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In unilocular ovary with a single ovule the placentation is
A
Axile
B
Marginal
C
Basal
D
Free Central
Detailed Solution
In basal placentation the placenta develops at the base of the ovary and a single ovule is attached to it; the ovary is unilocular. Examples: sunflower and marigold.
In axile placentation the ovules are attached to a central axis in a multilocular ovary (china rose, tomato, lemon).
In marginal placentation the ovules are borne in rows on a ridge along the ventral suture (pea).
In free central placentation many ovules are borne on a central axis without septa ($Dianthus$, primrose).
Hence a unilocular ovary with a single ovule has basal placentation.
In axile placentation the ovules are attached to a central axis in a multilocular ovary (china rose, tomato, lemon).
In marginal placentation the ovules are borne in rows on a ridge along the ventral suture (pea).
In free central placentation many ovules are borne on a central axis without septa ($Dianthus$, primrose).
Hence a unilocular ovary with a single ovule has basal placentation.