Mention two strategies evolved to prevent self-pollination in flowers.
Self-pollination involves the transfer of pollen from the stamen to the pistil
of the same flower. Two strategies that have evolved to prevent self-pollination
in flowers are as follows:
certain plants, the stigma of the flower hasthecapability to prevent the
germination of pollen grains and hence, prevent the growth of the pollen tube.It
is a genetic mechanism to prevent self-pollination called self-
incompatibility. Incompatibility may be between individuals of the same
species or between individuals of different species. Thus, incompatibility
some plants, the gynoecium matures before the androecium or vice-versa. This
phenomenon is known as protogyny or protandry respectively.
This prevents the pollen from coming in contact with the stigma of the same