Q.1: Dwarfism is caused due to the ____________ of growth hormones.
Q.2: Which of the following secondary sexual characteristics take place in girls during the adolescence phase ?
i) Ovaries start to release eggs.
ii) Hips broaden and become more prominent.
iii) Body becomes more muscular.
iv) A high pitched voice develops.
a) i and iv
b) i, ii and iii
c) i, ii and iv
Q.3: ____________ glands are also called “Ductless glands”.
Q.4: The sexual characters which are present since birth are called _______________________.
a) primary sexual characters
b) secondary sexual characters
c) tertiary sexual characters
Q.5: The stage of growth and maturity from about 2 years to 11 years of age is called _____________.
Q.6: If the sperm having X chromosome fertilises the egg, then it develops into a ___________ child.
Q.7: Which of the following statements is/are incorrect about “autosomes” ?
a) They are 46 in number.
b) They are identical in males and females.
Q.8: __________________ hormone stimulates testes and ovaries to release testosterone and oestrogen respectively.
Q.9: Menstruation usually occurs _______ days after ovulation.
Q.10: _____________ is necessary for the formation of thyroxine hormone.