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Q. Keel is the characteristic feature of flower of

AIPMTAIPMT 2015Morphology of Flowering Plants

Solution:

The flowers of Family Papilionaceae have butterfly shaped corolla (papilionaceous corolla), Posterior or outermost petal is the largest and is called standard or vexillum, two lateral petals are similar and generally clawed, are called wings or alae and the two anterior petals called keel are fused enclosing stamens and carpels. This type of petal arrangement is found in bean, gram, pea, Indigofera etc.