Biological Classification — DPP 8

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
Viroid was discovered by :-
  1. A Haeckel
  2. B Pasteur
  3. C T.O. Diener
  4. D Theophrastus
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Correct answer: C

2
Find the incorrect statement about fungi :-
  1. A They show a great diversity in morphology and habitats
  2. B Fungi are cosmopolitan and occur in air, water, soil and as parasites also
  3. C They prefer to grow in cold and dry places
  4. D With the exception of yeasts, fungi are filamentous
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Correct answer: C

3
Most characteristic feature of diatoms is :-
  1. A Pigments
  2. B Stored food
  3. C Cell wall
  4. D Non oxygenic photosynthesis
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Correct answer: C

4
The bacteria that convert nitrates into nitrogen and reduce the soil fertility is :-
  1. A Nitrobacter
  2. B Thiobacillus denitrificans
  3. C Agrobacterium tumefaciens
  4. D Azotobacter
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Correct answer: B

5
Read the following statements and select the correct option :-
(a) Blue green algae contain single stranded circular DNA.
(b) Gas vacuoles are present in all prokaryotes.
(c) Only 70S type of ribosomes are present in Eubacteria.
(d) Plasmid is the main DNA in bacterial cell. (e) Cell wall is absent in Mycoplasma. Options :-
  1. A 4-correct, 1-incorrect
  2. B 1-correct, 4-incorrect
  3. C 3-correct, 2-incorrect
  4. D 2-correct, 3-incorrect
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Correct answer: D

6
Choose the correct statement :-
  1. A Most of the bacteria are autotrophs
  2. B All bacteria are heterotrophs
  3. C Some bacteria are heterotrophs
  4. D Most of the bacteria are heterotrophs
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Correct answer: D

7
Choose the incorrect pair :-
  1. A Virus - Nucleocapsid
  2. B Viroids - Only RNA
  3. C Lichen - Algae and fungi
  4. D Mycorrhiza - BGA and higher plants
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Correct answer: D

8
Richest source of bacteria is : -
  1. A Air
  2. B Soil
  3. C Water
  4. D Milk
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Correct answer: B

9
Dinoflagellates have -
  1. A A single flagellum in the transverse groove between the cell plates.
  2. B A single flagellum in the longitudinal groove between the cell plates.
  3. C Two flagella, one lies longitudinally and the other transversely in a furrow between the wall plates.
  4. D No flagella.
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Correct answer: C

10
Which of the following unicellular organism has a macronucleus for trophic function and one or more micronuclei for reproduction?
  1. A Trypanosoma
  2. B Paramoecium
  3. C Euglena
  4. D Amoeba
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Correct answer: B

11
How many kingdoms include prokaryotic organisms only, in three domain classification?
  1. A One
  2. B Three
  3. C Two
  4. D Four
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Correct answer: C

12
Choose the incorrect statement regarding Mycoplasma :-
  1. A They lack cell wall
  2. B They are smallest living cell
  3. C They can survive without oxygen
  4. D They have mesosome for respiration
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Correct answer: D

13
Animal like feature of slime moulds is-
  1. A Formation of fruiting bodies
  2. B Cellulosic cell wall around spores
  3. C Absence of cell wall in plasmodium
  4. D Formation of spores
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Correct answer: B

14
At which place bacteria are not found :
  1. A Soil
  2. B Ice
  3. C Sea
  4. D Distilled water
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Correct answer: D

15
An archaeon that lives in extremely salty condition is referred to as a -
  1. A Thermophiles
  2. B Halophiles
  3. C Thermo acidophiles
  4. D Methanogen
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Correct answer: C

16
Among the following which statement is correct:
  1. A Red sea is due to Dinoflagellates.
  2. B Aspergillus reproduce asexually by conidia formation.
  3. C Deuteromycetes do not produce conidia.
  4. D Trichoderma belongs to Basideomycetes group.
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Correct answer: B

17
Which of the following characters indicate similarity between fungi and animals ?
  1. A Heterotrophic nutrition
  2. B Type of stored food
  3. C Presence of chitin
  4. D All the above
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Correct answer: D

18
Assertion : TMV is a virus which causes Tobacco mosaic disease.
Reason : TMV has RNA as genetic material.
  1. A If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
  2. B If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
  3. C If Assertion is true but Reason is false.
  4. D If both Assertion and Reason are false.
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Correct answer: B

19
Sexual cycle is absent in :-
  1. A Phycomycetes
  2. B Deuteromycetes
  3. C Ascomycetes
  4. D Basidiomycetes
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Correct answer: B

20
Typhoid and tetanus are caused by :-
  1. A Bacteria
  2. B Virus
  3. C Viroids
  4. D Fungi
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Correct answer: A

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