🌿 Individual Worksheet
Biology · Grade 8 Interrelation between living things
Student: Date:
📌 Instructions: Read each task carefully. You will describe interaction types (predation, competition, mutualism, parasitism, commensalism) and explain how organisms adapt to environmental changes. Write your answers in the spaces provided. Total score: 10 points.
1 Define the term 1 pt
What is predation? Give one example from nature.
2 Compare 1 pt
Explain the difference between competition and mutualism. Write one sentence for each.
3 Classify 1 pt
Fill in the table: write each interaction type in the correct column: predation, mutualism, commensalism, competition, parasitism.
| Oppositional (+/–, –/–) | Symbiotic (at least one benefits) |
|---|---|
Hint: think about +/- or -/- interactions.
4 Match 1 pt
Match the term with its description. Draw a line or write the letter.
1. Parasitism 2. Commensalism 3. Mutualism
A) One benefits, the other is unaffected B) Both benefit C) One benefits, the other is harmed
5 Short answer 1 pt
How does competition affect the population of two species that share the same food source? Explain briefly.
6 Adaptation 1.5 pt
Describe two ways that prey animals (e.g., rabbits or deer) adapt to avoid predators. How does this relate to predation?
7 Diagram 1 pt