what is meant by exine layer 630/0'
Sexual Reproduction in Fl...
microsporangium. It provides
nourishment to the developing pollen
grains. During microsporogenesis, the
cells of tapetum produce various
enzymes, hormones, amino acids, and
other nutritious material required for the
. It also
f e pollen
Have a doubt?
ASK OUR EXPERT
Exine (also called exospore) is the external structural layer of a mature pollen grain. It is a tough resistant outer cuticularized wall composed largely of sporopollenin (a chemically inert biopolymer).