The table below shows some of the levels of organisation within organisms.
Complete the table by inserting a tick (✓\checkmark✓) to show the level of organisation of each example. The first one has been done for you.
| Example | Organelle | Cell | Organ |
|---|---|---|---|
| mitochondrion | ✓\checkmark✓ | ||
| motor neurone | |||
| ribosome | |||
| stomach | |||
| root |
Place the following structures in order of size from the smallest to the largest:
heartsperm celllungegg cellovary \text{heart} \qquad \text{sperm cell} \qquad \text{lung} \qquad \text{egg cell} \qquad \text{ovary} heartsperm celllungegg cellovary| Order | Structure |
|---|---|
| smallest | 1. ____________________ |
| 2. ____________________ | |
| 3. ____________________ | |
| 4. ____________________ | |
| largest | 5. ____________________ |
3 exam-style questions on Edexcel IGCSE Biology Level of organisation. Each one has a worked solution and a mark scheme showing where the marks go.