NURSING EXAM QUESTIONS
NUTRITION
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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chlorophyll
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xanthophyll
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carotene
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lycoprene
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Detailed explanation-1: -The leaves that are deep red, violet or brown in color have those colors due to the presence of carotenoid or xanthophyll pigments. But all these leaves also possess the green pigment called chlorophyll, which is why they can perform photosynthesis.
Detailed explanation-2: -Red and other coloured leaves also have chlorophyll in them but in less quantity. Hence, they appear colorful. And able to prepare food like green plants.
Detailed explanation-3: -Anthocyanins. A third pigment, or class of pigments, that occur in leaves are the anthocyanins. Anthocyanins absorb blue, blue-green, and green light. Therefore, the light reflected by leaves containing anthocyanins appears red.
Detailed explanation-4: -First, because anthocyanins are responsible for the colors of fruits and flowers as well as of leaves, it was natural to concentrate on pigmentation in the former economi-cally important organs, for which the function of anthocyanin seems obvi-ous-to attract animals for pollination and seed dispersal.