Follicle-stimulating hormones (FSH) and luteinizing hormones (LH) are secreted by gonadotropin releasing hormones from the hypothalamus .These hormones are involved in the regulation of the process of spermatogenesis. FSH acts on sertoli cells, whereas LH acts on leydig cells of the testis and stimulates the process of spermatogenesis.
Define external fertilization. Mention its disadvantages.
Secondary producers are
(a) Herbivores
(b) Producers
(c) Carnivores
(d) None of the above
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one is FSH & the other is LH or Interstitial Cells Stimulating Horomone(ICSH)