DENDROLOGY AND SOCIETY
MORPHOLOGY AND IDENTIFICATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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marginal
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basal
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free central
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axile
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Detailed explanation-1: -In Basal placentation, the ovary is unilocular. It bears a single placenta positioned at the base of the ovary and a single ovule is attached to it. The pistil or carpel may be monocarpellary or syncarpous. E.g. Ranunculus, Sunflower, Marigold etc.
Detailed explanation-2: -The single basal ovule of the sedge is an example of basal placenta. Basal placentation can be found in the Asteraceae family.
Detailed explanation-3: -An ovary may have one placenta or more than one placenta. And in basal placentation, there is a single placenta that is present at the base of the ovary. Also, only a single ovule is attached to the ovary. Hence, in basal placentation, the ovary is unilocular.
Detailed explanation-4: -In basal placentation ovules are attached to the base of the ovary, and in parietal placentation the placentae are located directly on the ovary wall or on its extensions.