Compare the structures of plant and animal cells
Compare shared structures with plant features without assuming every plant cell has chloroplasts.
Mapped to the named 0654 section using teaching from the corresponding single-science course. A 0654-specific review of every Core and Supplement objective is still in progress. Written practice is self-checked; it does not demonstrate supervised laboratory competence or award an official Cambridge grade.
Before you begin
- Recall the distinction between plant, animal and bacterial cells. Read the supplied evidence before drawing a conclusion.
Work on paper. Try each question before revealing help, and explain why your method works.
Quick readiness check
Which boundary occurs in both typical plant and animal cells?
What you will learn
- Identify eight named cell structures.
- Use cell features to justify a comparison.
Start with shared structures
A typical plant cell and a typical animal cell have a cell membrane, cytoplasm, a nucleus, ribosomes and mitochondria. The membrane surrounds the contents, cytoplasm occupies the interior around structures, and the nucleus contains genetic information. Diagram colours are a teaching convention, not the natural colours of organelles.
A typical photosynthetic plant cell also has a cellulose cell wall outside its membrane, chloroplasts and a large permanent vacuole containing cell sap. Animal cells do not have cellulose walls or chloroplasts; they do not normally have the large central permanent vacuole shown in the plant model.
Use more than an outline
A rectangle is not proof of a plant cell and a rounded outline is not proof of an animal cell. Identify the named structures and use the specimen context. A root hair cell is a plant cell but usually lacks chloroplasts because it is not exposed to light for photosynthesis.
Specialised cells may depart from the typical model. Mature mammalian red blood cells lack a nucleus and mitochondria. The comparison diagram describes typical cells; it is not an exception-free list for every cell in an organism.
Sources for this lesson
Pause and explain
Why can a root cell lack chloroplasts and still be a plant cell?
Worked example
A supplied cell has a cellulose wall, membrane, nucleus and large permanent vacuole, but no chloroplasts. Can it be a plant cell?
Show the worked solution
- The cellulose wall is a plant feature.
- A large permanent vacuole supports that interpretation.
- Lack of chloroplasts is compatible with a non-photosynthetic plant cell.
Answer Yes; these observations fit a non-photosynthetic plant cell.
Try a topic test
Choose Easy, Normal or Difficult. Save your answers and open worked review after finishing.
Test this topic →From guided practice to a new situation
Write your answer and reasoning first. Use a hint only if you are stuck. The model solution is for self-checking; your written work is not automatically marked.
List three shared structures in typical plant and animal cells.
Give me a hint
Start with the membrane and interior.
Compare my reasoning
- Both have a membrane and cytoplasm.
- Both normally have a nucleus, ribosomes and mitochondria.
Any three of membrane, cytoplasm, nucleus, ribosomes and mitochondria.
Look for these in your work
- Give three structures.
- Do not include a chloroplast as shared.
A photosynthetic leaf cell has structures absent from a typical cheek cell. Name three.
Give me a hint
Compare the plant additions.
Compare my reasoning
- Find the wall outside the membrane.
- Find chloroplasts and the large permanent vacuole.
Cellulose cell wall, chloroplasts and large permanent vacuole.
Look for these in your work
- Distinguish wall from membrane.
- Give all three.
A student says every green oval in any cell diagram is a chloroplast. Explain why the label requires more evidence.
Give me a hint
Colours are chosen by the illustrator.
Compare my reasoning
- Diagram colour is conventional.
- Read structural labels or a supplied key and the cell context.
- Compare the structures, not colour alone.
Use the key, structure and cell context; green colouring alone is insufficient.
Look for these in your work
- Reject colour-only inference.
- Specify better evidence.
Common mistakes
- Do not classify by shape alone.
- Not every plant cell has chloroplasts.
What can you explain now?
Name two structures shared by typical plant and animal cells.
Compare with the explanation
Cell membrane and nucleus; cytoplasm, ribosomes and mitochondria are also acceptable.
Shared structures do not by themselves separate the two cell types.
After trying it yourself, choose your next review. This is your self-assessment.
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Make it stick
Draw two typical cells and label both shared structures and plant additions.
If you needed the solution, close it and solve the problem again from a blank page. A correct answer is stronger when you can explain the reason for each step.