The arrangement of ovules within the ovary is known as placentation.What does the term placenta refer to? Name and draw various types of placentations in the flower as seen in T.S. or V.S.

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Solution

Placenta is a flattened, cushion like tissue on which one or more ovules are attached.The various types of placentation seen in the flowers are described in the following table.

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The arrangement of ovules within the ovary is known as placentation. What does the term placenta refer to? Draw various types of placentations in the flower as seen in TS and VS.

Q. Placentation refers to the arrangement of ovules in the ovary.

Q. The arrangement of ovules within the ovary is called placentation.

Q. When placenta forms a ridge along the ventral suture of the ovary and ovules are borne on the ridge forming two rows, the type of placentation is termed as:

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 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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