Question

Show with the help of a sketch that plants are the ultimate source of food .​

Answer 1

Explanation:

Answer. As they are produce food by the process of photosynthesis which cannt be done by anyother else. ... Plants use chlorophyll and co2 and H2O also in photosynthesis which is a biochemical process and became a cause of life on earth. Hence plants are the ultimate soyrce of food on earth

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Answer 2

All living beings depend on plants whether directly or indirectly. For example, plant-eater animals depend directly on plants but carnivores depend indirectly on plants. The following sketch shows some examples of plant dependency.