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Autogamy can occur in a chasmogamous flower if:
a. Pollen matures before the maturity of ovule
b. Ovules mature before the maturity of pollen
c. Both pollen and ovules mature simultaneously
d. Both anther and stigma are of equal lengths.
Answers (1)
The answer is the option (c) Both pollen and ovules mature simultaneously
Relative lengths of stigma and anther are not the only factors; time of maturity of pollens and ovules is also important in deciding the type of pollination. If pollens mature before ovules; they will become ineffective by the time ovule matures. Hence, the option (c) is the correct answer.
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