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 (c) Initially, girls grow than boys. (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) The 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.
ScienceClass 8ICSEAnswered 28 Mar 2026
Answer
Answer
- Sexual maturity is reached at puberty
- The changes which occur in boys and girls at puberty are brought about by various hormones
- Initially, girls grow faster than
- The changes occurring in body and mind during adolescence are a natural part of growing
- The features which help us to distinguish between a mature boy and a girl are called secondary sexual characteristics.
- The onset of puberty is controlled by hormones
- The menstrual cycle in women is controlled by hormones
- Each normal body cell in humans contains23 pairs of chromosomes out of which 1pair is of sex
- X and Y chromosomes are called sex
- Early marriage and motherhood cause health problems in the mother and the child
- The protective foods are fruits and vegetables
- Thyroid and adrenals secrete their hormones when they receive instructions from pituitary gland through its hormones.
- Metamorphosis in amphibians is brought about by thyroxine
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