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B7 ECOLOGY
FOOD CHAINS
| Question | Answer |
|---|---|
| What do food chains show? | Food chains show what's eaten by what in an ecosystem. |
| What do food chains start with? | Food chains always start with a producer. |
| What are producers usually and what do they make? | Producers are usually green plants or algae - they make glucose by photosynthesis. |
| What happens to some of the glucose that a green plant makes? | When a green plant produces glucose, some of it is used to make other biological molecules in the plant. |
| What is biomass? | These biological molecules are the plant's biomass- the mass of living material. Biomass can be thought of as energy stored in a plant. |
| How is energy transferred in an ecosystem? | Energy is transferred through living organisms in an ecosystem when organisms eat other organisms. |
| Who are producers eated by? | Producers are eaten by primary consumers. |
| Populations of prey and predators go in what? | Populations of prey and predators go in cycles. |
| What are predators? | Consumers that hunt and kill other animals are called predators, |
| What is the population of any species usually limited by? | The population of any species is usually limited by the amount of food available. |
| What happens to the population of predators if the population of prey increases? | If the population of the prey increases, then so will the population of the predators. |
| What happens to the population of prey if the population of predators increases? | However as the population of predators increases, the number of prey will decrease. |
| Predator-prey cycles are always out of what with each other? | Predator-prey cycles are always out of phase with each other. This is because it takes a while for one population to respond to changes in the other population. |
| If the number of rabbits does up, what would happen immediately to the number of foxes? | When the number of rabbits goes up, the number of foxes doesn't increase immediately because it takes time for them to reproduce. |
| What do producers produce? | Producers make (produce) their own food using energy from the Sun. |
| Who eats primary consumers? | Primary consumers are then eaten by secondary consumers. |
| Who eats secondary consumers? | Secondary consumers. are eaten by tertiary consumers. |
Created by:
HJB1972
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