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Reaching the Age of Adolescence Class 8 MCQs Questions with Answers
Solving Reaching the Age of Adolescence Multiple Choice Questions of Class 8 Science Chapter 10 MCQ can be of great help to students as they will be aware of all the concepts. These MCQ Questions on Reaching the Age of Adolescence Class 8 with answers pave for a quick revision, thereby helping you learn more about this subject.
Question 1.
Reproductive age in women starts when their:
(a) menstruation starts
(b) breasts start developing
(c) body weight increases
(d) height increases
Answer
(b) breasts start developing
Reproductive age in women starts when their menstruation starts.
Question 2.
The right meal for adolescents consists of:
(a) chips, noodles, coke
(b) chapati, dal, vegetables
(c) rice, noodles and burger
(d) vegetable cutlets, chips and lemon drink
Answer
(b) chapati, dal, vegetables
The right meal for adolescents consists of chapati, dal, vegetables.
Question 3.
Which of the following combination of chromosomes lead to the birth of a baby girl:
(a) XX
(b) XY
(c) X
(d) Y
Answer
(a) XX
Combination of chromosomes XX lead to the birth of a baby girl.
Question 4.
Which of the following combination of chromosomes lead to the birth of a baby boy:
(a) XX
(b) XY
(c) X
(d) Y
Answer
(b) XY
Combination of chromosomes XY lead to the birth of a baby boy.
Question 5.
All human beings have pairs of chromosomes in the nuclei of their cells.
(a) 22
(b) 2
(c) 23
(d) 46
Answer
(c) 23
23. All human beings have 23 pairs of chromosomes in the nuclei of their cells. Out of this 22 pairs of chromosomes are called autosomes. 1 pair is called sex chromosome.
Question 6.
The unfertilised egg always has X chromosome.
(a) two
(c) four
(b) one
(d) none of these
Answer
(b) one
The unfertilized egg always has one X chromosome.
Question 7.
‘Goitre’ is a disease of
(a) adrenal gland
(c) pancreas
(b) thyroid gland
(d) none of these
Answer
(b) thyroid gland
‘ Go itre ’ is a disease of thyroid gland.
Question 8.
Which or ht ronowing proIdes iron to our body:
(a) leafy vegetabks
(b) citrus
(c) meat
(d) all of these
Answer
(a) leafy vegetabks
Leafy vegetables, citrus, meat all of these provide iron to our body.
Question 9.
Adreanlia hormone is produced by:
(a) pituitary gland
(b) thyroid gland
(c) adrenal gland
(d) pancreas
Answer
(c) adrenal gland
Adrenalin hormone is produced by adrenal gland.
Question 10.
Whea the sperm contributes a Y-chromosome to the egg (ovum) at fertllisatin than the zygole would develop into a:
(a) femaict,hild
(b) malechild
(c) either female or male child
(d) none of these
Answer
(b) malechild
Male child is developed when the sperm contributes a Y chromosome to the egg (ovum) at fertilisation.
Question 11.
Which of the following Is incorrecl:
(a) Girls have high pitched voice
(b) Boys have a deep voice
(c) The voice box of girls is larger than that of boys
(d) The voice box in boys can be seen as a wouudmg part of the throat called Adam’s apple
Answer
(c) The voice box of girls is larger than that of boys
The voice box of girls is smaller than that of boys.
Question 12.
The changes which occur at adolescence are controlled by:
(a) enzymes
(b) balanced diet
(c) hormones
(d) none of these
Answer
(c) hormones
The changes which occur at adolescence are controlled by hormones.
Question 13.
Which of the following b balmced dirt:
(a) icc-cream and cold drink
(b) meat and egg
(c) roti/rice, dal, vegetables
(d) none of these
Answer
(c) roti/rice, dal, vegetables
Roti/ Rice, dal, vegetables is balanced diet.
Question 14.
The legal age for marriage of girls in our coaltry is:
(a) 21 years
(b) 18 years
(c) 20 years
(d) 16 years
Answer
(b) 18 years
18 years is the legal age for marriage of girls in our country.
Question 15.
AIDS is teased by a dangerous:
(a) virus HIV
(b) virus VIH
(c) protozoa
(d) bacteria
Answer
(a) virus HIV
AIDS is caused by a dangerous virus HIV.
