Q1 · Difficulty 1/3
The part of the cell that controls its activities is the:
- cytoplasm
- nucleus
- membrane
- vacuole
Show answer & explanation
✓ Answer: B — nucleus
The nucleus controls the cell.
CXC · CSEC · Integrated Science
Free CXC CSEC Integrated Science
Practice Paper
8 mixed-difficulty practice questions in the style of real CXC CSEC papers — answers, mark-scheme-style explanations, and the official exam structure all on one page.
Take a Mini Mock →What the real CXC CSEC Integrated Science paper looks like
Paper 1 (Section A)
60 multiple-choice questions, 1 mark each. 75 minutes. Tests knowledge across the whole syllabus.
Paper 2
Structured short-answer + 1 extended response question. Section A is compulsory; Section B has a choice. Approximately 2 hours 10 minutes.
School-Based Assessment (SBA)
Coursework component graded by the teacher, externally moderated. Worth ~20-30% of the final grade depending on subject.
Total exam time: ~3.5 hours across Paper 1 and Paper 2 sittings.
Grading: Grades: I (highest) to VI (lowest). A grade of III or above is typically required for further study.
Grading: Grades: I (highest) to VI (lowest). A grade of III or above is typically required for further study.
Mini practice paper: 8 questions
Mixed-difficulty questions from across the Integrated Science syllabus. Tap "Show answer" after each to check yourself.
Q2 · Difficulty 1/3
The Earth's centre is the:
- core
- plate
- crust
- mantle
Show answer & explanation
✓ Answer: A — core
The core is at the centre.
Q3 · Difficulty 1/3
The structure that controls the cell is the:
- nucleus
- cytoplasm
- wall
- membrane
Show answer & explanation
✓ Answer: A — nucleus
The nucleus controls the cell.
Q4 · Difficulty 1/3
The layer below the crust is the:
- atmosphere
- ocean
- core
- mantle
Show answer & explanation
✓ Answer: D — mantle
The mantle lies below the crust.
Q5 · Difficulty 1/3
Which planet in the solar system is closest to the Sun?
- Mars
- Earth
- Venus
- Mercury
Show answer & explanation
✓ Answer: D — Mercury
Award 1 mark for correctly identifying Mercury as the innermost planet. C is incorrect — Venus is the second planet from the Sun. A is incorrect — Mars is the fourth planet. B is incorrect — Earth is the third planet from the Sun.
Q6 · Difficulty 1/3
The Anolis lizard species found in Trinidad have developed different toe pad sizes depending on whether they live on tree trunks or thin branches. This is an example of
- structural adaptation
- behavioural adaptation
- physiological adaptation
- camouflage
Show answer & explanation
✓ Answer: A — structural adaptation
Award 1 mark for recognising that toe pad size is a physical body structure that helps the organism survive. B is incorrect — behavioural adaptations involve actions, not body structures. C is incorrect — physiological adaptations involve internal body processes like metabolism. D is incorrect — camouflage is a specific type of structural adaptation for avoiding predators, not for gripping surfaces.
Q7 · Difficulty 1/3
What is the function of the root system in plants?
- Producing flowers
- Releasing oxygen
- Photosynthesis
- Anchoring the plant and absorbing water and minerals from soil
Show answer & explanation
✓ Answer: D — Anchoring the plant and absorbing water and minerals from soil
Roots anchor plants in the soil and absorb water and dissolved minerals through root hair cells, which have a large surface area.
Q8 · Difficulty 1/3
The outermost layer of the Earth is the:
- mantle
- atmosphere
- core
- crust
Show answer & explanation
✓ Answer: D — crust
The crust is the outer layer.
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CXC CSEC Integrated Science FAQ
What does the CXC CSEC Integrated Science exam look like?
The CXC CSEC Integrated Science exam is structured across 3 components. Paper 1 (Section A): 60 multiple-choice questions, 1 mark each. 75 minutes. Tests knowledge across the whole syllabus. Paper 2: Structured short-answer + 1 extended response question. Section A is compulsory; Section B has a choice. Approximately 2 hours 10 minutes. School-Based Assessment (SBA): Coursework component graded by the teacher, externally moderated. Worth ~20-30% of the final grade depending on subject. Total exam time: ~3.5 hours across Paper 1 and Paper 2 sittings.
Can I download a free CXC CSEC Integrated Science past paper?
Real CXC past papers are published directly by CXC 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 CXC CSEC Integrated Science graded?
Grades: I (highest) to VI (lowest). A grade of III or above is typically required for further study. 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.