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Bio Ecology 7.2.1
GCSE AQA Double Science Biology Unit 7 Ecology 7.2.1 Levels of Organisation
| Question | Answer |
|---|---|
| What do food chains represent? | Feeding relationships within a community |
| Describe a simple food chain. | 1. PRODUCERS 2. PRIMARY CONSUMERS 3. SECONDARY CONSUMERS 4. TERTIARY CONSUMERS |
| Explain the term PRODUCERS in a simple food chain. | synthesise mollecules, usually green plants / algae which make glucose by photosynthesis |
| Explain the term PRIMARY CONSUMERS in a simple food chain. | eat producers |
| Explain the term SECONDARY CONSUMERS in a simple food chain. | eat primary consumers |
| Explain the term TERTIARY CONSUMERS in a simple food chain. | eat secondary consumers |
| Explain the term PREDATOR. | consumers that kill and eat other animals |
| Explain the term PREY. | animal which is killed and eaten by a predator |
| Explain why numbers of predators and prey rise and fall in cycles in a stable community. | 1. Prey number rise, predators have more food, more breed and predator numbers rise. 2.More prey killed and eaten, prey numbers fall. 3. Predators have less food, predator numbers fall. 4. Less prey are killed, prey numbers rise. CYCLE REPEATS. |
Created by:
claurens