Ovulation can be detected by

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(A) Ovulation is the process of releasing a secondary oocyte from the ovary. It can be detected by several physiological changes:$1$. Basal body tempe

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Rise in basal body temperature

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(A) Ovulation is the process of releasing a secondary oocyte from the ovary. It can be detected by several physiological changes:$1$. Basal body temperature $(BBT)$ rises by approximately $0.5^{\circ}F$ to $1.0^{\circ}F$ after ovulation due to the thermogenic effect of progesterone.$2$. The cervical mucus becomes thin, clear, and stretchy (spinnbarkeit), and when dried on a slide, it exhibits a characteristic 'fern pattern' due to high estrogen levels.$3$. Urinary excretion of estrogen metabolites (like estradiol) increases significantly just before ovulation.Since options $A$, $B$, and $C$ are all valid indicators, in a single-choice context, the rise in $BBT$ is a classic clinical indicator.

Column-$I$	Column-$II$
$(1)$ Testis	$(a)$ Provides nutrition to sperms
$(2)$ Ovary	$(b)$ Primary male sex organ
$(3)$ Theca interna	$(c)$ Synthesis of testosterone
$(4)$ Sertoli cells	$(d)$ Synthesis of estrogen
$(5)$ Leydig cells	$(e)$ Primary female sex organ

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Match the following columns:
Column-$I$ Column-$II$
$(1)$ Testis $(a)$ Provides nutrition to sperms
$(2)$ Ovary $(b)$ Primary male sex organ
$(3)$ Theca interna $(c)$ Synthesis of testosterone
$(4)$ Sertoli cells $(d)$ Synthesis of estrogen
$(5)$ Leydig cells $(e)$ Primary female sex organ

$A$: After menopause,the levels of blood gonadotropins rise markedly.
$R$: At the time of menopause,all the ovarian follicles are converted into follicular atresia,and the ovaries do not respond to the gonadotropins.

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