Question

Why some flowers bloom only at night?

Answer 1

Some flowers open at night and are wilted by dawn. Flowers which are white and fragrant are adapted to attract nocturnal pollinators such as bats and moths.

So thats why they bloom at night.

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Answer 2

Heyaa folk,
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➞ For those flowers, which are white in colour and are fragrant, pollination is of unique challenge.

➞ For attracting moths or bats for the pollination, they bloom only at night.
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Hope it helps u :)