MCQ Questions for Class 11 Biology: Ch 2 Biological Classification

MCQ Questions for Class 11 Biology: Ch 2 Biological Classification

1. In eubacteria, a cellular component that resembles eukaryotic cells is:
(a) Plasma membrane
(b) Nucleus
(c) Ribosomes
(d) Cell wall
► (a) Plasma membrane

2. Chrysophytes, Euglenoids, Dinoflagellates and Slime moulds are included in the kingdom                (a) Monera
(b) Protista
(c) Fungi
(d) Animalia
► (b) Protista

3. Moneran phylogeny is best evidenced by sequence of nucleotides in RNA of ribosomes. On the basis of this information, the most primitive monerans are :-
(a) Archaebacteria
(b) Eubacteria
(c) Filamentour bacteria
(d) Cyanobacteria
► (a) Archaebacteria

4. Who is called as “Father of taxonomy”
(a) Hooker
(b) Theophrastus
(c) Aristotle
(d) Linnaeus
► (d) Linnaeus

5. Virus envelope is known as:
(a) Capsid
(b) Virion
(c) Nucleoprotein
(d) Core
► (a) Capsid

6. Which one of the following is not a biofertilizer?
(a) Agrobacterium
(b) Rhizobium
(c) Nostoc
(d) Mycorrhiza
► (a) Agrobacterium

7. Which of the following structure is not found in prokaryotic cells :
(a) Plasma membrane
(b) Ribosomes
(c) Nuclear membrane and membranous cell organelles
(d) Hereditary substance
► (c) Nuclear membrane and membranous cell organelles

8. Which one of the following organisms is not an example of eukaryotic cells?
(a) Paramecium caudatum
(b) Escherichia coli
(c) Euglena viridis
(d) Amoeba proteus
► (b) Escherichia coli

9. The main difference between Gram positive and gram negative resides in the composition of:
(a) Cilia
(b) Cell-wall
(c) Cell-membrane
(d) Cytoplasm
► (b) Cell-wall

10. The organism that completely lack a cell wall and are smallest living cell known that can survive without oxygen is
(a) Virus
(b) Bacteriophages
(c) Yeast
(d) Mycoplasma
► (d) Mycoplasma

11. Archegoniophore is present in:
(a) Marchantia
(b) Chara
(c) Adiantum
(d) Funaria
► (a) Marchantia

12. Mesosomes are found in:
(a) Fungi
(b) Virus
(c) Mycoplasma
(d) Bacteria
► (d) Bacteria

13. Which of the following is an exception of monera kingdom -
(a) Bacteria
(b) Virus
(c) Cyanobacteria
(d) Mycoplasma
► (b) Virus

14. Which of the following lacks peptidoglycan in their cell walls:
(a) Halophile bacteria
(b) Methanogen bacteria
(c) Thermoacidophilic bacteria
(d) All the above
► (d) All the above

15. Which Archaebacteria is present in the guts of ruminant animals such as cows and buffaloes?
(a) Speculums
(b) Methanogens
(c) Heterogens
(d) Holophiles
► (b) Methanogens

16. Which statement is wrong for viruses
(a) All are parasites
(b) All of them have helical symmetry
(c) They have ability to synthesize nucleic acids and proteins
(d) Antibiotics have no effect on them
► (b) All of them have helical symmetry

17. Which one of the following is true for fungi?
(a) They are phagotrophs
(b) They lack a rigid cell wall
(c) They are heterotrophs
(d) They lack nuclear membrane
► (c) They are heterotrophs

18. Satellite RNAs are present in some
(a) Plant viruses
(b) Viroids
(c) Prions
(d) Bacteriophages
► (a) Plant viruses

19. Which among the following is not included in the three domains system?
(a) Bacteria Domain
(b) Archaea Domain
(c) Viral Domain
(d) Eukara Domain
► (c) Viral Domain

20. Which one of the following fixes CO2 in to carbohydrates
(a) Rhizobium
(b) Nitrobactor
(c) Bacillus
(d) Rhodospirillum
► (d) Rhodospirillum

21. Wine turns sour because of
(a) Heat
(b) Aerobic bacteria
(c) Anaerobic bacteria
(d) Exposure to the light
► (b) Aerobic bacteria

22. Genetic material for retrovirus is
(a) Nucleoprotein complex
(b) RNA
(c) Both DNA and RNA
(d) DNA
► (b) RNA

23. Naked cytoplasm, multinucleated and saprophytic are the characteristics of
(a) Monerans
(b) Slime moulds
(c) Fungi
(d) Protists 
► (b) Slime moulds

24. Which of the following organisms were placed together under algae?
(a) Chlorella and Chlamydomonas
(b) Spirogyra and Chlamydomonas
(c) Spirogyra and Chlorella
(d) All of the above
► (d) All of the above

25. The organism that completely lack a cell wall and are smallest living cell know, can survive without oxygen is
(a) Bacteriophages
(b) Yeast
(c) Mycoplasmas
(d) Virus
► (c) Mycoplasmas

26. Five kingdom system of classification suggested by R.H. Whittaker is not based on:
(a) Presence or absence of a well defined nucleus.
(b) Mode of reproduction.
(c) Mode of nutrition.
(d) Complexity of body organisation.
► (a) Presence or absence of a well defined nucleus.

27. Antibiotics cure disease by
(a) Competitive Inhibition
(b) Fighting with the disease causing organism
(c) Turning the pathogen out of the body
(d) Removing the pain
► (a) Competitive Inhibition

28. Nuclear membrane is absent in
(a) Fungi
(b) Protista
(c) Plantae
(d) Monera
► (d) Monera

29. The blue-green algae are also referred as
(a) Cyanobacteria
(b) Eubacteria
(c) Archaebacteria
(d) Heterotrophic bacteria
► (a) Cyanobacteria

30. One of the major components of cell wall of most fungi is:
(a) Chitin
(b) Peptidoglycan
(c) Cellulose
(d) Hemicellulose 
► (a) Chitin

31. Sexual reproduction is by copulation of male and female followed by embryological development is characteristic feature of
(a) Animalia
(b) Fungi
(c) Mucor
(d) Plantae
► (a) Animalia

32. Archaebacteria differ from eubacteria in:
(a) Cell membrane
(b) Mode of nutrition
(c) Cell shape
(d) Mode of reproduction 
► (a) Cell membrane
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