In plants like mint and jasmine, a selender lateral branch arises from the base of the main axis and after growing aerially for sometimes, arch downwards to touch the ground. This slender branch is called

Corolla with four diagonally arranged petals is

The following diagrams represent the type of placentation in ovary. Identify the correct combination of labelling

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Basal placentation is found in

Which type of placentation is formed in plants which having vaxillary aestivation ?

Choose correct pair.