Food chain is a sequence of organisms through which energy is transferred in the form of food by the process of one organism consuming the other. It shows the relationship of producer and consumer, i,e.,'who eats whom'. Thus it is a series of organisms taking part at various biotic levels from the Producer and ends in consumer'
(i) Why are green plants known as producers ?
(ii) 'Man is only a consumer'. Justify the statement by giving any two reasons.