Which of these is an example for a zygomorphic flower with imbricate aestivation?
Zygomorphic flowers with imbricate aestivation
Zygomorphic flowers are those flowers that can be divided into two equal halves (right and left) only along a single plane of symmetry passing through the floral centre.
The example of a zygomorphic flower with imbricate aestivation is Cassia.
In these flowers, the overlaps of the margins of adjacent sepals or petals are not in any definite direction, rather occur randomly.
Final answer
b. Cassia