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  4. Keel petal is a characteristic feature of the flowers of:

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Q. Keel petal is a characteristic feature of the flowers of:

NTA AbhyasNTA Abhyas 2022

Solution:

The keel is the characteristic of the flowers of family Papilionaceae, for example, bean, gram, pea, etc.
The flowers of this family have butterfly-shaped corolla. The outermost petals of these flowers are the largest (and called as vexillum); the two largest petals are similar and have wings, and the two anterior petals called keel are fused enclosing stamens and carpels.