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A2.2.8—Differences in eukaryotic cells

Plant, fungal, and animal cells share eukaryotic organization but differ in walls, plastids, vacuoles, storage products, and structures associated with movement or division.

Syllabus
First assessment 2025
Objective
A2.2.8
Level
HL

Exam analysis

Chance of appearing3%of analysed past papers
Latest appearanceMay 2025
Most common paperPaper2
Typical marks1–3

Common command terms

  • Identify
  • State
  • Explain
  • Distinguish

Scoring notes

Common mistake
Claiming that every plant cell contains chloroplasts.

Recent exam appearances

May 2025Paper2 ["HL"] · TZ28(a)[ 3 ]A2.2.8—Differences in eukaryotic cells
November 2020Paper1 ["HL"] · TZ01[ 1 ]A2.2.8—Differences in eukaryotic cells
November 2015Paper2 ["HL"] · TZ02(a)(iii)[ 2 ]A2.2.8—Differences in eukaryotic cells
Practice this objective

Coverage 2015–2025 · Updated 15 Jul 2026

Plant, Animal and Fungal Cells Share a Core but Differ

Plant, animal and fungal cells are eukaryotic but differ in walls, storage materials, organelles and typical shape.

Plants commonly have cellulose cell walls, chloroplasts and large vacuoles; fungi have chitin walls and often grow as hyphae; animals lack a cell wall and rely on extracellular matrices and flexible membranes.

Use combinations, not one feature:

  • cellulose wall + chloroplast suggests plant
  • chitin wall + hypha suggests fungus
  • no wall + flexible outline suggests animal

A chloroplast and cellulose wall together support a plant-cell identification more strongly than a single visible vacuole.

No single feature is infallible: specialized cells can lack a typical organelle or have unusual shapes.

Differences in eukaryotic cells

Assessment in practice

1–2 marks
How it is assessed

This objective is assessed through structured response, commonly using Identify / State / Explain.

Command terms

Identify / State / Explain / Distinguish

What earns marks

Build the answer around this relationship: Plant cell walls contain cellulose and support a regular cell outline.

Watch for

Claiming that every plant cell contains chloroplasts.

Representative question

Question 1

[Maximum number: 3]

Distinguish between structures in animal and plant cells.

SL Retrieval: Read, Identify, Draw

The SL core is a practical chain. First, understand cells as structural and functional units. Then use microscopes correctly: prepare, stain, calibrate, measure, and choose a method based on resolution and the detail needed. Finally, identify cell types from visible evidence and draw only what the micrograph shows. This is how the topic turns from definitions into exam performance.

  • Cell theory: cells are structural and functional units.
  • Microscopy: resolution, calibration, magnification, actual size, and scale bars.
  • Cell identity: universal parts, prokaryote/eukaryote differences, and plant/animal/fungal evidence.
  • Micrograph work: justify from visible structures, scale, and context.
  • Drawing: clear lines, no shading, visible labels only, scale/magnification included.

Concept essentials

  • Plant cell walls contain cellulose and support a regular cell outline.
  • Photosynthetic plant cells contain chloroplasts.
  • Fungal cells have walls but lack chloroplasts.
  • Animal cells lack a cell wall and may contain centrioles or motile appendages.
ConceptIB Biology HL