- e.g., In males : Vasa efferentia, epididymis, seminal
vesicles, ejaculatory duct, urethra etc. In females : Fallopian tube,uterus, vagina, mammary glands etc.- Accessory or external sec characters help to distinguish the two
sexes of a species externally.
- e.g., In male : Muscular body, more height, low pitched voice,
moustaches etc.
In female : High pitched voice, breast development, lateral pubichairs etc.
- Puberty : Beginning of sexual maturity is known as puberty.
- At this stage primary sex organs start functioning.
- Secondary sex organs develop dully under the influence of
sex hormones produced by primary sex organs.- In the stage of puberty body growth is very rapid.
- It occurs at the age of 10 - 14 years in girls and 13 - 15 years in
boys.