Biological Classification MCQ Questions and Answers for Practice

1. A dikaryon is formed when

1. Meiosis is arrested
2. The two haploid cells do not fuse immediately
3. Cytoplasm does not fuse
4. None of the above

2. A virus contains

1. DNA
2. RNA
3. DNA or RNA
4. DNA and RNA

3. African sleeping sickness is caused by

1. Giardia intestinalis
2. Leishmania
3. Trypanosoma
4. Entamoeba

4. All eukaryotic unicellular organisms belong to

1. Monera
2. Protista
3. Fungi
4. Bacteria

5. All fungi are

1. Autotrophs
2. Saprotrophs
3. Heterotrophs
4. Parasites

6. All the bacteria fix nitrogen except

1. Rhizobium
2. E Coli
3. Azotobacter
4. Cyanobacteria

7. An association between roots of higher plants and fungi is called

1. Lichen
2. Fern
3. Mycorrhiza
4. BGA

8. Associations between Mycobiont and Phycobiont are found in

1. Mycorrhiza
2. Root
3. Lichens
4. BGA

9. By how many criteria, living organisms have been classified into five kingdom

1. Two
2. Four
3. five
4. Three

10. Class dicotyledon is divided into

1. 7 sub-classes
2. 5 sub-classes
3. 3 sub-classes
4. 2 sub- classes

11. Contagium vivum fluidum was proposed by

1. D.J.Ivanowsky
2. M.W.Beijerinek
3. Stanley
4. Robert Hook

12. Difference between Virus and Viroid is

1. Absence of protein coat in viroid but present in virus
2. Presence of low molecular weight RNA in the virus but absent in viroid
3. Both a and b
4. None of the above

13. Embryo is not formed in

1. Bryophytes
2. algae
3. gymnosperm
4. pteridophytes

14. Example of blue green algae is in

1. Fungi
2. Monera
3. Protistae
4. Plantae

15. Extra chromosomal, circular, double stranded, self replicating DNA molecule in bacteria is called

1. Cosmid
2. Plasmid
3. Phasmid
4. Phagemid