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Human Reproduction Test - 33

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Human Reproduction Test - 33
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  • Question 1
    1 / -0
    At menopause, there is a rise in urinary excretion of
    Solution
    D. Both A and C
    EXPLANATION: Estrogen hormone is used to inhibit the production of FSH and LH in females. During menopause, the level of estrogen in the blood decreases, so estrogen can not inhibit the FSH and LH at the time of menopause. Therefore, FSH and LH are produced after menopause in large quantities, which are excreted out in the urine.
  • Question 2
    1 / -0
    Development of secondary sexual characters in females are controlled by

    Solution
    Oestrogens regulate growth and development of female accessory reproductive organs, secondary sexual character and sexual behavior.
  • Question 3
    1 / -0
    Maximum growth of human feotus is done in 
    Solution
    During the 8th month, the baby's organs are fully developed like fingernails, brain except for lungs.
    So, the correct answer is option D.
  • Question 4
    1 / -0
    The correct set of a single endocrine gland hormone is

    Solution
    Oxytocin and ADH is secreted from posterior pituitary, vasopressin is another name of ADH.
  • Question 5
    1 / -0
    The third phase in the development of a mammal is 
  • Question 6
    1 / -0
    The cleavage having incomplete division (partial cleavage) of egg is known as 
    Solution
    Depending on the amount of yolk present in the egg, cleavage can be holoblastic or meroblastic.
    Holoblastic is the total or entire cleavage, while meroblastic is the incomplete or partial cleavage.
    In the absence of large concentration of yolk, holoblastic cleavage is seen.
    In the presence of a large amount of yolk in the fertilized egg cell, the cell undergoes partial or meroblastic cleavage.
  • Question 7
    1 / -0
    In frog, holoblastic cleavage is not found due to 
    Solution
    Frog has telolecithal egg. Here, yolk is more concentrated on one end of the egg, the vegetal hemisphere with the cytoplasm plus the nucleus concentrated at the other end, the animal hemisphere. In such kind of eggs, complete or holoblastic cleavage is not possible. So, here, meroblastic cleavage occurs.
    Thus, the correct answer is option B.
  • Question 8
    1 / -0
    Cumulus covers 
  • Question 9
    1 / -0
    The developing embryo shows 
    Solution

    The embryo shows multiplicative growth as this kind of growth refers to the increase in the number of cells of the organisms due to mitotic cell division. And as the embryo is developing, it will have many mitotic divisions. Hence, this multiplicative growth is also called as embryonic growth. Thus, the correct answer is option (D) - 'Multiplicative growth'.

  • Question 10
    1 / -0
    The eggs of insects are 
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