A linear tetrad of $4$ cells lying in an axial row is formed during the development of
Embryo sac
Pollen grains
Ovary
Ovule
A Drusa type of embryo sac is
The cells in embryo sac which act as haustoria are
Generally how many megaspores take part in the development of female gametophyte
The nutritive tissue present in the ovule is called
Delete the odd one.