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Why is a sunflower yellow?

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asked Mar 26, 2016 in Science and Nature by anonymous
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Sunflowers are annual flowers that consist of thick, bright yellow petals. It is a Native American flower which is known as the sunflower because of the shape of it. The sunflower leaves and buds will follow the sun from east to west. But the fully blossomed flower doesn't do it. Hence, the popular belief that the sunflower follows the sun's direction throughout the day is not 100% correct. Yellow is the only wavelength of light that the sunflower doesn't absorb but reflects back. This is why the sunflower looks yellow to us. Colored flowers are usually colored for a reason such as to attract insects and birds to them. Pollination is the purpose of attracting these birds and insects to the flower.




answered Mar 26, 2016 by nilupa1973 (35,290 points)

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