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IB Biology HL D3.1 Reproduction Question Bank

Practise IB Biology HL D3.1 with evidence-led questions on gamete formation, fertilization, reproductive hormones, pregnancy, development and contraception.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • explain gamete formation, fertilization and embryo development using meiosis, hormones and cell division
  • compare male and female reproductive pathways using structures, cycles, hormones and gene expression
  • analyse reproductive data to infer inheritance, implantation, pregnancy or contraceptive effects

Covered syllabus points

D3.1.1—Sexual vs. asexual reproductionD3.1.2—Role of meiosis and gamete fusionD3.1.3—Male vs. female sexesD3.1.4—Human reproductive system anatomyD3.1.5—Ovarian and uterine cyclesD3.1.6—Fertilization in humansD3.1.7—In vitro fertilization (IVF)D3.1.8—Sexual reproduction in flowering plantsD3.1.9—Insect-pollinated flower featuresD3.1.10—Promoting cross-pollinationD3.1.11—Self-incompatibility mechanismsD3.1.12—Seed dispersal and germinationD3.1.13 (HL)—Puberty controlD3.1.14 (HL)—GametogenesisD3.1.15 (HL)—Preventing polyspermyD3.1.16 (HL)—Blastocyst and implantationD3.1.17 (HL)—Pregnancy testingD3.1.18 (HL)—Placenta roleD3.1.19 (HL)—Hormonal controlD3.1.20 (HL)—Hormone replacement therapy (HRT)

D3.1 Reproduction question 1

[Maximum number: 1]

Which diagram(s) represent(s) processes used in asexual reproduction?

Figure for Question D3.1 Reproduction question 1 — IB Biology HL
A

I only

B

I and II only

C

II only

D

I, II and III

D3.1 Reproduction question 2

[Maximum number: 4]

Members of a species typically all have the same number of chromosomes.

Explain the need for both fusion of gametes and meiosis in a sexual life cycle.

D3.1 Reproduction question 3

[Maximum number: 18]

Question (a)

(a)

Draw a labelled diagram of the male reproductive system.

[ 4 ]

Question (b)

(b)

Outline the process of in vitro fertilization (IVF).

[ 6 ]

Question (c)

(c)

Explain how the structure and functions of the placenta maintain pregnancy.

[ 8 ]
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