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Biology Grade 12 ISC

Quiz by Diksha Chaturvedi

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30 questions
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  • Q1

    Find the odd one out.

    Lactiferous duct

    Clitoris

    Labia majora

    Mons pubis

    30s
  • Q2

    About which day in a normal human menstrual cycle  does rapid secretion of  LH [popularly called LH surge] normally occurs?

    5th day

    20th day

    11th day

    14th day

    30s
  • Q3

    In the absence of acrosome, the sperm: 

    cannot get energy

    cannot penetrate the egg

    cannot swim 

    cannot get food 

    30s
  • Q4

    Assertion: The myometrium undergoes cyclical changes during menstrual cycle.                                                                                                                      Reason: The endometrium exhibits weak contractions during of the baby. 

    Both assertion and reason are true and reason is the correct explanation of assertion.

    Assertion is true,but reason is false.

    Bothassertion and reason are false.

    Both assertion and reason are true, but reason is not the correct explanation of assertion 

    10s
  • Q5

    Prostate gland is present-

    around urethra 

    on ureter 

    on kidney

    on testis

    10s
  • Q6

    Portion of placenta contributed by the embryo is the:

    Yolk sac

    Allantois

    Amnion

    chorion 

    10s
  • Q7

    Sperms produce an enzymatic substance for dissolving egg membrane called

    Androgen

    Estrogen

    hyaluronidase

    Hyaluronic acid

    10s
  • Q8

    The Leydig cells found in the human body are the secretory source of:

    Progesterone

    Glucagon 

    Androgens

    Intestinal mucus

    10s
  • Q9

    The spermatogonia undergo division to produce sperms by the process of spermatogenesis. Choose the correct one with reference to above

    Primary spermatocytes divide by mitotic cell division

    Spermatozoa are transformed into spermatids

    Spermatogonia have 46 chromosomes and alwaysundergo meiotic cell division

    Secondary spermatocytes have 23 chromosomes and undergo second meiotic division.

    30s
  • Q10

    The technique called Gamete Intra Fallopian Transfer (GIFT) is recommended for those females

    Who cannot retain the foetus inside uterus

     Who cannot provide suitable environment for fertilization

    Who cannot produce an ovum.

     Whose cervical canal is too narrow to allow the passage for the sperms

    30s
  • Q11

    In which year was ‘Family Planning’ programe launched?

    1905

    1925

    1951

    1947

    30s
  • Q12

    .................is not a sexually transmitted disease.

    Gonorrhoea       

    Syphilis

    Trichomoniasis

    Encephalitis        

    30s
  • Q13

    Sexually transmitted disease symptomized by the development of chancre on the genitalsis caused by the infection of  .................

    hepatitis B virus

     Neisseria gonorrhoeae

    human immunodeficiency virus

    Treponemapallidum

    30s
  • Q14

    Days of periodic abstinence are:

    17–20 days of menstrual phase.

    10–11 days of menstrual phase.

    10–17days of menstrual phase.

    20–28 days of menstrual phase. 

    30s
  • Q15

    Fitness according to Darwin refers to:

    strength of an individual

    useful variation in population

    number of species in a community

    reproductive fitness of an organism

    30s

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