Given below is a graph with respect to levels | vedclass

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(B) In the provided graph,curve '$A$' represents the levels of estrogens during the menstrual cycle,which peaks before ovulation (around day $14$). Cu

Vedclass · Accepted Answer

'$A$' is estrogens and '$B$' is hCG.

Vedclass · Answer

(B) In the provided graph,curve '$A$' represents the levels of estrogens during the menstrual cycle,which peaks before ovulation (around day $14$). Curve '$B$' shows a sharp rise after day $28$,which is characteristic of human chorionic gonadotropin $(hCG)$ in a pregnant female. $hCG$ is produced by the placenta after implantation to maintain the corpus luteum,which in turn continues to secrete progesterone to support pregnancy. Therefore,'$A$' corresponds to estrogens and '$B$' corresponds to $hCG$.

Hormone	Site of production
$A$. $hCG$ and $hPL$	$(ii)$ Placenta
$B$. Progesterone	$(iii)$ Corpus luteum
$C$. Androgens	$(iv)$ Leydig cells
$D$. Relaxin	$(i)$ Ovary

Given below is a graph with respect to levels of hormones in a pregnant female. Select the correct option.

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Match the hormone with its site of production:
Hormone Site of production
$A$. $hCG$ and $hPL$ $(ii)$ Placenta
$B$. Progesterone $(iii)$ Corpus luteum
$C$. Androgens $(iv)$ Leydig cells
$D$. Relaxin $(i)$ Ovary

Placenta is the region where:

During the development of an embryo,which of the following occurs first?

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