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HomeCXC CSEC Integrated ScienceAdaptations and Natural Selection
CXC · CSEC · Integrated Science

Adaptations and Natural Selection
Practice Questions

20 CXC CSEC Integrated Science questions on Adaptations and Natural Selection, each with instant feedback and a full examiner-style mark scheme.

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✨ Revision guide includes key terms, worked examples and exam technique for Adaptations and Natural Selection.

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Question 1 · 1 mark · Difficulty 1/3

A farmer in Jamaica noticed that some of his goats had thicker coats than others. After several cold seasons in the Blue Mountains, the goats with thicker coats survived and reproduced more successfully. Which term BEST describes this process?

  1. Artificial selection
  2. Natural selection
  3. Genetic engineering
  4. Selective breeding
Show answer & explanation
✓ Answer: BNatural selection
Award 1 mark for identifying that natural environmental conditions (cold seasons) determined which organisms survived and reproduced. A is incorrect — artificial selection involves deliberate human choice of breeding pairs. C is incorrect — genetic engineering involves direct manipulation of DNA in a laboratory. D is incorrect — selective breeding is another term for artificial selection, which requires human intervention.
Question 2 · 1 mark · 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

  1. structural adaptation
  2. behavioural adaptation
  3. physiological adaptation
  4. camouflage
Show answer & explanation
✓ Answer: Astructural 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.
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20 questions · 25 min · free

CXC CSEC Integrated Science: Adaptations and Natural Selection FAQ

How many CXC CSEC Integrated Science questions on Adaptations and Natural Selection are there on Kramizo?
Kramizo currently has 20 exam-board-aligned practice questions on Adaptations and Natural Selection for CXC CSEC Integrated Science, with new questions added every week. Each question gives you instant feedback and a full examiner-style mark scheme that tells you exactly what would earn marks on a real CXC paper. The questions span the full difficulty range — from straightforward recall (level 1) right up to multi-step reasoning and evaluation (level 3) — so the bank works for first-pass revision and final exam-week stress testing alike.
Is Kramizo free for CXC CSEC students preparing for Integrated Science?
Yes — completely free. Every student gets 45 questions a day on the free plan, with no card required and no trial countdown. That free quota works across every subject and every topic in our bank, so you can mix Adaptations and Natural Selection practice with other Integrated Science topics or even switch to a totally different CXC subject without paying anything. Kramizo's optional Pro plan removes the daily cap and adds detailed progress analytics, but the free tier is the real product — used by thousands of GCSE, IGCSE and CSEC students.
Are the Adaptations and Natural Selection questions aligned to the official CXC CSEC Integrated Science syllabus?
Every question is written against the published CXC CSEC Integrated Science specification, including the exact command words (state, describe, explain, calculate, evaluate, etc.), mark allocations, and difficulty tier you'd see on a real CXC paper. Explanations are written in the style of official examiner mark schemes — they tell you what is being awarded marks and why distractors are wrong, not just whether you got it right. The bank is continually refined to match the latest syllabus updates from CXC.
How is Adaptations and Natural Selection typically tested on CXC CSEC Integrated Science papers?
Adaptations and Natural Selection appears across multiple question types on real CXC CSEC Integrated Science papers — most commonly as multiple-choice questions in the objective section, structured short-answer questions in the main paper, and occasionally as part of an extended response. Kramizo's practice bank reflects that mix: 4-option MCQs, true/false statements, fill-in-the-blank key terms, multi-select questions, and ordering questions. Working through the bank gives you exposure to every question style examiners actually use.

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