How many plants among Indigofera, Sesbania, Salvia, Allium, Aloe, mustard, groundnut, radish, gram and turnip have stamens with different lengths in their flowers?

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Six

Three

Five

Four

answer is B.

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Detailed Solution

A total of four plants have stamens of variable lengths in its fl owers. Lamiaceae plants like Salvia (has two stamens) and Brassicaceae plants like radish, mustard and turnip have stamens of different lengths (4 tall and 2 short stamens).
Indigofera, Sesbania and gram a member of Fabaceae have 10 stamens of equal length in each fl ower in diadelphy.
Allium and Aloe a member of Liliaceae have six stamens of equal length in epiphyllous condition in each fl ower.
Groundnut, a member of Fabaceae has 10 stamens of same length in each fl ower.

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