Q1 · Difficulty 1/3
The variety of species in an ecosystem is:
- biodiversity
- abundance
- biomass
- distribution
Show answer & explanation
✓ Answer: A — biodiversity
Biodiversity is the range of species.
Pearson Edexcel International · IGCSE · Biology
Free Pearson Edexcel International IGCSE Biology
Practice Paper
8 mixed-difficulty practice questions in the style of real Pearson Edexcel International IGCSE papers — answers, mark-scheme-style explanations, and the official exam structure all on one page.
Take a Mini Mock →What the real Pearson Edexcel International IGCSE Biology paper looks like
Paper 1
Objective and short-answer questions covering the breadth of the specification.
Paper 2
Structured and extended-response questions testing depth of understanding.
Total exam time varies by board and tier — typically 2.5 to 3.5 hours.
Grading: See the official board specification for the current grading scale.
Grading: See the official board specification for the current grading scale.
Mini practice paper: 8 questions
Mixed-difficulty questions from across the Biology syllabus. Tap "Show answer" after each to check yourself.
Q2 · Difficulty 1/3
The maintenance of a constant internal environment is:
- photosynthesis
- digestion
- osmosis
- homeostasis
Show answer & explanation
✓ Answer: D — homeostasis
Homeostasis keeps internal conditions stable.
Q3 · Difficulty 1/3
Green plants in a food chain are:
- producers
- consumers
- decomposers
- predators
Show answer & explanation
✓ Answer: A — producers
Producers make their own food.
Q4 · Difficulty 2/3
The test for starch uses iodine, which turns:
- green
- blue-black
- brick red
- purple
Show answer & explanation
✓ Answer: B — blue-black
Iodine turns blue-black with starch.
Q5 · Difficulty 2/3
Aerobic respiration takes place in the:
- ribosomes
- chloroplasts
- mitochondria
- nucleus
Show answer & explanation
✓ Answer: C — mitochondria
Mitochondria are the site of aerobic respiration.
Q6 · Difficulty 2/3
Most absorption of digested food occurs in the:
- stomach
- large intestine
- mouth
- small intestine
Show answer & explanation
✓ Answer: D — small intestine
The small intestine absorbs nutrients.
Q7 · Difficulty 2/3
Red blood cells carry oxygen using:
- insulin
- keratin
- collagen
- haemoglobin
Show answer & explanation
✓ Answer: D — haemoglobin
Haemoglobin binds oxygen.
Q8 · Difficulty 2/3
The test for carbon dioxide uses limewater, which turns:
- milky (cloudy)
- blue
- red
- colourless
Show answer & explanation
✓ Answer: A — milky (cloudy)
CO₂ turns limewater milky.
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Pearson Edexcel International IGCSE Biology FAQ
What does the Pearson Edexcel International IGCSE Biology exam look like?
The Pearson Edexcel International IGCSE Biology exam is structured across 2 components. Paper 1: Objective and short-answer questions covering the breadth of the specification. Paper 2: Structured and extended-response questions testing depth of understanding. Total exam time varies by board and tier — typically 2.5 to 3.5 hours.
Can I download a free Pearson Edexcel International IGCSE Biology past paper?
Real Pearson Edexcel International past papers are published directly by Pearson Edexcel International on their official website. Kramizo doesn't redistribute copyrighted past papers, but we do generate free AI-written practice papers in the exact same style — same command words, same difficulty tier, same mark conventions. Use this practice paper as warm-up, then time yourself on official past papers before exam day.
How is Pearson Edexcel International IGCSE Biology graded?
See the official board specification for the current grading scale. Kramizo's practice questions are tagged with difficulty 1-3 mapping roughly to the lower, middle, and top grade boundaries you'll encounter in the real exam.