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Question
A flower with five unequal petals has largest posterior petal, two lateral slightly small petals and two anterior petals partially fused to form a boat-shaed structure. Which is not correct for such a flower?
A flower with five unequal petals has largest posterior petal, two lateral slightly small petals and two anterior petals partially fused to form a boat-shaed structure. Which is not correct for such a flower?
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Solution
The correct option is B Many carpels
The flowers belonging to the Papilionaceae family has vexillary type of aestivation in which, there is one large posteriorly placed petal called vexillum that overlaps the lateral petals called wings. These wings overlap the anterior petals that are fused to form a boat like structure called keel or carina. This type of aestivation is also called descending imbricate. These flowers also have an odd anterior sepal. They show piston mechanism of pollination. Their gynoecium is one carpel, it is monocarpellary, superior, unilocular with marginal placentation. For example, Pea, Dalbergia etc.Hence, the correct answer is 'Many carpels'
The flowers belonging to the Papilionaceae family has vexillary type of aestivation in which, there is one large posteriorly placed petal called vexillum that overlaps the lateral petals called wings. These wings overlap the anterior petals that are fused to form a boat like structure called keel or carina. This type of aestivation is also called descending imbricate. These flowers also have an odd anterior sepal. They show piston mechanism of pollination. Their gynoecium is one carpel, it is monocarpellary, superior, unilocular with marginal placentation. For example, Pea, Dalbergia etc.
Hence, the correct answer is 'Many carpels'
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