Question 16.
Hormones reaches to different parts:
(a) with lymph
(b) by ducts
(c) with blood
(d) none of these
Answer
(c) with blood
Hormones reaches to different parts of the body with blood.
Question 17.
In our body hormones are formed in:
(a) endocrine glands
(b) exocrine glands
(c) kidneys
(d) none of these
Answer
(a) endocrine glands
In our body hormones are formed in endocrine glands.
Question 18.
Which of the following endocrine gland is called master gland:
(a) pituitary gland
(b) adrenals glands
(c) thyroid gland
(d) pancreas
Answer
(a) pituitary gland
Pituitary gland is called master gland.
Question 19.
Which gland secretes insulin:
(a) thyroid gland
(b) pancreas
(c) adrenals
(d) thymus gland
Answer
(b) pancreas
Pancreas secretes insulin.
Question 20.
Which of the following controls sugar in blood:
(a) sex hormone
(b) pancreas
(c) growth hormone
(d) insulin
Answer
(d) insulin
Insulin controls sugar in blood.
Question 21.
Which of the following disease is causes by deficiency of iodine:
(a) goitre
(b) diabetes
(c) scurvy
(d) beri-beri
Answer
(a) goitre
Goitre disease is caused by deficiency of iodine.
Question 22.
Which of the following is secreted by endocrine glands:
(a) harmones
(b) enzymes
(c) digestive juices
(d) all of the above
Answer
(a) harmones
Hormones is secreted by endocrine glands.
Question 23.
Which of the following hormones is secreted by pituitary gland:
(a) insulin
(b) thyroxine
(c) growth
(d) adrenalin
Answer
(c) growth
Growth hormone is secreted by pituitary gland.
Question 24.
The necessary element for the formation of thyroxine hormone is:
(a) iron
(b) iodine
(c) calcium
(d) magnesium
Answer
(b) iodine
Iodine element is necessary for the formation of thyroxine hormone.
Question 25.
Which of the following gland secretes thyroxine hormone:
(a) adrenal
(b) thyroid
(c) pituitary
(d) pancreas
Answer
(b) thyroid
Thyroid gland secretes thyroxine hormone.
Question 26.
Which of the following hormone helps at the time of excitement, tear, tension etc:
(a) adrenalin
(b) insulin
(c) growth
(d) thyroxine
Answer
(a) adrenalin
Adrenalin hormone helps at the time of excitement, tear, tension etc.
Question 27.
Menarche is:
(a) beginning of menstrual flow
(b) stoppage of menstrual flow
(c) attachment of embryo with the uterus
(d) none of these
Answer
(a) beginning of menstrual flow
Menarche is beginning of menstrual flow.
Question 28.
Menopause is:
(a) beginning of menstrual flow
(b) stoppage of menstrual flow
(c) attachment of embryo with the uterus
(d) none of these
Answer
(b) stoppage of menstrual flow
Menopause is stoppage of menstrual flow.
Question 29.
‘Puberty’ is the age at which the:
(a) reproductive system stops
(b) reproductive system becomes functional
(c) person starts talking
(d) none 6 these
Answer
(b) reproductive system becomes functional
‘Puberty’ is the age at which the reproductive system becomes functional.
Question 30.
Adolescents should be careful about what they eat, because:
(a) proper diet develops their brains
(b) proper diet is needed for the rapid growth taking place in their body
(c) adolescents feels hungry all the time
(d) taste buds are well-developed in teenagers.
Answer
(b) proper diet is needed for the rapid growth taking place in their body
Adolescents should be careful about what they eat, because proper diet is needed for the rapid growth taking place in their body.
