Multiple Choice Questions

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PS-II occurs only in

  • stroma

  • granal thylakoids

  • stromal lamella

  • matrix


B.

granal thylakoids

Photosystem II mostly occurs in the appressed regions of granal thylakoids.


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Cleistogamy is leading over anthesis because

  • pollination agent is not required

  • it assures heterozygosity

  • it favours insect pollination

  • it allows xenogamy


Given figure shows

  • structure of lenticel

  • hydathode showing gaseous vapour exchange

  • fungus reproducing by spore formation

  • algae reproducing by spore formation.


Bacteria, fungi, lower plants survive in adverse conditions by

  • diapause

  • suspended growth

  • migration

  • formation of thick walled spores.


Cell theory was proposed by

  • a botanist

  • a zoologist

  • a botanist and a zoologist

  • a psychologist


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In active transport, carrier proteins are used, which use energy in the form of ATP, to

  • transport molecules against concentration gradient of cell wall.

  • transport molecules along concentration gradient of cell membrane.

  • transport molecules against concentration gradient of cell membrane.

  • transport molecules along concentration gradient of cell wall.


Identify the given figures A, B, C, D and E.

                 

  •        A        B        C        D        E
    Marginal Axile Free central Parietal Basal
  •        A        B        C        D        E
    Marginal Parietal Free central Axile Basal
  •        A        B        C        D        E
    Marginal Axile Parietal Free central Basal
  •        A        B        C        D        E
    Marginal Axile Parietal Basal Free central

In a 50 gm living tissue, what would be the amount of water

  • 15- 25 gm

  • 25 - 30 gm

  • 35- 45 gm

  • 70- 90 gm


After glycolysis, fate of glucose in mitochondrial matrix is

  • oxidation

  • reduction

  • oxidative decarboxylation

  • hydrolysis


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In the given diagram A and B represent

  •              A               B
    Mineralisation Demineralisation
  •              A               B
    Ammonification Denitrification
  •              A               B
    Denitrification Ammonification
  •              A               B
    Denitrification Mineralisation