STRUCTURAL ORGANISTION OF PLANTS AND ANIMALS
MORPHOLOGY OF FLOWERING PLANTS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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pappus
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vexillum
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corona
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carina
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Detailed explanation-1: -This type of aestivation can be seen in the Fabaceae family. Therefore, we can conclude that the standard petal of papilionaceous corolla is called “Vexillum”.
Detailed explanation-2: -The correct option is B Vexillum. The standard petal of papilionaceous corolla is also called as vexillum.
Detailed explanation-3: -The vexillum or standard, the outermost posterior petal, is large, two lateral petals are known as the wings or alae, and the two anterior and innermost petals are fused to form a boat-shaped structure known as the keel or carina in vexillary aestivation. As a result, vexillum is found in the Papilionaceae family.
Detailed explanation-4: -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.
Detailed explanation-5: -So, the correct answer is ‘Papilionaceae’.