Viroids differ from viruses in having;

1.	DNA molecules without protein coat
2.	RNA molecules with protein coat
3.	RNA molecules without protein coat
4.	DNA molecules with protein coat

Which among the following are the smallest living cells, known without a definite cell wall, pathogenic to plants as well as animals and can survive without oxygen?

1. Pseudomonas

2. Mycoplasma

3. Nostoc

4. Bacillus

Chrysophytes, euglenoids, dinoflagellates and slime moulds are included in the kingdom:

Which one of the following statements is wrong?

Which of the following statements is wrong for viroids?
1. They are smaller than viruses
2. They cause infections
3. Their RNA is of high molecular weight
4. They lack a protein coat

The imperfect fungi which are decomposers of litter and help in mineral cycling belong to?

1. Deuteromycetes

2. Basidiomycetes

3. Phycomycetes

4. Ascomycetes

Select the wrong statement:

Cell wall is absent in:
1. Nostoc
2. Aspergillus
3. Funaria
4. Mycoplasma