1. Tardigrade
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  3. Biology
  4. Assertion: The placentation in which the placenta forms a ridge along the ventral suture of ovary and ovules are borne on this ridge forming two rows is called parietal placentation. Reason: The marginal placentation has ovules developed on the inner wall of the ovary or on peripheral part.

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Q. Assertion : The placentation in which the placenta forms a ridge along the ventral suture of ovary and ovules are borne on this ridge forming two rows is called parietal placentation.
Reason : The marginal placentation has ovules developed on the inner wall of the ovary or on peripheral part.

Morphology of Flowering Plants

Solution:

In marginal placentation, one or two alternate rows of the ovules occur longitudinally along the ridge in the wall of the ovary in the area of fusion of its two margins or ventral suture. In parietal placentation two or more longitudinal placentae develop along the wall of a syncarpous or compound pistil.