Science
Question 1.Adolescence is the period of
(a) 5 to 10 years
(b) 11 to 19 years
(c) 22 to 28 years
(d) 30 to 40 years
Question 2. When a sperm having X-chromosome fuses with the ovum, the
child born will be
(a) male
(b) female
(c) male as well as female twin
(d) it depends on the chance of fusion
Question 3. How many pairs of Chromosomes are found in nuclei of their cells?
(a) 22 pairs
(b) 23 pairs
(c) 24 pairs
(d) 25 pairs
Question 4. Children gain height during
(a) adolescence
(b) endocrine
(c) balanced food
(d) menarche
Question 5. Testes secrete
(a) thyroxin
(b) estrogen
(c) testosterone
(d) iodine
Question 6. Adam’s apple is
(a) enlarged larynx
(b) mammary glands
(c) apple of adam
(d) red apple
Question 7. The chemical substances which are secreted from endocrine glands
are called
(a) puberty
(b) hormones
(c) estrogen
(d) adolescence
Question 8. Out of these which one determines the sex of the baby?
(a) Hormones
(b) Chloroplast
(c) Chromosomes
(d) Pituitary gland
Question 9. What is the stoppage of menstruation called?
(a) Menarche
(b) Menopause
(c) Gametes
(d) Insulin
Question 10. Which hormone is secreted by adrenal glands?
(a) Adrenalin
(b) Insulin
(c) Testosterone
(d) Estrogen
Question 11. Reproduction age in women starts when their
(a) menstruation starts
(b) breasts start developing
(c) body weight increases
(d) height increases
Question 12. Which is male gonads?
(a) Hair
(b) Chest
(c) Moustache
(d) Testis
Question 13. The beginning of menstruation at puberty is called
(a) ovulation
(b) menstruation
(c) menarche
(d) menopause
Question 14. In males, the sex chromosome consists
(a) one X and one Y
(b) both X and X
(c) both Y and Y
(d) one M and one X
Question 15. Production of thyroxin requires
(a) sodium
(b) magnesium
(c) iodine
(d) bromine
Question 16. The period of life, when the body undergoes changes, leading to
reproductive maturity, is called
(a) childhood
(b) adolescence
(c) Grown up
(d) Old age
Question 17. The human body undergoes several changes during adolescence.
These changes mark the onset of
(a) Puberty
(b) Prematurity
(c) Post adolescence
(d) ageing
Question 18. Adam’s apple is prominent in
(a) Boys of any age
(b) Adolescent girls
(c) Girls of any age
(d) Adolescent boys
Question 19. Larynx is also called
(a) Voice box
(b) Sound box
(c) Black box
(d) All of the above
Question 20. Acne and pimples on the face is due to secretion of
(a) bile from liver
(b) Oil glands during puberty
(c) Enzymes in the digestive tract
(d) Tear from tear glands
Question 21. Testosterone is a hormone found in human
(a) Children
(b) males and females
(c) Females only
(d) Males only
Question 22. The first menstrual flow is called
(a) Menstruation
(b) Mensuration
(c) Menarche
(d) Menopause
Question 23. Menopause occurs at the age of
(a) 10-12 years in boys
(b) 45-50 years in men
(c) 10-12 years in girls
(d) 45-50 years in women
Question 24. When a sperm containing Y chromosome fertilizes an egg with X
chromosome, the zygote develops into a _____ child
(a) Female
(b) Either a male or female
(c) Male
(d) No child
Question 25. The change from larvae to adult is called
(a) Metabolism
(b) Metamorphosis
(c) Metastasis
(d) Morphology
Question 26. Which of the following should an adolescent choose for his/her
meal?
(a) Chips, noodles and aerated beverages
(b) Vegetable cutlets, chips and lemonade
(c) Rice, noodles and popcorn
(d) Chapathi, dal and vegetables
Question 27. The reproductive phase of a woman lies between her _____ and
menopause.
(a) menstrual cycle
(b) menstruation
(c) menarche
(d) ovulation
Question 28. Number of sex chromosomes in a human kidney cell is
(a) One pair
(b) Two pairs
(c) Three pairs
(d) Four pairs
Question 29. A female gamete carries ________ chromosome(s).
(a) one Y
(b) one X and one Y
(c) two X
(d) one X
Question 30. HIV virus will not be present in which of the following?
(a) Blood
(b) Sweat
(c) Breast milk
(d) Semen
Question 31. Puberty in females begins at the age of _____.
(a) 11 to 13 years
(b) 16 to 18 years
(c) 14 to 16 years
(d) 18 to 21 years
Question 32. During menstrual bleeding, the fluid that comes out of the vagina
contains _____ along with blood.
(a) Embryo
(b) ovum
(c) sperm
(d) zygote
Question 33. The time period when the body undergoes changes, leading to
reproductive maturity is called______.
(a) Growth
(b) senescence
(c) development
(d) adolescence
Question 34. Which of the following viruses causes AIDS?
(a) H1N1 virus
(b) Zika virus
(c) HIV
(d) Rhinovirus
Question 35. In girls, the ovaries and eggs become mature and ovaries begin to
release ovum by the process of ______.
(a) Ovulation
(b) fertilisation
(c) oogamy
(d) oogenesis
Question 36. Which among the following is the change seen in girls during
puberty?
(a) Broader shoulders
(b) Cracking of voice
(c) Breast development
(d) Growth of facial hair
Question 37. A human gamete has ________ sex chromosome(s).
(a) Four
(b) Half
(c) Two
(d) One
Question 38. The pituitary gland is located below the ______.
(a) Thalamus
(b) medulla oblongata
(c) vas deferens
(d) hypothalamus
Question 39. Deficiency of iodine in our diet leads to a condition called:
(a) Diabetes insipidus
(b) Goitre
(c) Gigantism
(d) Infertility
