Question

Leaves other than green colour perform photosynthesis.

How will you test it?



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Answer 1

Chlorophyll absorbs red or blue light and reflects green light because of which leaves appear to be green in colour. Not only these plants also contain many different pigments which are generally masked by the chlorophyll. Example –Carotenoids.

OR

So generally, plants with non-green leaves will have chlorophyll and photosynthesis, unless they happen to be one of the species of parasitic plants that eat other plants for energy.03-May-2020

OR

The most abundant pigment is chlorophyll, which we see as the green color of summer leaves. But the light from the sun is basically what is called white light. ... That means that the leaves use colors other than green to work in the production of sugars. In fact, chlorophyll absorbs mostly blue and some orange light

Answer 2

Experiment to prove leaves other than green in colour also undergo photosynthesis:

Take some plants, one with green leaves and other with some other colour.

As we know that plants undergoing photosynthesis have stored carbohydrates in them.

Now performing iodine test will prove that leaves other than green in colour also have stored carbohydrates which in turn will prove that leaves other than green in colour also undergo photosynthesis because iodine in presence of starch turns into blue black colour.

But if the leaf does not turn blue black on addition of iodine then it proves that the leaf belongs to a plant that does not undergo photosynthesis

Such plants containing non-green leaves but still exhibiting photosynthesis contains non-green pigments known as anthocyanins and carotenoids in addition to chlorophylls and this pigment anthocyanins are present in such large amounts that they cover up the green due to chlorophyll but the covered up chlorophyll continues to perform its function of carrying photosynthesis.

hope it helps you