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11th Standard Biology English Medium Free Online Test One Mark Questions with Answer Key 2020 - Part Nine

11th Standard

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Biology

Time : 00:10:00 Hrs
Total Marks : 10

    Answer all the questions

    10 x 1 = 10
  1. Identify the Archaebacterium

    (a)

    Acetobacter

    (b)

    Erwinia

    (c)

    Treponema

    (d)

    Methanobacterium

  2. Retting of fibre is caused by __________ .

    (a)

    Clostridium tertium

    (b)

    E.coli

    (c)

    C.acetobutylicum

    (d)

    C.telani

  3. Rice tungro is caused by ___________ .

    (a)

    fungi

    (b)

    bacteria

    (c)

    mycoplasma

    (d)

    viruses

  4. The seven kingdom system of classification was proposed by _________

    (a)

    Coral Woese

    (b)

    R.H. Whittakar

    (c)

    John ray

    (d)

    Cavalier Smith

  5. The haploid number of chromosome for an Angiosperm is 14, the number of chromosome in its endosperm would be

    (a)

    7

    (b)

    14

    (c)

    42

    (d)

    28

  6. Selaginalla is the example for:

    (a)

    Plectostele

    (b)

    Haplostele

    (c)

    Mixed protostele

    (d)

    Actinostele

  7. Example for negatively geotropic roots

    (a)

    Ipomoea, Dahlia

    (b)

    Asparagus, Ruellia

    (c)

    Vitis, Portulaca

    (d)

    Avicennia, Rhizophora

  8. Metameric segmentation is the main feature of

    (a)

    Annelida

    (b)

    Echinodermata 

    (c)

    Arthropoda

    (d)

    Coelenterata

  9. At the venous end of the capillary bed, the osmotic pressure is

    (a)

    Greater than the hydrostatic pressure

    (b)

    Result in net outflow of fluids

    (c)

    Results in net absorption of fluids

    (d)

    No change occurs

  10. All of the following are associated with the myelin sheath except

    (a)

    Faster conduction of nerve impulses

    (b)

    Nodes of Ranvier forming gaps along the axon

    (c)

    Increased energy output for nerve impulse conduction

    (d)

    Saltatory conduction of action potential

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