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Solution


Q.

When the margins of sepals or petals overlap one another without any particular direction, the condition is termed as         [2014]
1 vexillary  
2 imbricate  
3 twisted  
4 valvate  

Ans.

(2)

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