Solution of Chapter 2. Biological Classification (Biology NCERT Book)

1 State two economically important uses of:(a) Heterotrophic bacteria(b) Archaebacteria

2 What is the nature of cell walls in diatoms?

3 Find out what do the terms ‘algal bloom’ and ‘red-tides’ signify.

4 How are viroids different from viruses?

5 Describe briefly the four major groups of Protozoa.

6 What do the terms phycobiont and mycobiont signify?

7 What are the characteristic features of Euglenoids?

8 Give a brief account of Viruses with respect to their structure and nature of genetic material. Also name four common viral diseases.