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Bella Nat 5
U3 KA 1 & KA 4 Ecosystems & Energy
Question | Answer |
---|---|
What does an arrow show in a food web or chain? | The direction of ENERGY FLOW. |
What is a producer. | A GREEN plant that can make its own food by photosynthesis. |
What is a consumer? | An organism that gets its energy by eating another organism. |
State two ways energy is lost from a food chain. | Any 2 from |
What is a herbivore? | An organism that only eats plants |
What is a species? | Organisms that can reproduce and produce fertile off-spring |
What is a Carnivore? | An organism that only eats animals. |
What happens to the Energy in a food chain as you go along the food chain? | It gets smaller |
Which ecological Pyramid ALWAYS takes the shape of a pyramid? | Energy |
What is meant by a pyramid of Numbers? | A diagram that represent the Number of organisms at each successive level of a food chain. |
What is meant by a pyramid of Energy? | A diagram that represent the Energy of organisms at each successive level of a food chain. |
What percentage of energy is passed on at each stage in a food chain? | 10% |
What happens to the energy that is passed on in a food chain? | It is turned into body tissue |
How much energy is LOST at each stage in a food chain? | 90% |
Give an example of a food chain where the Numbers do NOT decrease in size | Tree |
Why do plants need nitrates? | To make amino acids which are used to make protein |
What is Inter-specific Competition? | Competition between Different Species |
What type of competition is the most intense? | Intra-specific |
What is Intra-specific Competition? | Competition WITHIN the species |