Chromatophores take part in from Biology NEET Year 2015 Free So

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 


A.

Photosynthesis

Chromatophores are found in members of phototrophic bacteria. They contain bacteriochlorophyll pigments and carotenoids and take part in photosynthesis. In purple bacteria, such as Rhodospirillum rubrum, the light-harvesting proteins are intrinsic to the chromatophore membranes. However, in green sulphur bacteria, they are arranged in specialised antenna complexes called chlorosomes. 

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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

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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

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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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