Cleistogamous flowers are invariably autogamous becauseThese flowers do not open at all-There is no chance of cross-pollen-These flowers have exposed anthers and stigma-These flowers are wind pollinated-

The correct option is A These flowers do not open at all.Cleistogamous flowers mean #160;anther and stigma lie close each other in the closed flower. They ar ...

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Standard IX

Biology

Ornithophily

Cleistogamous...

Question

Cleistogamous flowers are invariably autogamous because

These flowers do not open at all.

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There is no chance of cross-pollen.

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These flowers have exposed anthers and stigma.

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These flowers are wind pollinated.

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Solution

The correct option is A These flowers do not open at all.
Cleistogamous flowers mean anther and stigma lie close each other in the closed flower. They are bisexual which cannot open even at maturity and thus self-pollination occurs. As they are closed consider as invariable autogamous.
Thus, the correct answer is A.

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Similar questions

Cleistogamous flowers are invariably autogenous as there is no chance of cross pollen landing on the stigma. Justify the statement

Q. Cleistogamous flowers are self-pollinated because [1 mark]
(A) they are bisexual flowers which do not open at all.
(B) they are bisexual and open flowers.
(C) they are unisexual.
(D) their stigma matures before the anthers dehisce.

Q. Assertion: Cleistogamous flowers produce assured seed-set even in the absence of pollinators.
Reason : Cleistogamous flowers have exposed anthers and stigma.

Q. Assertion: Cleistogamous flowers produce seeds even in the absence of pollinators.
Reason: Cleistogamous flowers have exposed anthers and stigma.
[1 mark]

Q. It is seen that wind-pollinated flowers have either small petals or no petals at all, and that their anthers and pistils are exposed. How does this help the flowers?

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