Keel is characteristic of the flowers of (a) gulmohur
Keel is characteristic of the flowers of
(a) gulmohur
(b) Cassia
(c) Calotropis
(d) bean
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Correct option (d) bean
Explanation:
In bean-family the two-in-one petal is called the keel, like the keel of a boat. Bean blossoms with this configuration are said to be papilionaceous.
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