Biological Classification — DPP 12

20 NEET questions from Biological Classification, with answers and explanations. Attempt it as a timed test to get scoring, accuracy breakdown and mistake tracking.

Attempt this test free 20 questions · 30 minutes · +80 marks
1
Which of the following unicellular algae reproduce by auxospores, have silicified cell wall and store food in the form of fats, leucosine and chrysolaminarin ?
  1. A Diatoms
  2. B Red algae
  3. C Dinoflagellates
  4. D Euglenoids
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Correct answer: A

2
Which of the following processes are involved in the reproduction of protists?
  1. A Binary fission and budding
  2. B Cell fusion and zygote formation
  3. C Spore formation and cyst formation
  4. D All of the above
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Correct answer: D

3
In which of the following nuclear dimorphism is seen?
  1. A Entamoeba
  2. B Leishmania
  3. C Trypanosoma
  4. D Paramoecium
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Correct answer: D

4
The common nitrogen-fixer in paddy fields is:
  1. A Frankia
  2. B Rhizobium
  3. C Azospirillum
  4. D Oscillatoria
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Correct answer: D

5
Archaebacteria differ from other bacteria in:-
  1. A Nucleoid
  2. B Composition of cell wall
  3. C Composition of cytoplasm
  4. D Composition of genetic material
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Correct answer: B

6
According to five kingdom classification Protista includes :-
  1. A Chrysophytes, Dinoflagellates, Protozoans
  2. B Diatoms, Euglenoids, Virus
  3. C Dinoflagellates, Protozoans, Red algae
  4. D Chrysophytes, Bryophytes, Protozoans, Slime mould
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Correct answer: A

7
Nitrogen fixing cyanobacteria are :-
  1. A Rhizobium, Nostoc
  2. B Rhizobium, Anabaena
  3. C Nostoc, Anabaena
  4. D Anabaena, Azolla
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Correct answer: C

8
Statement I: Characterisation, identification, classification and nomenclature are the processes that are basic to taxonomy.
Statement II : External and internal structure, along with the structure of cell, development process and ecological information of organisms are essential and form the basis of modern taxonomic studies.
  1. A Both statements are correct
  2. B Statement I is correct and II is incorrect
  3. C Statement I is incorrect and II is correct
  4. D Both statements are incorrect BBC625
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Correct answer: A

9
Which bacteria is utilized in Gober gas plant?
  1. A Methanogens
  2. B Nitrifying bacteria
  3. C Ammonifying bacteria
  4. D Denitrifying bacteria
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Correct answer: A

10
Occurrence of dikaryotic mycelium mainly is the characteristic of :-
  1. A Myxomycetes
  2. B Phycomycetes
  3. C Deuteromycetes
  4. D Basidiomycetes
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Correct answer: D

11
Which organism is responsible for making the sea appear red by rapid multiplication?
  1. A Euglena
  2. B Paramoecium
  3. C Gonyaulax
  4. D Trypanosoma
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Correct answer: C

12
Pili do not play a role in motility because :-
  1. A They are small bristle like fibres.
  2. B They help bacteria to attach rocks and host tissues.
  3. C They are made up of non-contractile protein.
  4. D They are found inside the surface of bacteria.
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Correct answer: C

13
Mycobiont and Phycobiont are found in
  1. A Mycorrhiza
  2. B Root
  3. C Lichens
  4. D BGA
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Correct answer: C

14
All eukaryotic unicellular organisms belong to-
  1. A Monera
  2. B Protista
  3. C Fungi
  4. D Bacteria
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Correct answer: B

15
Cell membrane of bacteria is made up of -
  1. A Cellulose and lipid
  2. B Chitin
  3. C Lipid + Protein
  4. D Protein and Cellulose
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Correct answer: C

16
Which are edible fungi :-
  1. A Morels, truffles only
  2. B Morels, truffles, Agaricus only
  3. C Puff balls, morels, truffles only
  4. D Agaricus, truffles, bracket fungi only
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Correct answer: B

17
Which is incorrect statement ?
  1. A The Mycoplasma are organisms that completely lack a cell wall.
  2. B Mycoplasma can survive without oxygen.
  3. C Mycoplasma are the smallest living cells.
  4. D Mycoplasma can cause disease only in plants.
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Correct answer: D

18
According to Whittaker kingdom Protista includes :-
  1. A Prokaryotes
  2. B Unicellular eukaryotes
  3. C Slime molds & protozoa
  4. D Multicellular & eukaryotes
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Correct answer: B

19
Free living nitrogen-fixing bacteria are found in-
  1. A Air
  2. B Soil
  3. C Root nodules
  4. D None of above
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Correct answer: B

20
Assertion : Longitudinal binary fission in found in Trypanosoma.
Reason : Binary fission is a method of sexual reproduction.
  1. A Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
  2. B Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
  3. C Assertion is true but Reason is false.
  4. D Both Assertion and Reason are false.
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Correct answer: C

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