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Biology · 2023 · 3 marks
CBSE 2023 · Region 3 · Set 2 · Q22
The diagram given below shows the events occurring in an ovary during Oogenesis in a human female. (a) Identify 'X'. Mention the time when the…
The diagram given below shows the events occurring in an ovary during Oogenesis in a human female.
(a)
Identify 'X'. Mention the time when the process occurs in a human female.
(b)
Identify 'Y'. When and how is it formed ?
(c)
Name the hormone produced by 'Z'.
Marking-scheme solution
Primary follicle
During fetal stage
(b)
Secondary Oocyte
At follicular phase/ between $\displaystyle 6$-$\displaystyle 13$ day of menstrual cycle
Tertiary follicle grows in size and completes its first meiotic division and
this unequal division results in a large haploid secondary Oocyte and a tiny first polar body.(c) Progesterone
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CBSE Class 12 Biology past-paper question from the 2023 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.