New ! Biology MCQ Practise Tests

12th Standard Biology English Medium Free Online Test Creative 1 Mark Questions - Part Five

12th Standard

    Reg.No. :
  •  
  •  
  •  
  •  
  •  
  •  

Biology

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

    Answer all the questions

    10 x 1 = 10
  1. Isogamy is observed in ______

    (a)

    Monocystis

    (b)

    Mammals

    (c)

    Trichonympha

    (d)

    Reptiles

  2. ______ cells nourish the sperms.

    (a)

    Leydig cells

    (b)

    Interstitial cells

    (c)

    Spermatogonic cells

    (d)

    Sertoli cells

  3. In gypsy moth we find _________ type of sex determination.

    (a)

    ZW - ZZ

    (b)

    XX - XY

    (c)

    XX - XO

    (d)

    ZO - ZZ

  4. The RNA polymerase of prokaryotes binds with ____________ factor to initiate polymerization.

    (a)

    rho

    (b)

    theta

    (c)

    sigma

    (d)

    psi

  5. Continuous consumption of alcohol affects ___________

    (a)

    Heart

    (b)

    Kidney

    (c)

    liver

    (d)

    brain

  6. Yellow fever is a _____________ type of disease.

    (a)

    Neurotropic

    (b)

    Viscerotropic

    (c)

    Pneumotropic

    (d)

    Dermotropic

  7. A pair of fungal disease _____________

    (a)

    Amoebiasis, Kala-azar

    (b)

    Candidiasis, Athlete's foot

    (c)

    Ascariasis, Filariasis

    (d)

    Poliomyelitis, Amoebiasis

  8. Identify the free living nitrogen fixing bacteria______

    (a)

    Azotobacter

    (b)

    Rhizobium

    (c)

    Glomus

    (d)

    Ideonella sakaiensis

  9. Which is not an indice of species diversity?

    (a)

    Alpha diversity

    (b)

    Beta diversity

    (c)

    Delta diversity

    (d)

    Gamma diversity

  10. Assertion (A): Pleiotropic gene affects multiIple traits
    Reason (R): ABO blood group is an example for Pleiotropism

    (a)

    A and R are correct R explains A

    (b)

    A and R are incorrect

    (c)

    A is correct R is incorrect

    (d)

    A is incorrect R is correct

*****************************************

TN 12th Standard Biology free Online practice tests

Reviews & Comments about 12th Standard Biology English Medium Free Online Test Creative 1 Mark Questions - Part Five

Write your Comment