12th Class Biology Human Reproduction Question Bank Case Based - Human Reproduction

  • question_answer
    Direction: Read the following and answer the questions from given below
    Parturition or childbirth is the process of delivering the baby and placenta from the uterus to the vagina to the outside world. Also called labour and delivery. Parturition comes from the Latin Parturine, 'to be ready to bear young' and is related to partus, the past participle of parere, 'to produce'. A typical pregnancy lasts 40 weeks from the first day of your Last Menstrual Period (LMP) to the birth of the baby (parturition). It is divided into three stages called trimesters, first trimester, second trimester and third trimester. The foetus undergoes many changes throughout maturation.
    (v)
    The following statements are drawn as conclusions from the above data.
    I. High level of HCG stimulates the synthesis of oestrogen and progesterone.
    II. High level of hCG stimulates the thickening of endometrium.
    III. The level of oestrogen and progesterone becomes high during pregnancy.
    Choose from above the correct conclusions.

    A) I and II             

    B) II and III

    C) I and III            

    D) I, II and III

    Correct Answer: C

    Solution :

    [c] Statements I and III are correct. Statements II is incorrect as high levels of oestrogen stimulates the thickening of the endometrium.


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