This article throws light upon five types of micro-organisms present in soil. The types are: 1. Nematodes 2. Protozoa 3. Rotifera 4. Mycorrhizae 5. Lichens. 1. Nematodes: They are also called threadworms or eelworms. They are mainly microscopic in size and are the most abundant animals (maximum number is 50 per gm.). Nematodes live mainly […]