Year 8 Science · Unit 1 · Lesson 15
Foundation Worksheet
Learning Goals
Match each disruption to its wider effect
Draw a line connecting each disruption on the left to its correct wider system effect on the right. Or write the matching letter next to each disruption.
| Disruption (starting component) | Your answer | Wider system effect |
|---|---|---|
| Plant roots are badly damaged | A. Less oxygen reaches body cells, affecting wider function | |
| Animal respiratory structures are compromised | B. Other parts of the living system receive less of what they need | |
| Any single component stops doing its role | C. Less water and mineral intake; stems and leaves are affected | |
| Transport between components is blocked | D. The whole plant may wilt because usual movement of materials is disrupted |
True or False? Fix the false ones
Circle T or F for each statement. If the statement is false, rewrite it correctly on the line below.
Living systems depend on interacting components, a problem in one part can affect wider function.
Correct it:
If a plant's roots are damaged, only the roots are affected, the rest of the plant keeps working normally.
Correct it:
System effects only happen in animals, plants do not show system disruption.
Correct it:
A strong explanation of system disruption shows the cause-and-effect chain, not just the damaged part.
Correct it:
1. What is meant by a "system effect"? Give one example from this lesson.
2. A farmer accidentally cuts through the roots of a fruit tree. Several days later, the leaves begin to wilt. Write a four-step cause-and-effect chain to explain why.
Wrap Up
In one sentence, what was the main idea of this lesson?