Olympiad Science - Reaching the Age of Adolescence
Exam Duration: 45 Mins Total Questions : 30
Which of the following statements is true
- (a)
Boys reach puberty at an earlier age than girls
- (b)
Girls reach puberty earlier than boys
- (c)
At the end of rapid growth, girls are normally heavier than boys
- (d)
Between the age of 4 to 12, girls grow faster than boys.
Which of the following represents growth periods labelled as P,Q and R
- (a)
P-Infancy, Q-Childhood, R-Old age
- (b)
P-Infancy,Q-Childhood, R-Adolescence
- (c)
P-Adulthood,T-Adolescence, R-Oldage
- (d)
P-Childhood, Q-Infancy, R-Adolescence
When does adolescence occur
- (a)
0 to 3 years
- (b)
3 to 13 years
- (c)
11 to 18 years
- (d)
18 to 45 years
During which of the following stages of growth in height is maximum
- (a)
At the end of adulthood
- (b)
Before puberty
- (c)
At the beginning of old age
- (d)
At the beginning of adulthood
What is the role of sperms in reproduction
- (a)
To stimulate ovum
- (b)
To fertilize the egg
- (c)
To form foetus
- (d)
To initiate changes in male during puberty
What causes changes in females at the time of puberty
- (a)
Sex cells
- (b)
Enzymes
- (c)
Nutrients
- (d)
Sex hormones
Which of the following will occur in females at puberty?
- (a)
Ovulation
- (b)
Enlargement of breasts
- (c)
Broadening of hips
- (d)
All of these
A girl has menstruation on the 6th day of the month. When is ovulation most likely to occur
- (a)
15th - 17th day
- (b)
18th - 20th day
- (c)
23rd - 25th day
- (d)
27th - 28th day
In girls, secondary sexual characteristics develop between
- (a)
9 and 11 years
- (b)
11 and 14 years.
- (c)
15 and 18 years
- (d)
19 and 21 years
Why is a diet rich in proteins essential at puberty
- (a)
For supplying sufficient energy
- (b)
For the formation of new cells during growth
- (c)
the formation of strong bones and teeth
- (d)
protection from diseases
Which of the following is NOTa secondary sexual characteristic feature of girls?
- (a)
The enlargement of breasts
- (b)
The deepening of voice
- (c)
The menstruation begins
- (d)
The growth of hair at armpit
Which of the following is/are true of secondary sexual characteristics of boys?
- (a)
Growth of facial hair
- (b)
Development of bones and muscles
- (c)
Production of sperms
- (d)
All of these
The menstrual cycle stops in a women at about 50 years old. The woman is said to have reached
- (a)
puberty
- (b)
menopause
- (c)
menarche
- (d)
adolescence
Which of the following does not take place during the final stage of the menstrual cycle
- (a)
Further thickening of the uterine lining
- (b)
Repairand growth of the uterine lining
- (c)
Ovulation
- (d)
Both (B) and (C)
Which of these hormones is secreted by endo- crine gland located on the top of kidneys
- (a)
Adrenaline
- (b)
Insulin
- (c)
Progesterone
- (d)
Testosterone
Which of the following pairs of hormones and minerals is associated with the occurrence of goitre
- (a)
Minerals Hormones Iron Insulin - (b)
Minerals Hormones Iodine thyroxine - (c)
Minerals Hormones Calcium thyroxine - (d)
Minerals Hormones Phosphorus Adrenaline
Incomplete development of male secondary sexual characteristics is caused due to deficiency in?
- (a)
Estrogen
- (b)
Progesterone
- (c)
Adrenaline
- (d)
Testosterone
Which of the following hormones initiates metamorphosis in insects
- (a)
Thyroxine
- (b)
Insulin
- (c)
Growth hormone
- (d)
Adrenaline
Which chromosomes determine the sex of an individual
- (a)
Autosomes
- (b)
Allosomes
- (c)
Plasmid
- (d)
Giant chromosomes
What is the legal age for boys and girls to get married in our country
- (a)
18 years for boys, 21 years for girls
- (b)
21 years for boys, 18 years for girls
- (c)
23 years for boys, 20 years for girls
- (d)
25 years for boys, 18 years for girls
Which of the following is called the master gland in the human body
- (a)
Thyroid
- (b)
Adrenal
- (c)
Islets of langerhans
- (d)
Pituitary
Which of the following transports hormones from the place of origin to the place of target
- (a)
Ducts
- (b)
Blood
- (c)
Nerves
- (d)
All of these
Arjun kept losing weight even though he was taking his meals regularly. He felt thirsty all the time. When the doctor tested Arjun's urine, the test showed a high concentration of glucose. What disease is Arjun suffering from
- (a)
Goitre.
- (b)
Cancer
- (c)
Diabetes mellitus
- (d)
Cirrohsis of the liver.
Which of the following factors determine the sex of the offspring in humans?
- (a)
Mother's sex chromosomes
- (b)
Father's sex chromosomes
- (c)
Mother's vegetative chromosomes
- (d)
Father's vegetative chromosomes
The given table has various stages
W - The ovum dies within 24 hours after ovulation. X - The uterus wall thickens with blood vessels. Y - The uterus wall breaks down. Z - The ovary discharges an ovum |
Which of these sequence is correct of the menstrual cycle?
- (a)
W,Y,X,Z
- (b)
X,Z,W,Y
- (c)
Y,W,Z,X
- (d)
Z,X,Y,W
What do X,Yand Z represent in the figure given below
- (a)
X-Ovum, V-testes, Z-Ovulation
- (b)
X-Testes, Y-Ovum, Z-Implantation
- (c)
X-Ovum, Y-Testes, Z-Implantation
- (d)
X-Testes, V-Ovum, Z-Fertilization
Which of the following parts secretes testosterone?
- (a)
Tunica albuginea
- (b)
Interstitial cells
- (c)
Germinal epithelium
- (d)
Sertoli cells of testes
Which of the following endocrine glands is nearest to the heart
- (a)
Thyroid
- (b)
Pancreas
- (c)
Thymus
- (d)
Adrenal
Which of the following represents the composition of female destined zygote in human beings
- (a)
22 + X
- (b)
44 + XV
- (c)
33 + Y
- (d)
44 + XX
Which of the following body fluids does not transmit HIV ?
- (a)
Blood
- (b)
Breast milk
- (c)
Tears
- (d)
Semen