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Question

Standard petal in Papilionaceae is

A
Posterior and outermost
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B
Posterior and innermost
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C
Anterior and outermost
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D
Anterior andinnermost
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Solution

The correct option is A Posterior and outermost
Papilionaceae are easily recognised by their characteristic papilionaceous (butterfly-like) flowers. The flower is irregular (zygomorphic) and is made up of five petals; a banner or 'standard' petal, two wing petals, and two petals partially fused together to form a boat-shaped keel. The upper (posterior) petal is outermost and the two lower (anterior) petals often basally connate.

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