(a) What are heterotrophs? Give one example of heterotrophs.
(b) What is the difference between autotrophic nutrition and heterotrophic nutrition?

(a) Organisms that depend upon autotrophs and other heterotrophs for their food are known as heterotrophs. Animals are heterotrophs.

(b)

Autotrophic nutrition	Heterotrophic nutrition
The mode of nutrition in which an organism prepares its own food with the help of simple inorganic materials like water and carbon dioxide from the surroundings is known as autotrophic nutrition.	The mode of nutrition in which an organism cannot prepare its own food and depend upon other organisms for its food is known as heterotrophic nutrition.