What name is given to those sexual characteristics in humans:

(b) which develops in mature boys and girls?

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Solution

Solution - Secondary sexual characteristics

Sexual characteristics that develop in mature boys and girls are called secondary sexual characteristics.

Secondary sexual characteristics are the changes in body parts of boys and girls due to action of hormones that help distinguish between the two.

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Similar questions

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?

Name the hormone which develops secondary sexual characteristics :

(a) in females (girls).

(b) in males (boys).

(a) What is meant by the 'primary sexual characteristics' in humans? State two primary sexual characteristics in boys and two in girls.

(b) What is meant by 'secondary sexual characteristics' in humans? Explain with the help of two examples.

(a) State two secondary sexual characteristics in mature boys and two in mature girls.

(b) Which of the following are secondary sexual characteristics ?

Ovaries, Moustache, Penis, Broad hips, Vagina, Beard, Breasts, Adam's Apple, Wide shoulder, Uterus, Tastes, Deeper voice.

Fill in the following blanks with suitable words :

(a) Sexual maturity is reached at___

(b) The changes which occur in boys and girls at puberty are brought about by various___

(d) The changes occurring in body and mind during adolescence are a natural part of___up.

(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___

(h) Each normal body cell in humans contains___pairs of chromosomes out of which___pair is of sex chromosomes.

(i) X and Y chromosomes are called___chromosomes.

(j) Early marriage and motherhood cause health problems in the___and the___

(k) The protective foods are___and___

(l) Thyroid and adrenals secrete their hormones when they receive instructions from___gland through its hormones.

(m) Metamorphosis in amphibians is brought about by___hormone.

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