Question

Arrangement of sepals and petals in the bud condition is called as
A.Ptyxis
B.Placentation
C.Aestivation
D.Phyllotaxy

Answer 1

Hint: The study of leaf pacts, or phyllotaxy, contemplates not only the illustrative sequence of leaf configurations but also assumptions regarding the spur of such interpretations.

Complete answer:
Option A: Ptyxis is the arrangement of the particular leaf within a leaf blossom. Therefore, this is the incorrect option.
Option B: Placentation relates to the arrangement, variety and configuration, or pact of the placenta. Therefore, this is the incorrect option.
Option C: The manner of configuration of sepals or petals in flowery bud concerning the other partners of the same whorl is understood as aestivation. Therefore, this is the correct option.
Option D: Phyllotaxy is the interpretation of leaves on a plant stem. Therefore, this is the incorrect option.
The several varieties of leaf configurations are usually one of the simplest vegetative traits to utilize in enabling vascular seeds. This is particularly true when leaf configuration is incorporated with other traits, such as the existence or absence of petioles or the integrity of existing sessile or non-sessile. Other traits comprise the shape of the leaves and the impression of the margins, apices, and bases types.

Hence, the correct answer is option (C)

Note: The purpose of the arrangement of leaves (phyllotaxy) is to boost a plant’s capacity to endure photosynthesis by placing the leaves in such a direction as to maximize the ground area accessible to intercept sunlight. Leaves may be either caulescent or acaulescent.