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| 1. |
Describe various type of placentation with example of each |
| Answer» Placentation :- the arrangement of the ovules within the ovary is known as placentation.placentation are of different types:-1) Marginal2) Axile3) parietal4) free central5) basalMarginal placentation :- In this, the placenta forms a ridge along the ventral suture of the ovary and ovules are borne on the ridge.e.g --> peaAxile placentation :- In this , the placenta is Axile and ovules are attached to it .e g- China rose , tomato , lemonParietal placentation :- in this , the ovules develop on inner wall of the ovary or on peripheral part.e.g -> mustard , ArgemoneFree central placentation :- In this , the ovules are borne on central axis and septa are absent.e.g-> Dianthus and Primrose.basal placentation :- in this , placenta develop at base of ovary & single ovule is attached to it.e g -> sunflower , marigold. | |