The appearance of antibiotic-resistant bacteria is an example of

Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

51.

The taxonomic key is one of the taxonomic tools in the identification and classification of plants and animals. It is used in the preparation of 

  • Monographs

  • Flora

  • Both (a) and (b)

  • None of these


52.

Which one of the following combination is incorrect?

  • Rio convention → Air pollution

  • Kyoto protocol  → Climate change

  • Montreal Protocol → Ozone depletion

  • Ramsar Convention → Wetland conservation


53.

Monoclonal antibodies and polyclonal antibodies are produced by

  • T-memory cells

  • NK- cells

  • Plasma cells of B-lymphocytes

  • Memory cells of B-lymphocytes


54.

All monerons

  • Contain DNA and RNA

  • Demonstrate a long circular strand of DNA, not formed enclosed in a nuclear membrane

  • Are bacteria

  • All of the above


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55.

Match the following Columns
Column I Column II
A. Opuntia 1. Stem thorns
B. Asparagus 2. Phylloclades
C. Citrus 3. Cladodes

  • A B C
    1 2 3
  • A B C
    2 3 1
  • A B C
    3 2 1
  • A B C
    2 1 3

56.

The method of directly injecting a sperm into ovum in assisted reproductive technology is called.

  • GIFT

  • ZIFT

  • ICSI

  • ET


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57.

The appearance of antibiotic-resistant bacteria is an example of

  • adaptive radiation

  • transduction

  • Pre-existing variation

  • divergent evolution in the population


C.

Pre-existing variation

Post-mitotic gap phase is characterised by all except the synthesis of histone proteins. Histone proteins are synthesised in S-phase. S-phase is called invisible phase of the cell cycle as replicated chromosomes are not visible at this stage.


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58.

Roquefort cheese is ripened by using a

  • type of yeast

  • fungus

  • bacterium

  • cyanobacteria


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59.

Which one of the following graphs correctly describes disruptive selection? When studying fitness level associated with body size?


60.

Munch hypothesis is based on

  • Translocation of food due to Turgor Pressure (TP) gradient and imbibition force

  • Translocation of food due to Turgor Pressure (TP) gradient

  • Translocation of food due to imbition force

  • None of the above


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