Biology Multiple Choice Questions and Answers for Different Competitive Exams

Multiple Choice Questions on Biological Classification

16. Classification given by Bentham and Hooker is
a) Artificial
b) Natural
c) Numerical
d) Phylogenetic
17. Artificial system of plant classification was proposed by
a) de Candolle
b) Bentham and Hooker
c) Theophrastus
d) Engler and Prantl
18. The largest herbarium of the world is located in
Herbarium sheet
a) New York
b) Kew
c) Geneva
d) Berlin
19. Biosystematics aims at
a) the classification of organisms based on road morphological characters
b) Identification and arrangements of organisms on the basis of their cytological characteristics
c) Delimiting various taxa of organisms and establishing their relationships
d) The classification of organisms based on their evolutionary history and establishing their phylogeny on the totality of various parameters from all fields of studies
20. In five kingdom system, the main basis of classification is
a) Structure of nucleus
b) Structure of cell wall
c) Mode of nutrition
d) Asexual reproduction
a) Floral characters
b) Evolutionary relationships
c) Morphological features
d) Chemical constituents
22. T. O. Diener discovered a
a) Free infectious DNA
b) bacteriophage
c) Free infectious RNA
d) Infectious protein
23. Viroids differ from viruses in being
a) Naked DNA molecules
b) Naked DNA with viral genome
c) Naked RNA molecules only
d) Satellite RNA with viral genome
24. The Protists have
a) Only free nucleic acid aggregates
b) Membrane bound nucleoproteins lying embedded in the cytoplasm
c) Gene containing nucleoproteins condensed together in loose mass
d) Nucleoprotein in direct contact with the rest of the cell substance
25. Mycorrhiza is correctly described as
a) Parasitic association between roots and some fungi
b) relation of ants with the stem of some trees
c) Symbiosis of algae and fungi
d) Symbiotic relationship between fungi and roots of some higher plants
Answers
16. b) Natural
17. c) Theophrastus
18. b) Kew
19. d) The classification of organisms based on their evolutionary history and establishing their phylogeny on the totality of various parameters from all fields of studies
20. c) Mode of nutrition
21. b) Evolutionary relationships
22. c) Free infectious RNA
23. c) Naked RNA molecules only
24. b) Membrane bound nucleoproteins lying embedded in the cytoplasm
25. d) Symbiotic relationship between fungi and roots of some higher plants
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