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IB Biology HL D3.1.13 Hl Puberty Control Questions

Trace hypothalamic GnRH signalling to pituitary FSH/LH and the sex-hormone changes that drive puberty in IB Biology HL D3.1.13.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Explain that hypothalamic GnRH stimulates pituitary FSH/LH release and LH increases sex-hormone production during puberty.

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Study D3.1.13 (HL)—Puberty control conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB Biology HL D3.1.13 Hl Puberty Control Questions question 1

[Maximum number: 1]

What controls the developmental changes during puberty?

I. Increased release of gonadotropin-releasing hormone (GnRH) by the hypothalamus
II. Luteinizing hormone (LH) leading to increased sex hormone production
III. Gonadotropin-releasing hormone (GnRH) triggering the onset of increased luteinizing hormone (LH)

A

I and II only

B

I and III only

C

II and III only

D

I, II and III

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