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NEET Zoology MCQs: Class-XI and Class-XII



NEET Zoology MCQs: Class-XI and Class-XII

Match the following columns and select the correct option.

Column-I Column-II
(A)Clostridium butylicum (I)Cyclosporin-A
(B)Trichoderma polysporum (II)Butyric Acid
(C)Monascus purpureus (III)Citric Acid
(D)Aspergillus niger (IV)Blood cholesterol lowering agent

[class-xi ]

  • (A)-(III), (B)-(IV), (C)-(II), (D)-(I)
  • (A)-(II), (B)-(I), (C)-(IV), (D)-(III)
  • (A)-(I), (B)-(II), (C)-(IV), (D)-(III)
  • (A)-(IV), (B)-(II), (C)-(II), (D)-(I)
    • Correct Option: B  [ (A)-(II), (B)-(I), (C)-(IV), (D)-(III) ]

    Remark:

Match the following techniques or instruments with their usage:

Column-I Column-II
(A)Bioreactor (I)Separation of DNA fragments
(B)Electrophoresis (II)Production of large quantities of products
(C)PCR (III)Detection of pathogen, based on antigen - antibody reaction
(D)ELISA (IV)Amplification of nucleic acids

[class-xii ]

  • (A)-(III), (b)-(II), (c)-(IV), (d)-(I)
  • (A)-(II), (b)-(I), (c)-(IV), (d)-(III)
  • (A)-(IV), (b)-(III), (c)-(II), (d)-(I)
  • (A)-(II), (b)-(I), (c)-(III), (d)-(IV)
    • Correct Option: B  [ (A)-(II), (b)-(I), (c)-(IV), (d)-(III) ]

    Remark:

First discovered restriction endonuclease that always cuts DNA molecule at a particular point by recognising a specific sequence of six base pairs is:

[class-xii ]

  • EcoR1
  • Adenosine deaminase
  • Thermostable DNA polymerase
  • Hind II
    • Correct Option: D  [ Hind II ]

    Remark:

Select the correct statement from the following:

[class-xii ]

  • Gel electrophoresis is used for amplification of a DNA segment.
  • The polymerase enzyme joins the gene of interest and the vector DNA.
  • Restriction enzyme digestions are performed by incubating purified DNA molecules with the restriction enzymes of optimum conditions.
  • PCR is used for isolation and separation of gene of interest.
    • Correct Option: C  [ Restriction enzyme digestions are performed by incubating purified DNA molecules with the restriction enzymes of optimum conditions. ]

    Remark:

In a mixture, DNA fragments are separated by:

[class-xii ]

  • Bioprocess engineering
  • Restriction digestion
  • Electrophoresis
  • Polymerase chain reaction
    • Correct Option: C  [ Electrophoresis ]

    Remark:

In Recombinant DNA technology antibiotics are used:

[class-xii ]

  • to keep medium bacteria-free
  • to detect alien DNA
  • to impart disease-resistance to the host plant
  • as selectable markers
    • Correct Option: D  [ as selectable markers ]

    Remark:

Match the items in Column-I with those in Column-II :

Column-I Column-II
(A)Herbivores-Plants (I)Commensalism
(B)Mycorrhiza-Plants (II)Mutualism
(C)Sheep-Cattle (III)Predation
(D)Orchid-Tree (IV)Competition

[class-xii ]

  • (A)-(IV), (B)-(II), (C)-(I), (D)-(III)
  • (A)-(III), (B)-(II), (C)-(IV), (D)-(I)
  • (A)-(II), (B)-(I), (C)-(III), (D)-(IV)
  • (A)-(I), (B)-(III), (C)-(IV), (D)-(II)
    • Correct Option: B  [ (A)-(III), (B)-(II), (C)-(IV), (D)-(I) ]

    Remark:

The impact of immigration on population density is:

[class-xii ]

  • Negative
  • Both positive and negative
  • Neutralized by natality
  • Positive
    • Correct Option: D  [ Positive ]

    Remark:

According to Alexander von Humboldt:

[class-xii ]

  • Species richness decreases with increasing area of exploration
  • Species richness increases with increasing area, but only up to limit
  • There is no relationship between species richness and area explored.
  • Species richness goes on increasing with increasing area of exploration
    • Correct Option: B  [ Species richness increases with increasing area, but only up to limit ]

    Remark:

Which of the following is not an attribute of a population?

[class-xii ]

  • Sex ratio
  • Natality
  • Mortality
  • Species interaction
    • Correct Option: D  [ Species interaction ]

    Remark:
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