What does the filiform apparatus do at the entrance into ovule ? (1) It brings about opening of the pollen tube (2) It guides pollen tube from a synergid to egg (3) It helps in the entry of pollen tube into a synergid (4) It prevents entry of more than one pollen tube into the embryo sac

Question:

What does the filiform apparatus do at the entrance into ovule ? 

(1) It brings about opening of the pollen tube 

(2) It guides pollen tube from a synergid to egg 

(3) It helps in the entry of pollen tube into a synergid 

(4) It prevents entry of more than one pollen tube into the embryo sac

Answer: option (3) "It helps in the entry of pollen tube into a synergid "

Explanation:

Filiform system assists in entering a pollen tube into an ovule synergy. The filiform device is a finger-like projection consisting of an enclosed core of microfibrils in a sheath. The filiform apparatus resembles the transfer cells meaning the movement of metabolites at short distances. The filiform system which extracts food from the nucleus. 

Hence, option (3) "It helps in the entry of pollen tube into a synergid " is the correct answer.