Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

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41.

Set which includes only analogous organs is :

  • wings of butterfly, housefly and bat

  • hindlegs of horse, grasshopper and bat

  • wings of btterfly and Wingspread of bat and birds

  • mandibles of cockrach, mosquito and honey bee


C.

wings of btterfly and Wingspread of bat and birds

Analogous organs have similar functions but are different in their structure and origin. For eg, wings of butterfly, birds and but have similar functions etc.


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42.

'Convergent Evolution' is shown by :

  • homologous organs

  • analogous organs

  • vestigial organs

  • above three


43.

In DNA, which is absent :

  • Adenine

  • Thymine

  • Guanine

  • Uracil


44.

Lymphocytes are formed by :

  • plasma cells

  • mast cells

  • liver cells

  • none of these


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45.

On high mountains, difficulty in breathing is due to :

  • decrease in partial pressure of O2

  • decrease in amount of O2

  • increase in CO2 conc

  • all of the above


46.

Example of Analogous organs is :

  • wings of bird and insect

  • forelimbs of horse and man

  • teeth of elephant and man

  • none of the above


47.

Which is called soluble RNA ?

  • rRNA

  • tRNA

  • mRNA

  • hnRNA


48.

e -DNA is formed from m-RNA by which enzyme:

  • restriction endonuclease

  • reverse transcriptase

  • DNA polymerase

  • RNA polymerase


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49.

Mutation is more common when it is present in:

  • dominant condition

  • recessive condition

  • constant in population

  • none of the above


50.

In DNA, which is absent ?

  • Adenine

  • Guanine

  • Uracil

  • Cytosine


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