Question

why are only green plants known as producers

Answer 1

Because they contain chlorophyll. They are the only organisms which can manufacture their own food. Chlorophyll helps them to manufacture their food.

Answer 2

Heya user ,
Here is your answer !!

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Green plants are the organisms which have the green pigment chlorophyll .

So , they can synthesize ( or produce ) their own food using sunlight , carbon dioxide and water by the process of photosynthesis .

On the other hand , all the other organisms do not contain the pigment chlorophyll .

Hence , they can not synthesize ( or produce ) their own food .

So , only the green plants are called ' Producers '.

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Hope it helps !!