What does the filiform apparatus do at the entrance into ovule?
It brings about opening of the pollen tube.
It guides pollen tube from a synergid to egg.
It helps in the entry of pollen tube into a synergid.
It prevents entry of more than one pollen tube into the embryo sac.
Definations / Explanation :
$1.$ Micropyle
$2.$ Chalaza
The number of embryo sac in an ovule is generally
Which of the following cells of embryo sac degenerate after fertilisation in angiosperms?
Synergids are which type ?
A Drusa type of embryo sac is