Write the function of the pollen grain, stigma,male germ-cell,pollen tube,ovary and female germ-cell in germination of pollen on stigma
Answers
When the pollen grains the anther of a flower are transferred to the stigma of the same flower or another flower on the same plant it is called self pollination.
Stigma is a part of carpel the top of carpel is called stigma stigma is for receiving the pollen grain from the anther of stamen during pollination.
Stigma is sticky show that pollen can stick to it.
Male germ cell.
Stamen is the male reproductive organ of the plant stomach produce pollen grain is also known as male germ cell.
Pollen tube.
when a pollen green falls on the stigma of the carpel it brusts open and grows a pollen tube downwards through the style towards the female gamete in the ovary.
Female germ cell
the pollen grains from the anther of this flower stick to its body and when this insect now seats another flower of anther Shimla plant then the pollen grains sticking to its body are transferred to the stigma of this second flower in this way the insect transfer the pollen grain from the anther of flower in one plant to stigma of flower in another plant and cross pollination is done.
after a pollen grain fall and spring by the next step is fertilization fertilization occur when the male chemical present in pollen grain join with the female gametes for a present in ovule.
# Adarsh.
