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How does pollination takes place in salvia. List any four adaptations required for such type of pollination

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In Salvia, there is a special mechanism called as lever mechanism or turn pipe mechanism. This favours the pollination method of entomophily where the pollinating agents are insects. When a pollinator probes a male stage flower for nectar, the lever present in the plant causes the stamens to move and the pollen to be deposited on the pollinator. When the pollinator withdraws from flower, the lever returns to their original position.

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