MCQ Questions on Biological Classification
1. Which of the following organisms can be found in extreme saline conditions?
(a) Eubacteria
(b) Archaebacteria
(c) Cyanobacteria
(d) Mycobacteria
Answer
Answer: (b) Archaebacteria
2. Linnaeus used which kingdom of classification?
(a) Artificial system
(b) Natural system
(c) Phylogenetic system
(d) Asexual system
Answer
Answer: (a) Artificial system
3. Smallest taxon of classification is _______.
(a) Kingdom
(b) Family
(c) Variety
(d) Species
Answer
Answer: (d) Species
4. In which of the following kingdom are Archaea and Nitrogen-fixing organisms classified?
(a) Animalia
(b) Plantae
(c) Monera
(d) Fungi
Answer
Answer: (c) Monera
5. Bentham and Hooker gave which system of classification?
(a) Numerical
(b) Phylogenetic
(c) Artificial
(d) Natural
Answer
Answer: (d) Natural
6. What is the main basis of classification in the five-kingdom system?
(a) Structure of the nucleus
(b) Structure of cell wall
(c) Asexual Reproduction
(d) Mode of Nutrition
Answer
Answer: (d) Mode of Nutrition
7. Which of the following statements is false about the fungi?
(a) They are eukaryotes
(b) They are heterotrophs
(c) They possess a purely cellulosic cell wall
(d) None of the above
Answer
Answer: (c) They possess a purely cellulosic cell wall
8. African Sleeping Sickness is caused by _______.
(a) Trypanozoma cruzi
(b) T. Tangela
(c) T. rhodesiense
(d) T. gambiense
Answer
Answer: (d) T. gambiense
9. Linnaeus evolved a system of nomenclature called _______.
(a) Vernacular
(b) Monomial
(c) Polynomial
(d) Binomial
Answer
Answer: (d) Binomial
10. What is a taxon?
(a) A group of related families
(b) A type of living organisms
(c) A group of related species
(d) A group of any ranking
Answer
Answer: (d) A group of any ranking
11. Phylogenetic classification is based on _______.
(a) Overall similarities
(b) Habit of plants
(c) Common evolutionary descendants
(d) All of these
Answer
Answer: (c) Common evolutionary descendants
12. Static concept of species was proposed by _______.
(a) Darwin
(b) Theophrastus
(c) Linnaeus
(d) De Candolle
Answer
Answer: (c) Linnaeus
13. The protists have which of the following?
(a) Free nucleic acid aggregates
(b) Nucleoprotein in direct contact with the rest of the cell substance
(c) Membrane-bound nucleoproteins within the cytoplasm
(d) Nucleoproteins condensed together in a loose mass
Answer
Answer: (c) Membrane-bound nucleoproteins within the cytoplasm
14. Genes of Tobacco Mosaic Virus are _______.
(a) Double-stranded RNA
(b) Single-stranded RNA
(c) Double-stranded DNA
(d) Proteinaceous
Answer
Answer: (b) Single-stranded RNA
15. Blue-green algae belong to which group?
(a) Protista
(b) Prokaryotes
(c) Fungi
(d) Bryophytes
Answer
Answer: (b) Prokaryotes
16. Who wrote the book “Genera Plantarum”?
(a) Bessey
(b) Benthem and Hooker
(c) Linnaeus
(d) Hutchinson
Answer
Answer: (c) Linnaeus
17. T.O. Diener discovered _______.
(a) Bacteriophage
(b) Infectious protein
(c) Free infectious DNA
(d) Free infectious RNA
Answer
Answer: (d) Free infectious RNA
18. ICBN stands for _______.
(a) International Code of Botanical Nomenclature
(b) Indian Code of Botanical Nomenclature
(c) Indian Congress of Biological names
(d) Indian Congress of Botanical Nomenclature
Answer
Answer: (a) International Code of Botanical Nomenclature