REPRODUCTION

BL-12

12.1 SEXUAL REPRODUCTION IN HUMANS :

• Mammals are unisexual.


• Reproductive system of each organism consists of many

reproductive organs.

• These can be primary sex organs or secondary sex organs.
  
  
  • The primary sex organs are called as gonads. They
  
  
  
  

produce sex cells or gametes and also secrete sex hormones.

• The gonads of males are called a testis, which produce sperms.


• The gonads of females are called as ovaries, which produce ova or

female gametes.

• Secondary sex organs include the reproductive ducts

which transport gametes and reproductive glands which help in

process of reproduction. These organs do not produce gametes.