Consider the following statements relating to the ecosystem:

1. The term ecosystem was first used by A.G. Tansley.

2. Those organisms which produce their food themselves are termed as autotrophs.

3. Consumers consume their food through the process of photosynthesis.

4. Decomposers convert inorganic matter into organic matter.

Which of the above statements are correct:

Code:

U.P.U.D.A./L.D.A. (Pre) 2002