Integumented megasporangium is
Ovule
Pollen sac
Pollen grain
Embryo sac
Definations / Explanation :
$1.$ Egg apparatus
$2.$ filiform apparatus
Match the columns
Column $I$ | Column $II$ |
$(a)$ Sex cell of | $(1)$ Synergid cells embryo sac |
$(b)$ Synergid cell of | $(2)$ Antipodal cells sex reproduction of embryo sac |
$(c)$ Cell opposite to | $(3)$ Egg cells sex cell of embryo sac |
$(d)$ The central cell of | $(4)$Secondary nucleus embryo sac |
The number of nuclei migrating from each of the micropylar quartet and chalazal quartet to the centre of the normal embryo sac is
Generally number of integuments in the ovule of angiosperms and gymnosperms is
What does the filiform apparatus do at the entrance into ovule?