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Life on earth - bio
Bio rev - for key areas 1,3 and 4
| Question | Answer |
|---|---|
| Describe the term species | Group of organisms that are similar enough to genetically produce offspring’s |
| What is biodiversity | A variety of living organism’s within a habitat |
| What is population | Number of species in a habitat |
| What’s a producer | An organism that uses the suns energy to produce food in photosynthesis |
| What’s a consumer | An organism that gets energy by eating other organisms |
| What’s a herbivores | Consumes plants only |
| What’s a carnivore | Consumes animals only |
| What’s a omnivore | Consumes both plants and animals |
| What’s a predator | Hunts and eats other animals |
| What’s prey | An animal that is hunted and eaten by other animals |
| What’s a food chain | A series of organisms that depend on each other for food |
| What’s a food web | Series of interlocking food chains |
| Describe the term ecosystem | All organisms living in a particular habitat and the non living components which organisms interact with |
| What’s a Community | All living organisms habitat |
| What’s a habitat | Where all the organism live |
| What is the term niche | The role organisms play in the community |
| What’s the pyramid of energy | The amount of the available energy in the organisms. At each level In the food chain |
| What’s the pyramids of numbers | Numbers of the organisms at each level in the food chain |
| What does the term allele mean | A variant of a gene |
| What’s the difference between community and population | A community has many different species in a habitat and population is many of one species |
| What do the arrows in a food chain represent | The direction of energy flown |
| What is competition | Rivalry between animals where they both need the same resources |
| What is INTERSPECIFIC competition | Occurs amongst animals of different species fighting for resources they maybe require |
| What’s is INTRASPECIFIC competition | Occurs amongst animals of the same species fighting for all resources they require |
| What’s is photosynthesis | A process carried out in the chloroplast of green plants, it’s an enzyme controlled process where green plants make sugar and oxygen using sunlight, water and carbon dioxide |
| What’s the word equation for photosynthesis | Carbon dioxide + water ➡️ sugar + oxygen |
| What are the two stages of photosynthesis | Light reactions and carbon fixations |
| What are the limiting factors of photosynthesis | Light intensity, carbon dioxide levels and temperatures |
| What temperatures do plant enzymes work best at | 20-25 degrees |
| What causes energy loss | Heat loss, undigestable food and movement |
Created by:
Maryamxnisar
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