Answer:
(c) Autogamy is a method of
self-pollination in which the stigma of a flower receive pollens from the
anther of same flower. For autogamy both sex organs of achasmogamous flower
should mature at the same time.
As chasmogamous flowers open at
maturity, pollen release and stigma receptivity should be synchronized for the
process of autogamy.
In such flowers, the length of
anther and stigma plays secondary role in autogamy, e.g.,in case of protandry
(pollens mature early) and protogyny (stigma matures early) leads to
cross-pollination.
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