The corpus luteum formed during the post-ovulatory phase of the menstrual cycle survives for only . . . . . . weeks in the absence of fertilization.
- AFour
- BThree
- CTwo
- DOne
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The average age at which human females reach menopause is............ (in $years$)
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View SolutionMatch the columns.
Column $I$ Column $II$ $(a)$ $6-14$ days $(1)$ Menstrual phase $(b)$ $1-5$ days $(2)$ Polar body formation $(c)$ $15-28$ days $(3)$ Proliferative phase $(4)$ Secretory phase (Endometrium is prepared for implantation)
| Column $I$ | Column $II$ |
|---|---|
| $(a)$ $6-14$ days | $(1)$ Menstrual phase |
| $(b)$ $1-5$ days | $(2)$ Polar body formation |
| $(c)$ $15-28$ days | $(3)$ Proliferative phase |
| $(4)$ Secretory phase (Endometrium is prepared for implantation) |
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View SolutionProcesses such as menarche,menopause,and reproductive cycles are controlled by:
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