Grade 7 : Science (Curiosity) - 6. Adolescence (Set 5)

Question 1

Which of the following scenarios best illustrates the interconnectedness of the endocrine system during puberty, specifically regarding the initiation of secondary sexual characteristics?

Accepted Answer

B) The pituitary gland releases hormones that stimulate the testes/ovaries, which then produce sex hormones, triggering physical changes.

Answer

A) An increase in growth hormone directly leads to the development of facial hair in boys.

Answer

C) Adrenaline surges during stress cause the growth of underarm hair in both sexes.

Answer

D) The thyroid gland's activity is solely responsible for mood swings experienced by adolescents.

Answer

E) Insulin production is directly responsible for the deepening of the voice in boys.

Question 2

A student, Arjun, notices that his younger cousin, Priya (who is 10 years old), is already taller than him, even though he is 12 years old. He is concerned he might not grow much more.

What is the most accurate scientific explanation for this observation concerning adolescent growth spurts?

Accepted Answer

B) Girls typically experience their growth spurt earlier than boys, often between 10-12 years of age.

Answer

A) Boys generally start their growth spurt earlier than girls.

Answer

C) Arjun's height is determined solely by genetics and has nothing to do with puberty timing.

Answer

D) Priya must be consuming a special diet that accelerates growth uniformly.

Answer

E) The observation is incorrect; boys always grow taller than girls at every age.

Question 3

During adolescence, many individuals experience intense emotional fluctuations, often described as mood swings. Which of the following is the primary biological factor contributing to these rapid shifts in mood?

Accepted Answer

C) Hormonal changes directly affecting brain chemistry and neurotransmitter levels.

Answer

A) Increased intake of sugary foods and drinks.

Answer

B) Rapid development of decision-making abilities in the prefrontal cortex.

Answer

D) Excessive social media use and peer pressure.

Answer

E) Lack of sufficient physical exercise.

Question 4

Which statement about the male reproductive system during adolescence indicates a common misunderstanding of its function?

Accepted Answer

D) The prostate gland is primarily responsible for sperm motility.

Answer

A) Sperm production begins during puberty and continues throughout adulthood.

Answer

B) The testes produce both sperm and the hormone testosterone.

Answer

C) Ejaculation is the process by which sperm are released from the body.

Answer

E) The vas deferens transports sperm from the epididymis to the urethra.

Question 5

Adolescence often brings increased activity of sweat and sebaceous glands. What is the most effective long-term strategy for managing the resulting body odor and acne?

Accepted Answer

C) Regular bathing/showering with soap, proper skin care, and maintaining good hygiene habits.

Answer

A) Frequently using strong perfumes and body sprays to mask odors.

Answer

B) Completely avoiding all fatty foods to prevent acne outbreaks.

Answer

D) Relying solely on medicated creams without understanding the underlying causes.

Answer

E) Wearing tight, synthetic clothing to absorb sweat.

Question 6

During puberty, particularly in boys, the voice often deepens. This change is primarily due to:

Accepted Answer

C) The larynx (voice box) growing larger and the vocal cords thickening and lengthening.

Answer

A) An increase in lung capacity, allowing for louder sounds.

Answer

B) The vocal cords becoming shorter and thinner, vibrating at a lower frequency.

Answer

D) Greater development of the facial muscles involved in articulation.

Answer

E) Increased air pressure from the diaphragm during speech.

Question 7

The menstrual cycle in adolescent girls is a complex process. Which statement best describes its overall biological purpose?

Accepted Answer

B) To regularly shed the uterine lining if pregnancy does not occur, preparing for potential future fertilization.

Answer

A) To prepare the body for increased physical strength and muscle development.

Answer

C) To stimulate the growth of secondary sexual characteristics like breast development.

Answer

D) To regulate the timing of growth spurts and bone maturation.

Answer

E) To control emotional stability and mood during adolescence.

Question 8

An adolescent named Maya is invited to a party where some older teenagers are pressuring others to try vaping. Maya feels uncomfortable but also wants to fit in.

Which of the following responses by Maya demonstrates the most mature understanding of her own well-being and social responsibility?

Accepted Answer

C) Politely declining, stating her personal choice not to vape, and suggesting an alternative activity or group to hang out with.

Answer

A) Trying it once to avoid being seen as "boring" and then pretending she liked it.

Answer

B) Telling everyone they are wrong and leaving the party angrily.

Answer

D) Quietly leaving the party without saying anything to anyone.

Answer

E) Encouraging her friends to also try vaping so she doesn't feel alone.

Question 9

Which pair of endocrine glands is most directly involved in initiating and regulating the physical changes of puberty, and how do they interact?

Accepted Answer

C) Hypothalamus and Gonads (Testes/Ovaries): Hypothalamus stimulates Pituitary, which then stimulates Gonads to produce sex hormones.

Answer

A) Thyroid and Adrenal Glands: Thyroid controls growth rate, Adrenal produces stress hormones.

Answer

B) Pancreas and Pituitary Gland: Pancreas regulates blood sugar, Pituitary regulates overall growth.

Answer

D) Pineal Gland and Thymus Gland: Pineal regulates sleep cycles, Thymus is involved in immunity.

Answer

E) Pituitary Gland and Liver: Pituitary controls hormone release, Liver detoxifies the body.

Question 10

Many adolescents become highly conscious of their body image. Which piece of advice regarding nutrition and body image during adolescence is most biologically accurate and psychologically healthy?

Accepted Answer

B) Focus on a balanced diet with nutrient-rich foods, regular physical activity, and accepting natural body changes.

Answer

A) Drastically cut calories and specific food groups to achieve an "ideal" body shape quickly.

Answer

C) Rely on popular fad diets and supplements advertised online for rapid transformation.

Answer

D) Compare one's body frequently with images seen in media and strive to replicate them.

Answer

E) Believe that only certain "perfect" body types are acceptable and healthy.