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How many plants in the list given below have marginal placentation?
Mustard, Gram, Tulip, Asparagus, Arhar, Sun hemp, Chilli, Colchicine, Onion, Moong, Pea, Tobacco, Lupin
Mustard, Gram, Tulip, Asparagus, Arhar, Sun hemp, Chilli, Colchicine, Onion, Moong, Pea, Tobacco, Lupin
A
Three
B
Four
C
Five
D
Six
Detailed Solution
Marginal placentation (ovules borne on a ridge along the ventral suture of a monocarpellary ovary) is the characteristic of the family Fabaceae (legumes).
Members of Fabaceae in the list: Gram, Arhar, Sun hemp, Moong, Pea and Lupin, which makes six plants.
Mustard (Brassicaceae) has parietal placentation.
Tulip, Asparagus, Colchicine (the plant $Colchicum$) and Onion belong to Liliaceae and have axile placentation.
Chilli and Tobacco belong to Solanaceae and have axile placentation.
So six plants have marginal placentation.
Members of Fabaceae in the list: Gram, Arhar, Sun hemp, Moong, Pea and Lupin, which makes six plants.
Mustard (Brassicaceae) has parietal placentation.
Tulip, Asparagus, Colchicine (the plant $Colchicum$) and Onion belong to Liliaceae and have axile placentation.
Chilli and Tobacco belong to Solanaceae and have axile placentation.
So six plants have marginal placentation.