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DHS Eco Unit
DHS Eco Unit terms and definitions
| Definition | Word/ phrase |
|---|---|
| The place where an organism lives | Habitat |
| All the organisms (plant, animals and micro-organisms) found in an ecosystem. | Community |
| The community + habitat OR All the living and non-living components found in a particular environment | Ecosystem |
| The term used to describe any organism that can make its own food using light energy, by photosynthesis. | Producer |
| The term used to describe any organism that gets its energy from eating other organisms. | Consumer |
| The term used to describe any animal that gets its energy by eating only plants. | Herbivore |
| The term used to describe any animal that gets its energy by eating both plants and other animals. | Omnivore |
| The term used to describe any animal that gets its energy by eating other animals. | Carnivore |
| The types of organisms that are Decomposers. | Bacteria and Fungi |
| The term used to describe a non-living factor which may effect the distribution organisms. | Abiotic factor |
| The term used to describe a living factor which may effect the distribution organisms. | Biotic factor |
| Occurs when 2 or more organisms require the same limited resource. | Competition |
| A diagram that show the movement of energy between a number of different types of organisms. | Food chain |
| The term used to describe a number of food chains linked together. | Food web |
| The term used to describe an organism that is hunted for food. | Prey |
| The term used to describe an organism that hunts other organisms for food. | Predator |
| A diagram which shows the number of organisms at each level of a food chain. | Pyramid of numbers |
| The term used to describe an organism that shows the presence or absence of an abiotic factor in an ecosystem. | Indicator species |
| The term used to describe a chemical used to control unwanted plants or animals. | Pesticide |
| The term used to describe the number of different species, genes and ecosystems present in a region. | Biodiversity |
| The term used to describe the role that an organism plays within a community. | Niche |
| Percentage of the energy lost at each level of a food chain. | 90% |
| Percentage of the energy passed to the next organism at each level of a food chain. | 10% |
| 3 ways in which energy can be lost from the food chain | Heat Movement Undigested food |
| In a food chain ...... show the direction of the movement of energy from one organism to the next. | Arrows |
| Plants take in this type of compound to make proteins. | Nitrates |
| This type of bacteria have the ability to take nitrogen from the air and convert it into nitrate compounds. | Nitrogen-fixing bacteria |
| The term used to describe the type of competition which occurs between individuals of different species. | Interspecific |
| The term used to describe the type of competition which occurs between individuals of the same species. | Intraspecific |
| The term used to describe the type of competition which is more intense. | Intraspecific |
| This piece of equipment used to sample an ecosystem is a square of known area divided up into smaller squares. | Quadrat |
| The term used to describe a group of organisms of the same species living in an ecosystem. | Population |
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dhsbiology
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