What name is given to those sexual characteristics in humans :

(a) which are present in babies at birth?

(b) which develop in mature boys and girls?

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Solution

(a) Primary sexual characteristic-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).
(b) Secondary sexual characteristics- Any of the physical characteristics that differentiate male and female individuals, as distribution of hair or fat on the body, breast and muscle development, deepening of the voice, etc., that are not directly related to reproduction and usually appear at puberty.

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Name the hormone which develops secondary sexual characteristics :

(a) in females (girls).

(b) in males (boys).

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(e) The features which help us to distinguish between a mature boy and a girl are called___sexual characteristics.

(f) The onset of puberty is controlled by___

(g) Menstrual cycle in women is controlled by___

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(k) The protective foods are___and___

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(a) What is the name of the surgical method of birth control in human males in which the sperm ducts are cut and ligated (tied) at both ends?
(b) What is the name of the surgical method of birth control in human females in which the oviducts are cut and ligated (tied) at both ends?
(c) Name the contraceptive device used by the human males which act as a sheath over the male organ and traps the sperms in it.
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What name is given to those sexual characteristics in humans : (a) which are present in babies at birth? (b) which develop in mature boys and girls?

What name is given to those sexual characteristics in humans :

(a) which are present in babies at birth?

(b) which develop in mature boys and girls?