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ISC Grade XII Biology - Q1

Quiz by dimple v

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26 questions
Show answers
  • Q1

    1. Sertolicells are regulated by the hormone:-

    FSH

    Prolactin

     LH

    Prolactin

    30s
  • Q2

    2. The cell which undergoes meiosis I during spermatogenesis is:-

    Primary spermatocyte

    Spermatid

    Spermatogonium

    Secondary spermatocyte

    30s
  • Q3

    3. Which of the following is hormone releasing:-

    LNG-20

    Cu 7

    Multiload 375

    Lippes loop

    30s
  • Q4

    4. The test tube baby programme employs which one of the following technique:-

    GIFT

    ICSI

    IUI

    ZIFT

    30s
  • Q5

    5. The method of directly injecting a sperm into ovum in assisted reproductive technology is called:-

    ICSI

    GIFT

    ZIFT

    ET

    30s
  • Q6

    6. The method of transferring ovum and sperm into fallopian tube

    for fertilization is called:-

     GIFT

    ZIFT

    ICSI

    ET

    30s
  • Q7

    7. Assertion: Cleavage starts as zygote moves through the isthmus.

         Reason: Inner cell mass gets differentiated as the embryo.

    If both the assertion and the reason are true and the reason is a correct explanation of the assertion.

    If both the assertion and reason are true but the reason is not a correct explanation of the assertion.

     If the assertion is true but the reason is false.

     If both the assertion and reason are false.

    30s
  • Q8

    8. Classical example of point mutations:-

    Cystic fibrosis

    Sickle cell anemia

    Hemophilia

    Phenylketonuria

    30s
  • Q9

    9. Human embryo at 8 to 16 celled stage is called:-

    Blastocyst

    All of the above

    Morula

    Trophoblast

    30s
  • Q10

    10. Read the following statements.

    i) Each testes has 25 compartments called testicular lobules.

    ii) Each testicular lobule contains one to three highly coiled seminiferous tubules in which sperms are produced.

    iii) Sertoli cells provide nutrition to the germ cells.

    iv) Sertoli cells are activated by FSH .

    Which of above statements are incorrect?

    ii) and iv)

    i) and ii)

    iii) and iv)

    only i)

    30s
  • Q11

    11. Administration of which contraceptive device within 72 hours

    of coitus have been found to be very effective as emergency

    contraceptives as they could be used to avoid possible pregnancy

     due to casual unprotected intercourse?

    Both Progestogen estrogen combinations and IUDs

    Progestogen estrogen combinations

    IUDs

    Barriers

    30s
  • Q12

    12. In girls, first event of puberty is called

    Pubarche

    Menarche

    Thelarche

    Menopause

    30s
  • Q13

    13. The trophoblastic cells secrete

    Progesterone

    LH

    hPL

    Hcg

    30s
  • Q14

    14. Which of the following hormones achieves two peaks

    during the menstrual cycle?

    FSH

    LH

    Estrogen

    Progesteron

    30s
  • Q15

    15. Zona pellucida is formed in

    Secondary oocyte

     Primary follicle

    Secondary follicle

    Primary oocyte

    30s

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