Daisy flower with invisible nectar guides

Daisy flower with invisible nectar guides

B539/0045 Rights Managed

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Credit: LEONARD LESSIN/SCIENCE PHOTO LIBRARY

Caption: Daisy. (image 1 of 2). View of a daisy (family: compositae) flower with invisible nectar guides on its yellow petals. Here, in normal light, the nectar guides cannot be seen by the human eye. Nectar guides serve as a visual signal to attract bees to the flower nectaries. They can be seen in the ultraviolet light range. The eye of a bee is sensitive to ultraviolet light, and thus the bee detects these nectar guides as prominent dark patches on the petals leading to the centre of the flower. While the bee is feeding on nectar, it disperses pollen and so ensures that the flower is pollinated. See B539/046 for a view of this daisy flower under ultraviolet light.

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Keywords: angiosperm, angiosperms, asteraceae, botany, compositae, daisy, flower, honey guide, nature, nectar guide, petal, plant, pollination

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