Kramizo
Log inSign up free
HomeCXC CSEC BiologyLiving Organisms in the Environment
CXC · CSEC · Biology

Living Organisms in the Environment
Practice Questions

20 CXC CSEC Biology questions on Living Organisms in the Environment, each with instant feedback and a full examiner-style mark scheme.

⚡ Start Quiz on Living Organisms in the Environment📖 Read Revision NotesTry one question
✨ Revision guide includes key terms, worked examples and exam technique for Living Organisms in the Environment.

Try 2 sample questions on Living Organisms in the Environment

Question 1 · 1 mark · Difficulty 1/3

Scientists studying a small island in the Grenadines found that as the mongoose population increased, the population of ground-nesting birds decreased significantly. This is an example of which type of interaction?

  1. Mutualism
  2. Commensalism
  3. Predation
  4. Parasitism
Show answer & explanation
✓ Answer: CPredation
Award 1 mark for predation. Predation occurs when one organism (mongoose) hunts and kills another (ground-nesting birds or their eggs) for food. A is incorrect because mutualism benefits both species. B is incorrect because commensalism benefits one species without affecting the other. D is incorrect because parasitism involves one organism living on or in another without immediately killing it.
Question 2 · 1 mark · Difficulty 1/3

Which of the following organisms in a Caribbean coral reef ecosystem is a primary consumer?

  1. Parrotfish feeding on algae
  2. Barracuda feeding on smaller fish
  3. Sea anemone capturing plankton
  4. Elkhorn coral with zooxanthellae
Show answer & explanation
✓ Answer: AParrotfish feeding on algae
Award 1 mark for parrotfish feeding on algae. Primary consumers are herbivores that feed on producers (plants/algae). B is incorrect because barracuda are tertiary consumers (carnivores eating other carnivores). C is incorrect because sea anemones are carnivores feeding on animals (secondary consumers). D is incorrect because coral with zooxanthellae are producers through photosynthesis.
⚡ Start a Quiz on Living Organisms in the Environment
20 questions · 25 min · free

CXC CSEC Biology: Living Organisms in the Environment FAQ

How many CXC CSEC Biology questions on Living Organisms in the Environment are there on Kramizo?
Kramizo currently has 20 exam-board-aligned practice questions on Living Organisms in the Environment for CXC CSEC Biology, 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 Biology?
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 Living Organisms in the Environment practice with other Biology 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 Living Organisms in the Environment questions aligned to the official CXC CSEC Biology syllabus?
Every question is written against the published CXC CSEC Biology 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 Living Organisms in the Environment typically tested on CXC CSEC Biology papers?
Living Organisms in the Environment appears across multiple question types on real CXC CSEC Biology 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.

Lock in Living Organisms in the Environment before exam day.

Start practising in 30 seconds — no card required.

⚡ Start Quiz Free →