Question

Note on Flower by the following points
Pollination, reproduction and gamates

Answer 1

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• Flowers which use autogamy consist of

several adaptations in the structure of a

flower to facilitate this process. It occurs

without external pollinating agents.

• When flower opens to expose its sex

organs, it is called Chasmogamous.

• The contrivances (a condition that leads

to) favour self pollination are- Bisexuality,

Homogamy and Cleistogamy.

• Homogamy : When anther and stigma of

a flower become mature at the same time,

called homogamy.

• Some flowers are self pollinated

even before the opening of flower.

Such condition is called cleistogamy.

Underground flowers in some plants

which exhibit cleistogamy are never

opened e.g. Commelina benghalensis.

• Plants like Viola, Commelina can produce

both chasmogamous and cleistogamous

flowers on the same plant.

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Answer 2

Answer:

POLLINATION:THE TRANSFER OF POLLEN GRAIN FROM ANTHER TO STIGMA IS CALLED POLLINATION.

REPRODUCTION:THE PROCESS BY A YOUNG ONES PRODUCE A BABY OF OWN KINDS IS CALLED REPRODUCTION

GAMETES:IT IS A CELL WHICH IS USED DURING REPRODUCTION TO FORM ZYGOTE.