Science, asked by Viveksitaraman, 4 months ago

Define Inflorescence and Placentation,
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Answered by kochedaksh06
0

Answer:

INFLORESCENCE - DEFINITION

Inflorescence is the arrangement of flowers on the branch of the plant.

The main types of inflorescence are racemose and cymose inflorescence.

In racemose inflorescence the terminal bud continues to grow further resulting in orientation of youngest flower at the apex and oldest at the base.

In cymose inflorescence the terminal bud grows and dies resulting in the orientation of oldest flower at the apex and young flower at the base.

PLACENTATION - DEFINITION

concept

Placentation is the arrangement of ovules in the ovary of a plant. The given diagram shows the types of placentation such as basal, apical, parietal, marginal, axial and free central.

Marginal : One elongated palcenta is located on one side of ovary. Ovules are attached at the line of carpel's margin e.g., Legumes.

Axil : Carpels are folded inward with ovules placed along the central axis of ovary e.g., tomato.

Parietal : Ovules develop on the inner wall of the ovary e.g., Popy.

Free-central : Ovule develop on the central axis while the septa is absent e.g., Dianthus.

Basal : The ovules are arranged at the base of the ovary e.g., sunflowe.

Superficial : Ovules are attached entirely to the inner surface of the ovary e.g. Nymphea.

Answered by CopyThat
36

✯Inflorescence✯

It is a mode of arrangement of flowers on the axis of a plant. The flowers may be arranged in several different ways in different plants , this manner of arrangement is called as Inflorescence.

✯Placentation✯

It is the manner in which the ovules are arranged or attached to the wall of the ovary. Placenta is the tissue which attaches ovule to the wall of the ovary.

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