Your child is taught that only green plants contain chlorophyll, which is the catalyst for photosynthesis to happen. So, green plants can carry out photosynthesis to make food.

So, what about plants with non-green leaves, such as red or orange? The easy answer is that these plants can still carry out photosynthesis as long as there is hidden chlorophyll lying below the green pigment.

But in actual science, it is a lot more complex than that. You can see a green leaf because green light is reflected from the leaf; red and blue are absorbed by the green pigment, chlorophyll. Plants actually contain other pigments that absorb other colours, but these are often masked by chlorophyll. A good example is the other pigment, carotenoids. In autumn, chlorophyll in plants becomes much lesser because there is less sunlight and carotenoids become more prevalent. That explains why you see less or no green leaves but more red and orange ones, but that doesn't change the fact that those red and orange plants are still carrying out photosynthesis. Fascinating, isn't it?

Want to learn something even more mind blowing, so much so that it will even change the entire belief you are interpreting how you see everyday things in their splendid colour?

Picture this… closely. You see a green leaf because green light is reflected from the leaf; red, blue and every other colour are absorbed by the chlorophyll. Now you remember the physics lesson that taught you that a green object absorbs green light?

So, back to our leaf. If it reflects green light, and not absorbs it, isn’t the leaf any colour in the world except green?

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Watch this episode of Brain Games to totally change the way you see colours -> Brain Games - In Living Color

 

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