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09/12/2021 11:30 am
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Why are cleistogamous flowers invariably autogamous?
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09/12/2021 11:31 am
Cleistogamous flowers are the bisexual flowers which do not open at all even at maturity and their stamens and stigma are never exposed for xenogamy or geitonogamy; the anthers and stigma lie close to each other and self pollination is effected easily.