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Sexual Reproduction in Flowering Plants — BIOLOGY STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYSexual Reproduction in Flowering Plants2 Marks
Question
Why are cleistogamous flowers invariably autogamous?
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Answer

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.

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