Sexual Reproduction In Flowering Plants Ques 50
50. 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 the 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 is responsible for the absorption of food from the nucleus.
BETA
