NEET BIOLOGY

Detailed explanation-1: -Aestivation is the mode of arrangement of sepals or petals with respect to the other members of the same whorl. In a certain type of aestivation, sepals or petals are arranged without overlap and the margins of the petals touch one another.

Detailed explanation-2: -The arrangement of floral leaves in a floral bud is known as aestivation. It occurs in different floral parts like calyx and corolla. The arrangement of leaves in a vegetative bud is known as prefoliation. The folding of each individual leaf in a bud is known as ptyxis.

Detailed explanation-3: -So, the correct answer is ‘Twisted’

Detailed explanation-4: -In this arrangement, the margins of two petals are inside and two petals are outside, and one petal’s margin is both inside and outside. The examples of flowers that depict this type of aestivation are Cassia and Delonix.

Detailed explanation-5: -Aestivation (Latin: aestas (summer); also spelled estivation in American English) is a state of animal dormancy, similar to hibernation, although taking place in the summer rather than the winter.