Match Column I with Column II

	Column I		Column II
A	Valvate aestivation	i	Petals or sepals of a whorl have each one with one margin overlapped and another one is underlapped
B	Twisted aestivation	ii	Margins of sepals or petals of a whorl overlap one another but not in any particular direction
C	Imbricate aestivation	iii	In the corolla, the largest posterior petal known as vexillum overlaps the two lateral wing petals or alae, the wings in return overlap the anterior fused petals known as keel petals or carina in a particular direction from posterior to anterior
D	Vexillary aestivation	iv	Petals or sepals of a whorl just touch each other but do not overlap.

Identify the correct answer from the options given below.

	A	B	C	D
1	iv	i	ii	iii
2	iv	iii	ii	i
3	ii	iv	i	iii
4	iv	ii	iii	i

Valvate aestivation - Petals or sepals of a whorl just touch each other but do not overlap.ex: Calyx and corolla of Calotropis, Calyx of pea, makoi, corolla of makoi.

Twisted aestivation - Petals or sepals of a whorl have each one with one margin overlapped and another one is underlapped ex. Corolla of lady's finger, cotton, china-rose, Datura

Imbricate aestivation - Margins of sepals or petals of a whorl overlap one another but not in any particular direction. eg. Corolla of Cassia and gulmohur.

Vexillary aestivation - In the corolla, the largest posterior petal known as vexillum overlaps the two lateral wing petals or alae, the wings in return overlap the anterior fused petals known as keel petals or carina in a particular direction from posterior to anterior. eg. Corolla of fabaceae members like pea, bean etc.