Answered

Find out the correctly matched pairs as to aestivation of petals:

(i) Valvate-Calotropis
(ii) Twisted-Bean
(iii) Imbricate - Cassia
(iv) Vexillary-China Rose.

A. i and ii
B. iii and iv
C. i and iii
D. ii and iii
E. ii and iv