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تولید اور نشوونما

9 سوالات: ایم ڈی کیٹ حیاتیات، جوابات اور وضاحت کے ساتھ۔

تمام سوالات جوابات کے ساتھ
  1. Fertilisation in humans normally takes place in the:

    • 1 Uterus
    • 2 Fallopian tube
    • 3 Vagina
    • 4 Ovary
    جواب دیکھیں

    درست جواب: Fallopian tube

    The sperm usually meets the egg in the upper part of the fallopian tube.

    غلطی کی اطلاع دیں

  2. Which hormone from the corpus luteum maintains the lining of the uterus?

    • 1 Progesterone
    • 2 Testosterone
    • 3 FSH
    • 4 Oxytocin
    جواب دیکھیں

    درست جواب: Progesterone

    Progesterone keeps the endometrium thick and ready for implantation.

    غلطی کی اطلاع دیں

  3. The surge of luteinising hormone (LH) triggers:

    • 1 Menstruation
    • 2 Ovulation
    • 3 Implantation
    • 4 Lactation
    جواب دیکھیں

    درست جواب: Ovulation

    A sharp rise in LH around the middle of the cycle makes the mature follicle release the egg.

    غلطی کی اطلاع دیں

  4. In males, spermatogenesis occurs in the:

    • 1 Epididymis
    • 2 Prostate gland
    • 3 Seminiferous tubules
    • 4 Vas deferens
    جواب دیکھیں

    درست جواب: Seminiferous tubules

    Sperm are made in the coiled seminiferous tubules of the testes.

    غلطی کی اطلاع دیں

  5. How many sperm cells are formed from one primary spermatocyte?

    • 1 1
    • 2 2
    • 3 4
    • 4 8
    جواب دیکھیں

    درست جواب: 4

    Meiosis I and II give four haploid cells, and each becomes a sperm.

    غلطی کی اطلاع دیں

  6. How many functional egg cells come from one primary oocyte?

    • 1 1
    • 2 2
    • 3 3
    • 4 4
    جواب دیکھیں

    درست جواب: 1

    Divisions of an oocyte are uneven. Only one large egg forms and the other cells are small polar bodies.

    غلطی کی اطلاع دیں

  7. Double fertilisation is a feature of:

    • 1 Gymnosperms
    • 2 Angiosperms
    • 3 Ferns
    • 4 Mosses
    جواب دیکھیں

    درست جواب: Angiosperms

    In flowering plants one sperm fertilises the egg and the other joins the central cell.

    غلطی کی اطلاع دیں

  8. In flowering plants, the endosperm forms when a sperm nucleus fuses with:

    • 1 The egg cell
    • 2 Two polar nuclei
    • 3 The synergids
    • 4 The antipodal cells
    جواب دیکھیں

    درست جواب: Two polar nuclei

    A sperm nucleus fuses with the two polar nuclei, giving a triploid endosperm tissue that feeds the embryo.

    غلطی کی اطلاع دیں

  9. Which hormone is detected by a standard pregnancy test?

    • 1 Oestrogen
    • 2 hCG
    • 3 Insulin
    • 4 Prolactin
    جواب دیکھیں

    درست جواب: hCG

    Human chorionic gonadotropin (hCG) is made by the developing placenta and appears in the urine of pregnant women.

    غلطی کی اطلاع دیں

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