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In response to shortened day length and cool temperatures in the fall, many trees begin a...

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Biology

In response to shortened day length and cooltemperatures in the fall, many trees begin a period of senescencewhen the breakdown of chlorophyll exceeds chlorophyll production.The leaves of these trees appear to change to yellow and orange.Using your knowledge of photosynthetic pigments, explain the sourceof these yellow-orange hues.

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3.6 Ratings (640 Votes)
Carotenoids pigments are the source of the yelloworange hues During fall chlorophyll will breaks down and the leftover food in the leaf is transformed into the red colour through anthocyanin pigmentsDuring the growing season the plant replenishes chlorophyll so that the    See Answer
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