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How Do Organisms Reproduce

Tutormate > CBSE Syllabus-Class 10th Biology > How Do Organisms Reproduce

06 Puberty

PUBERTY:

Human body undergoes a lot of changes, physically as well as psychologically, as part of growth.
Adolescence is the life stage between childhood and adulthood during which the rate of growth is much faster.
It marks the onset of reproductive phase in boys and girls.
Puberty is the age in which the sex hormones or gametesbegin to be produced and the boy and girl become sexually mature.
Puberty commences the sexual maturity in adolescents.Puberty tends to start earlier in females (girls) than in males (boys).
Generally boys attain puberty at the age of 13 to 14 years while girls reach puberty at a comparatively lower age of 10 to 12 years.
On attaining puberty, the male gonads called testes start producing male gametes called sperms.
On attaining puberty, the female gonads called ovaries stat producing female gametes called ova (or eggs).

CHANGES WHICH OCCUR IN BOYS AT PUBERTY:

Hair grows under armpits and in public regions (genital area) between the thighs.
Hair also grows on other parts of the body like chest and face (moustache, beard).
The body becomes more muscular due to the development of muscles.
The voice depends (or cracks).
Chest and shoulders broaden.

CHANGES WHICH OCCUR IN GIRLS AT PUBERTY:

Hair grows under armpits and public region .This change is the same as in boys).
Mammary glands (or breasts) develop and enlarge.
The hips broaden.
Fallopian tubes, uterus and vagina enlarge.
Ovaries start to release eggs.
Menstruation e. the monthly periods start.

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