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Question
Placentation, in which ovules develop on the inner wall of the ovary or in peripheral part, is:
Placentation, in which ovules develop on the inner wall of the ovary or in peripheral part, is:
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Solution
The correct option is D parietal
Placenta are soft cushion-like tissues to which the ovules are attached. The arrangement of ovules within the ovary is known as placentation.
The placentation is of different types, i.e., marginal, axile, parietal, basal and free central.
Parietal placentation: The ovules develop on the inner wall of the ovary or on the peripheral part. e.g., mustard.
Axile placentation: The ovary is multilocular and the ovules are borne on the central axis as in China rose, tomato, etc.
Free Central placentation: The ovules are present on the central axis of the ovary and septa is absent so the ovary is unilocular, as in Dianthus and Primrose.
Basal placentation: The placenta develops at the base of the ovary and a single ovule is attached to it, as in sunflower.
Placenta are soft cushion-like tissues to which the ovules are attached. The arrangement of ovules within the ovary is known as placentation.
The placentation is of different types, i.e., marginal, axile, parietal, basal and free central.
Parietal placentation: The ovules develop on the inner wall of the ovary or on the peripheral part. e.g., mustard.
Axile placentation: The ovary is multilocular and the ovules are borne on the central axis as in China rose, tomato, etc.
Free Central placentation: The ovules are present on the central axis of the ovary and septa is absent so the ovary is unilocular, as in Dianthus and Primrose.
Basal placentation: The placenta develops at the base of the ovary and a single ovule is attached to it, as in sunflower.
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