Question
Spermatogenesis in human males is a hormone regulated process. Justify.

Answer

Hormonal control of spermatogenesis:Spermatogenesis is initiated at the age of puberty by the gonadotropin releasing hormone (GnRH) secreted by the hypothalamus.
The increased levels of GnRH stimulate the anterior pituitary which then secretes the FSH (follicle stimulating hormone) and LH (luteinising hormone). FSH stimulates Sertoli cells to secrete some factors which help in spermiogenesis.
LH acts on the Leydig cells and causes the secretion of testosterone from the testes.

Flow chart showing the hormonal control of the human male reproductive system.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Give the location and one function of the following receptors
(i) Mechanoreceptors (ii) Statoacoustic receptors (iii) Baroreceptors
Which greenhouse gas is mainly responsible for global warming?
Illustrate briefly downstream processing.
How is waterlogging caused? How does it affect the crop plants?
Explain how the inflow of large amount nutrients like phosphates and nitrates into the water body drastically affect the aquatic life there. Name the phenomenon responsible.
OR
'Fish mortality increases with the influx of nutrients in a freshwater body.' Write two reasons. How will the influx of nutrients affect the BOD level of this water body?

OR
How is it that the mortality rate of fish increases downstream from the point of sewage discharge into a water body? Explain.
Choose two pairs of homologous structures from the following and mention why they are so called?
  1. Hearts of humans and monkeys.
  2. Eyes of Octopus and mammals.
  3. Thorns of Bougainvillea and tendrils of Cucurbits.
  4. Flippers of penguins and dolphins.
What are the uses of vaccine?
Certain molecular processes are given in column (A). Provide the terms given to these processes in column (B), after selecting them from the terms:
Recombination, gene regulation, prokaryotic transcription, eukaryotic transcription, translation, replication, gene transfer, DNA fingerprinting
S.No.
Column A
Column B
(i)
DNA → DNA
 
(ii)
DNA → hRNA
 
(iii)
mRNA → Protein
 
(iv)
Repressor Protein + Operator → No transcription
 
List the properties of the nerve fibres.
Plenty of algal bloom is observed in a pond in your locality.
  1. Write what has caused this bloom and how does it affect the quality of water.
  2. Suggest a preventive measure.