Question

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What is aestivation? Describe twisted and imbricate aestivation with one example each.
Carries 3 marks
Class 11 cbse

Answer 1

The arrangement of petals and sepals in a flower bud before it opens is called aestivation.

The arrangement of petals or sepals on which they are overlap each other is called twisted aestivation.

EX:- Hibiscus( China rose).

One petal or sepal that is overlapped with internal of both marginsis called imbricate aestivation.

EX:- Gulmohar,cassia

Answer 2

HLO MATE HERE U GO.

The mode of arrangement of sepals or petals in a floral bud is known as aestivation.

Imbricate aestivation : The margins of sepals or petals overlap one another but not in any particular direction.

Ex: cassia , Gulmohur.

Twisted aestivation : Margin of one appendage overlaps that of the next one and so on

Ex : cirola of hibiscus , ladyś finger