How many plants in the list given below have marginal placentation?
Mustard, Gram, Tulip, Asparagus, Arhar, Sun, nemp, Chilli, Colchicine, Onion, Moong, Pea, Tobacco, Lupin
As learnt in
Marginal Placenta -
In family leguninosae (pea,gram). placenta developing along the junction of two margins of the carpel in one - chambered ovary. It is called marginal placenta.
Gram, Arhar, Moong, pea, sun, nemp, lupin