STRUCTURAL ORGANISTION OF PLANTS AND ANIMALS
MORPHOLOGY OF FLOWERING PLANTS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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apical placentation
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parietal placentation
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marginal placentation
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superficial placentation
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Detailed explanation-1: -The ovules are borne on placentae, which develop all around the inner surface of the partition wall eg. Nymphaeaceae. Therefore, the correct answer is option B-Parietal placentation.
Detailed explanation-2: -Hence, the correct answer is ‘Parietal Placentation’.
Detailed explanation-3: -In parietal placentation, placenta develops along the fused margins of adjacent carpels on the parietal wall of the ovary. It occurs in a syncarpous bi or multicarpellary pistil in which the ovary is unilocular, i.e., has a single chamber. The number of placenta is equal to the number of carpels that have been fused.
Detailed explanation-4: -Definitions of parietal placentation. where ovules develop on the wall or slight outgrowths of the wall forming broken partitions within a compound ovary. type of: placentation. arrangement of the ovules in the placenta and of the placentas in the ovary.
Detailed explanation-5: -Basal placentation is the type of placentation characterised by the presence of ovules at the base of the ovary. It is found in bicarpellary or multicarpellary and unilocular ovary.