pyq/2013/prelims/53

With reference to the food chains in ecosystems, which of the following kinds of an organism is/are known as decomposer organism/organisms?

1. Virus

2. Fungi

3. Bacteria

Select the correct answer using the codes given below.

(A) 1 only

(B) 2 and 3 only

(C) 1 and 3 only

(D) 1, 2 and 3