Match the Column-A with Column-B:
Question 1.
| Column-A | Column-B |
| (a) Pituitary gland | (i) Testoterone |
| (b) Thyroid | (ii) Insulin |
| (c) Pancreas | (iii) Estrogen |
| (d) Adrenal | (iv) Thyroxine |
| (e) Ovary | (v) Growth hormone |
| (d) Testis | (vi) Adrenaline |
Answer
| Column-A | Column-B |
| (a) Pituitary gland | (v) Growth hormone |
| (b) Thyroid | (iv) Thyroxine |
| (c) Pancreas | (ii) Insulin |
| (d) Adrenal | (vi) Adrenaline |
| (e) Ovary | (iii) Estrogen |
| (d) Testis | (i) Testoterone |
Question 2.
| Column-A | Column-B |
| (a) XX chromosomes in zygote | (i) Male hormone |
| (b) XY chromosomes in zygote | (ii) Female hormone |
| (c) Estrogen | (iii) Male child |
| (d) Testosterone | (iv) Female child |
Answer
| Column-A | Column-B |
| (a) XX chromosomes in zygote | (iv) Female child |
| (b) XY chromosomes in zygote | (iii) Male child |
| (c) Estrogen | (ii) Female hormone |
| (d) Testosterone | (i) Male hormone |
Question 3.
| Column-A | Column-B |
| (a) Proteins | (i) Carrots |
| (b) Carbohydrates | (ii) Dal |
| (c) Vitamins | (iii) Leafy vegetables |
| (d) Iron | (iv) Roti |
Answer
| Column-A | Column-B |
| (a) Proteins | (ii) Dal |
| (b) Carbohydrates | (iv) Roti |
| (c) Vitamins | (i) Carrots |
| (d) Iron | (iii) Leafy vegetables |
State whether the following statements are True or False:
Question 1.
The voice of girls becomes high pitched at puberty.
Answer
True
Question 2.
The unfertilised egg is called foetus.
Answer
False
Question 3.
The egg cells are larger than sperms.
Answer
True
Question 4.
In human females, one mature egg is produced every four weeks by each of the ovaries.
Answer
False
Question 5.
At puberty, the larynx beings to grow.
Answer
True
Question 6.
Humans become capable of reproduction after puberty sets in.
Answer
True
Question 7.
Pancreas secretes thyroxine.
Answer
False
Question 8.
AIDS is caused by HIV virus.
Answer
True
Question 9.
The mother is responsible for the sex of her child.
Answer
False
Question 10.
Metamorphosis in insects is controlled by insect hormones.
Answer
True
Question 11.
Chips and tinned snacks have adequate nutritional value.
Answer
False
Question 12.
Adrenalin hormone is necessary for growth of a person.
Answer
False
Question 13.
Deficiency of hormone insulin causes ‘diabetes’.
Answer
True
Question 14.
A female has two X chromosomes.
Answer
True
Question 15.
The sex chromosome of the father determine the sex of an unborn baby.
Answer
True
Fill in the blanks:
Question 1.
In male, the sex chromosomes consists of one X and one ………………………… chromosome.
Answer
Y
Question 2.
Hormones are produced by ………………………….
Answer
endocrine glands
Question 3.
The master gland in the body is …………………………
Answer
pituitary gland
Question 4.
………………………… disease is caused due to the deficiency of hormone thyroxine.
Answer
Goitre
Question 5.
Protruding voice box in boys is called …………………………
Answer
Adam’s apple
Question 6.
Glands without ducts are …………………………
Answer
endocrine
Question 7.
Endocrine gland attached to brain is …………………………
Answer
pituitary
Question 8.
Female hormone is …………………………
Answer
estrogen
Question 9.
Male hormone is ………………………….
Answer
testosterone
Question 10.
Another term for teenage is …………………………
Answer
adolescence
Question 11.
………………………… is the term for changes at adolescence.
Answer
Puberty
Question 12.
Voice box is …………………………
Answer
larynx
Question 13.
Pancreatic hormone is …………………………
Answer
insulin
Question 14.
Hormones reaches through blood stream at …………………………
Answer
target sites
Question 15.
………………………… gland secretes thy roxine
Answer
Thyroid
Question 16.
………………………… is the secretion of endocrine glands.
Answer
Hormones
Question 17.
………………………… is the first menstrual flow at puberty.
Answer
Menarche
Question 18.
………………………… is stoppage of menstruation.
Answer
Menopause
Question 19.
Fertilised egg gets embedded in the ………………………… for further development.
Answer
uterus
Question 20.
Thyroid and adrenals secrete their hormones when they receive orders from the ………………………… through its hormones.
Answer
pituitary
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