Sexual Reproduction in Flowering Plants Question 40

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

[2008]

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

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

(c) It brings about opening of the pollen tube

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

Show Answer

Answer : a

Hints & Solutions

(a) Filiform apparatus helps in the entry of pollen tube into a synergid in ovule. Filiform apparatus is in form of finger like projection comprising a core of micro fibrils enclosed in a sheath. The filiform apparatus resembles transfer cells" meant for short distance movement of metabolites. The filiform apparatus responsible for the absorption of food from the nucleus.