise to pollen tube and generative cell divides to form two male gametes, thus if a generative cell is destroyed by laser, a normal pollen tube will still form through the vegetative cell which is undestroyed.