Who is producer and consumer and …

1. Producers - Producers are the organisms which can be prepare their own food from simple inorganic substances like carbon dioxide and water by using sunlight energy in the presence of chlorophyll.
   
   Example - Green plants and certain blue-green algae.
2. Consumers - Those organisms which consume food (eat food) prepared by producers are called consumers.
   
   Example - Lion and Tiger.

(i) The animals which eat only plants are called herbivores. All herbivores are primary consumers. Example – Goat and cow.

(ii) The small carnivores which feed on herbivores (primary consumers) are called secondary consumers. Example – Frog and bird.

(iii) The Large carnivores (or top carnivores) which feed upon the small carnivores (secondary consumers) are called tertiary consumers. Example – Lion and tiger.

(iv) Those animals which eat both plants and animals, are called omnivores. Example – Crow, dog, man, sparrow.