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nectar
plant substance
nectar, sweet viscous secretion from the nectaries, or glands, in plant blossoms, stems, and leaves. Nectar is mainly a watery solution of the sugars fructose, glucose, and sucrose but also contains traces of proteins, salts, acids, and essential oils. Sugar content varies from 3 to 80 percent, depending upon such factors as plant species and soil and air conditions. The production of nectar as a food reward for animals is a classic example of coevolution. Nectar in flowers serves chiefly to attract pollinators, such as fruit-eating bats, hummingbirds, sunbirds, and insects. Nectaries are usually located at the base of the ...(100 of 305 words)