Question

Go through the following matches
Which of the following is correct?

(i) Cotton - Open aestivation
(ii) Lady's finger - Quincuncial aestivation
(iii) Cassia - Ascending imbricate aestivation
(iv) Bean - Descending imbricate aestivation

• A. (i), (iii) and (iv)
• B. (iii) and (iv)
• C. All are correct
• D. (ii), (iii) and (iv)

Answer 1

The correct option is B (iii) and (iv)

Cassia - Ascending imbricate aestivation

The aestivation seen in Cassia is ascending imbricate aestivation in which the posterior petal is overlapped by two lateral ones and the lateral ones are in turn overlapped by two anterior petals.


Bean - Descending imbricate aestivation

In descending imbricate or vexillary aestivation, the posterior petal overlaps the two lateral petals which in turn overlap the two anterior petals which remain fused. This aestivation is also known as papilionaceous aestivation and is the characteristic feature of the members of the Fabaceae or Leguminosae family such as beans.

Bean - Descendinga imbricate aestivation