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  4. The given figure represents vexillary aestivation. Select the suitable labels for P, Q, and R. <img class=img-fluid question-image alt=image src=https://cdn.tardigrade.in/img/question/biology/53b133462d0244fbafee38fd5774ef49-.jpeg /> P Q R (a) Standard Wing Ala (b) Standard Keel Wing (c) Wing Keel Carina (d) Standard Ala Carina

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Q. The given figure represents vexillary aestivation. Select the suitable labels for P, Q, and R.
image
P Q R
(a) Standard Wing Ala
(b) Standard Keel Wing
(c) Wing Keel Carina
(d) Standard Ala Carina

Morphology of Flowering Plants

Solution:

In vexillary/descending imbricate aestivation, the posterior petal (standard) overlaps the two lateral petals (wings or alae) and the latter overlap the two anterior petals (keel or carina). It is also called papilionaceous corolla and is found in members of Family Papilionaceae.