Biology, asked by shravika111, 11 months ago

define perianth , astivation , placentation in plants​

Answers

Answered by Anonymous
1

perianth :-

The floral envelope or the outer part of the flower in which the segments are divisible into calyx and corolla.

Aestivation :-

The term ‘aestivation’ refers to the mode in which sepals or petals are arranged in a floral bud with respect to other floral members. There are four types of aestivation in plants i.e., valvate, twisted, imbricate, and vexillary.

Placentation :-

The term ‘placentation’ refers to the arrangement of ovules within the ovary of a flower. It is primarily of five types, namely marginal, basal, parietal, axile, and free central.

Answered by Anonymous
1

hello mate!!

Perianth-it is the outer part of the flower.

Astivation-it is the arrangement of petals and sepals in flower bud before it opens.

Placentation in plants-it is the arrangement of ovules in the ovary.

hope it helps!!

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