Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

1.

Read the different components from I to IV in the list given below and tell the correct order of the components with reference to their arrangement from outer side to inner side in a woody dicot stem:
(a) Secondary cortex
(b) Wood
(c) Secondary phloem
(d) Phellem
The correct order is

  • (c), (d), (b), (a)

  • (a), (b), (d), (c)

  • (d), (a), (c), (b)

  • (d), (a), (c), (b)

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2.

Chromatophores take part in

  • Photosynthesis

  • Growth

  • Movement 

  • Movement 

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3.

Which of the following joints would allow no movement?

  • Fibrous joint

  • Cartilaginous joint

  • Synovial Joint

  • Synovial Joint

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4.

The wheat grain has an embryo with one large, shield-shaped cotyledon known as

  • Epiblast

  • Coleorrhizia

  • Scutellum

  • Scutellum

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5.

Which of the .following structures is not found in a prokaryotic cell?

  • Nuclear envelope

  • Ribosome

  • Mesosome

  • Mesosome

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6.

The imperfect fungi which are decomposer of litter and help in mineral cycling belong to

  • Deuteromycetes

  • Basidiomycetes

  • Phycomycetes

  • Phycomycetes

1140 Views

7.

Column-I

Column-II
Thylakoids Dis-shaped sacs in Golgi apparatus C
Cristae Condensed structure of DNA
Cisternae flat membranous sacs in stroma 
Chromatin Infoldings mitochondrial
  • Codes 
         
    A   B    C    D
          4   3     1     2

      
  • Codes 
         
    A     B    C    D
         3      4     1      2
  • Codes
                 
    A   B   C    D
                  3   1    4    2
  • Codes
                 
    A   B   C    D
                  3   1    4    2
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8.

During biological nitrogen fixation inactivation of nitrogenase by oxygen poisoning is prevented by

  • Leghaemogolobin

  • Xanthophyll

  • Carotene

  • Carotene


A.

Leghaemogolobin

During biological nitrogen fixation, inactivation of nitrogenase  by oxygen poisioning is prevented by leghaemoglobin.
It is a  red-pigment that is filled outside the peribacteroid space in the cytosol of nodule cells. It has the ability to combine very rapidly with oxygen and thus acts a very efficient O2 scavenger. 

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9.

Which one of the following hormones is not involved in sugar metabolism?

  • Cortisone

  • Aldosterone

  • Insulin

  • Insulin

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10.

Which of the following is not a function of the skeletal system?

  • Production of erythrocytes

  • Storage of minerals

  • Production of body heat

  • Production of body heat

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