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When the margins of sepals or petals overlap one another without any particular direction, the condition is termed as:

1. Vexillary
2. Imbricate
3. Twisted
4. Valvate

Correct answer: Imbricate

Solution

Imbricate aestivation means the margins of sepals or petals overlap one another irregularly, with no consistent direction. This differs from twisted, where overlap follows a regular one-way pattern, and valvate, where edges just meet without overlapping.

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