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STD 12 - 2. human reproduction — Biology STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceBiologySTD 12 - 2. human reproduction1 Mark
MCQ
Select the incorrect statement.
  • ✓
    $LH$ and $FSH$ decrease gradually during the follicular phase.
  • B
    $LH$ triggers secretion of androgens from the Leydig cells.
  • C
    $FSH$ stimulates the sertoli cells which help in spermiogenesis.
  • D
    $LH$ triggers ovulation in ovary.
✓

Answer

Correct option: A.
$LH$ and $FSH$ decrease gradually during the follicular phase.
a
(a) : During follicular phase $FSH$ secretion increases. Follicular phase (proliferative phase) usually includes cycle days $6-­13$ or $14$ in a $28$ days cycle. The follicle stimulating hormone $(FSH)$ secreted by the anterior lobe of the pituitary gland stimulates the ovarian follicle to secrete estrogens.

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