Kramizo
Log inSign up free
HomeCXC CSEC Human and Social BiologyVariation: continuous and discontinuous variation, causes of variation
CXC · CSEC · Human and Social Biology

Variation: continuous and discontinuous variation, causes of variation
Practice Questions

20 CXC CSEC Human and Social Biology questions on Variation: continuous and discontinuous variation, causes of variation, each with instant feedback and a full examiner-style mark scheme.

⚡ Start Quiz on Variation: continuous and discontinuous variation, causes of variation📖 Read Revision NotesTry one question
✨ Revision guide includes key terms, worked examples and exam technique for Variation: continuous and discontinuous variation, causes of variation.

Try 2 sample questions on Variation: continuous and discontinuous variation, causes of variation

Question 1 · 1 mark · Difficulty 1/3

Which of the following is the best example of discontinuous variation in humans?

  1. A. Height of students in a class
  2. B. Mass of newborn babies
  3. C. ABO blood group
  4. D. Foot size of adults
Show answer & explanation
✓ Answer: CC. ABO blood group
Discontinuous variation shows distinct categories with no intermediate forms. ABO blood group places individuals into one of four discrete groups (A, B, AB, or O). Height, mass, and foot size all show a continuous range of values with intermediates.
Question 2 · 1 mark · Difficulty 1/3

A student measures the handspan of 200 classmates and plots the data. Which graph shape would most likely be produced?

  1. A. A bar chart with two distinct bars
  2. B. A bell-shaped curve
  3. C. A pie chart with four equal segments
  4. D. A straight horizontal line
Show answer & explanation
✓ Answer: BB. A bell-shaped curve
Handspan is a continuously variable characteristic influenced by multiple genes and environmental factors, producing a wide range of measurements. When plotted as a frequency distribution, continuous variation typically forms a bell-shaped (normal distribution) curve.
⚡ Start a Quiz on Variation: continuous and discontinuous variation, causes of variation
20 questions · 25 min · free

CXC CSEC Human and Social Biology: Variation: continuous and discontinuous variation, causes of variation FAQ

How many CXC CSEC Human and Social Biology questions on Variation: continuous and discontinuous variation, causes of variation are there on Kramizo?
Kramizo currently has 20 exam-board-aligned practice questions on Variation: continuous and discontinuous variation, causes of variation for CXC CSEC Human and Social 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 Human and Social 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 Variation: continuous and discontinuous variation, causes of variation practice with other Human and Social 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 Variation: continuous and discontinuous variation, causes of variation questions aligned to the official CXC CSEC Human and Social Biology syllabus?
Every question is written against the published CXC CSEC Human and Social 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 Variation: continuous and discontinuous variation, causes of variation typically tested on CXC CSEC Human and Social Biology papers?
Variation: continuous and discontinuous variation, causes of variation appears across multiple question types on real CXC CSEC Human and Social 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 Variation: continuous and discontinuous variation, causes of variation before exam day.

Start practising in 30 seconds — no card required.

⚡ Start Quiz Free →