Yann C asked in Science & MathematicsBotany · 1 decade ago

how do trees with red leaves photosynthesise?

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  • Anonymous
    1 decade ago
    Favourite answer

    The green colour of chlorophyll is simply being masked by one of a number of other pigments not involved in photosynthesis, including flavins and carotenoids, which are present in abundance in certain species of plant.

    Carotenoids are yellow and orange (they give carrots their orange colour, hence their name) or orange/red in colour, so probably contribute to the red colour of leaves, but the richness of the red colour is provided by flavins. These are a group of photoreceptor chemicals which absorb blue wavelengths of light from the spectrum of wavelengths present in white light and emit all other wavelengths, making the pigment appear red. This blue light controls several reactions in the plant, including the biosynthesis of pigments, carbohydrate and protein metabolism and photomovement (growth movements of plant shoots and roots in response to directional light, gravity, and so on).

    The assumption that chlorophyll is green is a correct one, but leaves have a number of colour pigments in them, hence when the chlorophyll decomposes in autumn, they turn a variety of other colours. Very strong colours mask the green of chlorophyll, but photosynthesis still takes place (red, brown and even blue seaweeds photosynthesise). Trees such as you describe are "sports", nursery creations grown for show. They are less efficient and in the natural world would be very scarce as trees with green leaves would easily out-compete them.

  • Anonymous
    1 decade ago

    In the spring when the leaves start to grow they will be green showing that they contain chlorophyll. It is only later that take on a red colour.

  • 1 decade ago

    Don't be fooled, although the leaves are red coloured, they still contain chlophyll, which is green, and they are also green, but you do not notice as the red colour is strong.

    Try looking at a red leaf under green light, if it is illuminated, that's because the whole colour does contain green.

  • Anonymous
    1 decade ago

    Exactly the same way to my knowledge, just much slower which is why trees with red leaves tend to be a lot smaller than those with green.

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  • 1 decade ago

    red leaves still have chlorophyll in them

    pigmentation of leaves varies and doesnt mean that the leaves are not photosynthesising

  • 4 years ago

    Fruits. Bananas are my favorite. btw did you know that tomatoes are the #1 selling fresh fruit? true beans

  • 4 years ago

    fruit grows on forest or vines and fruit and vegetables grow in the land.

  • 1 decade ago

    In exactly the same way - its just that they have an extra chemical in them that gives them the red colour - but they still contain chloryphil to allow to the phorosynthesize.

  • koers
    Lv 4
    4 years ago

    i think of that they have got the two have one extra purple pigment that overides the fairway chloroplast or that the chloroplast have diverse pigment. The dark shade helps it srvive in an fairly heat climate. wish this helps.

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