Year 8 Science · Unit 1 · Lesson 1
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Learning Goals
Classify each example
Write the correct level of organisation (cell, tissue, organ, or organ system) next to each example. The first one is done for you.
| Example | Level of organisation |
|---|---|
| A single muscle cell | cell |
| The heart | |
| Muscle tissue | |
| The circulatory system (heart, blood vessels, blood) | |
| A leaf on a tomato plant | |
| Many similar muscle cells working together |
Real-world context
An AFL footballer rolls their ankle during a match in Melbourne. The doctor explains that they have damaged cells, torn tissue, and stressed the blood vessels that form part of the circulatory system that delivers blood and nutrients to help it heal.
(a) List all four levels of organisation mentioned in the passage (smallest to largest) and match each one to the body part mentioned.
(b) Why is it useful for a doctor to understand all four levels of organisation when treating an injury? Use the words interact and levels in your answer.
1. A student says: "The circulatory system and the heart are the same thing." Explain why this is incorrect, using the correct definitions of organ and organ system.
2. A tomato plant has roots, stems and leaves. Explain how these plant structures show that plants are also organised living systems. Use the words organised and interact in your answer.
Wrap Up
In one sentence, what was the main idea of this lesson?