NEET 2008 Biology question

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

(1)It guides pollen tube from a synergid to egg
(2)It helps in the entry of pollen tube into a synergidCorrect
(3)It prevents entry of more than one pollen tube into the embryosac
(4)It brings about opening of the pollen tube

Answer: (2)

Solution

The filiform apparatus is a mass of finger-like cellular thickenings at the micropylar tip of the two synergids. It secretes chemical attractants that guide the pollen tube through the micropyle and help it enter the synergid.

See the full step-by-step solution

Create a free account to read the complete working, and practise questions like this in a timed test.

Create a free account

Question ID VK-090096