CBSE Questions for Class 8 Biology Reaching The Age Of Adolescence Quiz 3 - MCQExams.com

After the rain, tadpoles were found swimming in a pond but not the frogs. This is due to:
  • Lack of pituitary hormones
  • Lack of sex hormones
  • Lack of thyroxine
  • Lack of nitrogen in water
The age of adolescence is
  • 9-12 years
  • 13-19 years
  • 15-20 years
  • 19-24 years
The period of physiological development from puberty to adulthood is called as
  • Growth.
  • Adolescence.
  • Infancy.
  • None of the above.
The function of thyroxine hormone in frog is to control _______.
  • Growth hormone
  • Metamorphosis
  • Reproductive organs
  • Endocrine glands
Intellectual development occurs during
  • Early stage of adolescence
  • Middle stage of adolescence
  • Late adolescence
  • All of the above
Which of the following is an indication of adolescence growth spurt?
  • Growth in height and weight
  • Adulthood
  • Change in skin
  • None of the above
An unfertilized human ovum has:
  • X and Y chromosomes
  • X and X chromosomes
  • X and Y chromosomes
  • One X chromosome
Which of the following can help in healthy development of adolescents?
  • Teenage counselling
  • Communication workshops
  • Positive relationship with parents and teachers
  • All of these
Period of adolescence means the Period between
  • 12 to 18 years age
  • 15 to 45 years age
  • 15 to 24 years age
  • 45 to 80 years age
Which of the following hormones regulate growth and metamorphosis in insect?
  • Juvenile hormone
  • Brain hormone
  • Ecdysone
  • Prothoracicotropic
Person 'A' is having XX chromosome and person 'B' has XY chromosome. Which option is correct for these persons?
  • Person A is female
  • Person A is male
  • Person B is female
  • None of the above
Which is male sex hormone?
  • Estrogen
  • Adrenaline
  • Testosterone
  • Progesterone
Fill in the blank:
At _____________, male sex organs like the testes and penis develop completely.
  • Adolescence
  • Puberty
  • Birth
  • None of the above
State whether the given statement is True or False:
With the onset of puberty, in both, boys and girls, hair grows under the arms and in the region above the thighs or the pubic region.
  • True
  • False
Fill in the blank:
Hormones are chemical substances secreted by the ________________.
  • Endocrine system
  • Exocrine system
  • Brain
  • Heart
Fill in the blank:
At _____________, female sex organs like the ovar develop completely.
  • Reaching teenage
  • Puberty
  • Birth
  • None of the above
The master gland which controls the secretion of all hormones is
  • Pineal
  • Adrenal
  • Sweat
  • Pituitary
State whether the given statement is True or False:
The capacity for maturation and production of gametes lasts for a much longer time in males than in females.
  • True
  • False
When does the brain have the greatest capacity for learning in one's life?
  • Right after birth
  • Adolescence
  • Puberty
  • After the 20s
Look at the given image and choose which one of the given statements is incorrect.
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  • A female has two X chromosomes, while a male has one X and one Y chromosome.
  • The unfertilised egg always has one X chromosome.
  • The belief that the mother is responsible for the sex of her baby is completely correct and to blame her for this is totally justified.
  • If the sperm contributes a Y chromosome to the egg (ovum) at fertilisation, the zygote would develop into a male child.
In which case does the breakdown of the thickened uterine wall takes place?
  • If fertilization occurs
  • If fertilization does not occur
  • If the egg does not mature
  • None of the above
State whether the given statement is True or False:
Puberty can also be termed as adolescence.
  • True
  • False
State whether the given statement is true or false:
Females are responsible for the sex determination of the child.
  • True
  • False
Fill in the blanks:
When a mature egg is released, the wall of the __________ becomes thick so as to receive the egg, in case it is _______________ and begins to develop.
  • uterus, not fertilized
  • ovary, fertilized
  • uterus, fertilized
  • ovary, not fertilized
Fill in the blank:
Menstruation occurs once in about _____ to ____ days. 
  • 28 to 30
  • 30 to 32
  • 26 to 28
  • 32 to 34
Provide the correct order in which the menstrual cycle occurs:
i) Release of the egg.
ii) Thickening of the uterine wall.
iii) Breakdown of the uterine wall if pregnancy does not occur.
iv) The maturation of the egg.
  • iv)- i)- ii)- iii)
  • i)- ii)- iii)- iv)
  • iii)- iv)- i)- ii)
  • ii)- iv)- i)- iii)
State whether the given statement is True or False:
In females, the monthly shedding of the uterine wall and the matured egg, in case fertilization does not occur is termed as menstruation.
  • True
  • False
At what age do females reach puberty?
  • 10- 12 years
  • 19-20 years
  • 45-50 years
  • At birth
Fill in the blank:
In case the egg is fertilised, it begins to divide and then gets ________________ in the uterus for further development.
  • ruptured
  • fixed
  • mature
  • embedded

The hormone adrenaline helps the body to adjust to stress when one is very
  • Angry
  • Embarrassed
  • Worried
  • All of the above
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