Biology : PU-CET (U.G) 2018 Panjab University Entrance Exam With Answers

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21.

When Margins Of Petals In A Flower Overlap One Another But Not In A Particular Direction, The Aestivation Is Known As

A: Twisted
B: Valvate
C: Vaxillary
D: Imbricate

The answer is: D

Explanation

The correct option is D Imbricate

Aestivation is the arrangement of accessory floral organs (sepals or petals) in relation to one another in floral bud. It may be of valvate, twisted, vexillary or imbricate type. In imbricate aestivation, there is an irregular overlapping of petals and sepals by one another.