free-central placentation
Quick Summary
In botany, free-central placentation refers to an arrangement of ovules within a plant's ovary where the placentas are located on a central column of tissue. This central column is not connected by partitions to the ovary wall. This type of placentation is derived from axile placentation, where ovules are arranged along the central axis of the ovary. The placentation, or the way ovules are arranged, is often significant for classifying plants.12
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…central axis of the ovary; free central, derived from the axile, with a central column bearing the ovules; basal, with ovules positioned on a low column at the base of the ovary; or laminar, with ovules scattered over the inner surfaces of carpels.
Read More…central axis of the ovary; free central, derived from the axile, with a central column bearing the ovules; basal, with ovules positioned on a low column at the base of the ovary; or laminar, with ovules scattered over the inner surfaces of carpels.
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angiospermSeedsFree-central placentation resembles axile placentation; however, the column is not connected by partitions to the ovary wall, and thus no locules are formed. In basal placentation ovules are attached to the base of the ovary, and in parietal placentation the placentae are located directly on…
Read MoreFree-central placentation resembles axile placentation; however, the column is not connected by partitions to the ovary wall, and thus no locules are formed. In basal placentation ovules are attached to the base of the ovary, and in parietal placentation the placentae are located directly on…
Read More