Question

Function of filiform apparatus is to

• A. recognize the suitable pollen at stigma
• B. stimulate division of generative cell
• C. produce nectar
• D. guide the entry of pollen tube.

Answer 1

Answer: (D)

In the ovule, the pollen tube is attracted by secretions of synergids. Usually the pollen tube enters the embryo sac by passing into one of the two synergids and is guided by the filiform apparatus of the synergids in their movement. Pollen tube then breaks open and releases its contents in the embryo sac. Antipodals and synergids later degenerate.