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Where is relaxin produced?

Important Questions on How do Organisms Reproduce

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Science>Biology>How do Organisms Reproduce>Sexual Reproduction in Human Beings
Placenta of human being is
(I) Yolk sac placenta
(II) Chorioallantoic placenta
(III) Zonary placenta
(IV) Discoidal placenta
(V) Haemochorial placenta
(VI) Indeciduate placenta
(VII) Deciduate placenta
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Science>Biology>How do Organisms Reproduce>Sexual Reproduction in Human Beings
In human beings, at the end of 12 weeks (first trimester) of pregnancy, the following is observed:
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Science>Biology>How do Organisms Reproduce>Sexual Reproduction in Human Beings
Assertion (A): During the formation of placenta, some layers of uterus are eroded and during parturition, extensive haemorrhage occurs
Reason (R): Placenta of man is described as haemo endothelial placenta
HARD
Science>Biology>How do Organisms Reproduce>Sexual Reproduction in Human Beings
List the three hormones produced in women only during pregnancy. What happens to the levels of oestrogen and progesterone during pregnancy?
EASY
Science>Biology>How do Organisms Reproduce>Sexual Reproduction in Human Beings
Several hormones like hCG, hPL, estrogen, progesterone are produced by
MEDIUM
Science>Biology>How do Organisms Reproduce>Sexual Reproduction in Human Beings
Which ONE of the following statements is CORRECT about placenta?
EASY
Science>Biology>How do Organisms Reproduce>Sexual Reproduction in Human Beings
Which of the following secretes the hormone, relaxin, during the later phase of pregnancy?
MEDIUM
Science>Biology>How do Organisms Reproduce>Sexual Reproduction in Human Beings
Name any one hormone released by placenta during pregnancy.
MEDIUM
Science>Biology>How do Organisms Reproduce>Sexual Reproduction in Human Beings
Morphogenetic movements take place predominantly during the following embryonic stage:
HARD
Science>Biology>How do Organisms Reproduce>Sexual Reproduction in Human Beings
From an early amphibian embryo the cells that would give rise to skin in adults were transplanted into the developing brain region of another embryo. The transplanted cells developed into brain tissue in the recipient embryo. What do you infer from this experiment?
MEDIUM
Science>Biology>How do Organisms Reproduce>Sexual Reproduction in Human Beings
Describe the formation of the placenta during the pregnancy.
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Science>Biology>How do Organisms Reproduce>Sexual Reproduction in Human Beings
The substance that helps in relaxing the muscles and ligaments of pelvic organs during parturition:
EASY
Science>Biology>How do Organisms Reproduce>Sexual Reproduction in Human Beings

Write the differences between blastula and morula.

MEDIUM
Science>Biology>How do Organisms Reproduce>Sexual Reproduction in Human Beings

Match the following columns and select the correct option:-

Column-I Column-II
(a) Ovary (i) Human chorionic gonadotropin
(b) Placenta (ii) Estrogen & Progesterone
(c) Corpus luteum (iii) Androgens
(d) Leydig cells (iv) Progesterone only
MEDIUM
Science>Biology>How do Organisms Reproduce>Sexual Reproduction in Human Beings
What is called differentiation?
HARD
Science>Biology>How do Organisms Reproduce>Sexual Reproduction in Human Beings
After which month of the embryo development in humans, the growth of the placenta slows down?
EASY
Science>Biology>How do Organisms Reproduce>Sexual Reproduction in Human Beings
Embryo after the first 8 weeks of development is called _____.
EASY
Science>Biology>How do Organisms Reproduce>Sexual Reproduction in Human Beings
Select the correct option describing gonadotropin activity in a normal pregnant female:
MEDIUM
Science>Biology>How do Organisms Reproduce>Sexual Reproduction in Human Beings
Describe pregnancy and embryonic development.
HARD
Science>Biology>How do Organisms Reproduce>Sexual Reproduction in Human Beings

Match the following:

  List I   List II
A Totipotent cell I Haemopoietic stem cells
B Pluripotent cell II Muscle stem cell
C Multipotent cell III 8 cell stage blastocyst
D Unipotent cell IV Inner cell mass
    V Mast cell