What is meant by the ‘primary sexual characteristics’ in humans? State two primary sexual characteristics in boys and two in girls.
Answers
definition
Primary sexual characteristics refer to changes to the sexual organs themselves (uterus, vagina, penis, and testes).
charactersitics
Primary sexual characteristics are present at birth and comprise the external and internal genitalia (e.g., the penis and testes in males and the vagina and ovaries in females).
Primary sexual characteristics
Explanation:
Primary sexual characteristics refers to the male and female reproductive system. These characteristics are present at birth and comprise of the reproductive organs specific to their gender. The reproductive organs include both external genetalia and internal reprodutive organs.
Primary sexual characteristics in boys: Penis, testes.
Primary sexual characteristics in girls: Vagina, uterus.
Secondary sexual characteristics are the physical changes which develop at puberty and help in distinguishing between boys and girls at the age of 11 to 15.