First slide

Pre-fertilisation : Structures and Events

Question

The filiform apparatus of synergids

Easy

A

play an important role in guiding the pollen rube into the synergid.
B

help in the bursting open of pollen tube.
C

prevents pollen tube from bursting.
D

is diploid.

Solution

The synergids have fingers like structures (special cellular thickenings) at the micropylar tip called filiform apparatus. With the help of these structures, synergids absorb food from the nucellus and transfer it to the embryo sac. Filiform apparatus also secrete chemicals which attract and guide the pollen tube into the synergid.

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