Morphology of Flowering Plants Question 92
92. Keel is characteristic of the flowers of:
(a) Gulmohur
(c) Calotropis
(b) Cassia
(d) Bean
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Answer : d
Hints & Solutions
(d) 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 is called vexillum, the two largest petals are similar and have wings and the two anterior petals called keel are fused enclosing stamens and carpels.
