How many plants in the list given below have marginal placentation? Mustard, Gram, Tulip, Asparagus, Arhar, Sun hemp, Chilli, Colchicum, Onion, Moong, Pea, Tobacco, Lupin

Step-by-step solution

Placentation is the arrangement of the ovules in the ovary and their attachment to it. Placentation are of various type in the angiosperms - marginal, axile, central, parietal, basal, and free central. In marginal placentation, ovules are attached to the ridge formed on the ventral suture of the ovary. It occurs in the monocarpellary and unilocular ovary. Gram, Arhar, Sun Hemp, Moong, Lupin and Pea the marginal placentation. Mustard has parietal placentation. Axile placentation is shown by Tulip, Asparagus, Colchic