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Definition
| All biotic organisms and abiotic things in an area. |
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Definition
| A group of similar plants/animals smaller than a genus. (uncapitalized) Ex: "sapien" in Homo Sapien. |
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Definition
| A group of organisms of the same species living in the same area at the same time. |
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Definition
| An organism which gets food by eating other organisms. (can be on any trophic level except 1st) |
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Definition
| Small animals or microorganisms which subsist on decaying matter (Ex: fallen leaves, dead bodies) Ex: earthworms, mites |
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Definition
| When nothing has grown in an area for a while and then vegetation starts to grow. (A volcano erupts and the lava forms new land. Plants begin to grow.) |
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Definition
| When an area formerly had vegetation, but this was destroyed and then new vegetation begins to grow. (Forest fire) |
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| A community characterized by specific species of plants/animals and climate. (tundra, desert) |
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Definition
| To leave an area. (causes the population of that area to decrease) |
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Definition
| To move to an area. (causes the population of that area to increase) |
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Term
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Definition
| Interaction between two different organisms in close physical association. |
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Term
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Definition
| Keep track of energy flow in an ecosystem. |
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Definition
| The maximum quantity of organisms an ecosystem can support. |
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Term
| What's the difference between a food web and a food chain? |
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Definition
| Food chains follow a single path while food webs follow many. |
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Term
| When we keep of the biomass in a trophic level, what are we keeping track of? |
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Definition
| We are keeping track of the amount of carbon compound. |
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Term
| Approx. 10% of the energy stored in an organism (as biomass) is passed on to the next trophic level. What happens to the rest of the energy in the biomass? |
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Definition
| It's used when the organism which consumed the previous organism breaths and digests. Some of it is turned into waste or recycled. |
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Term
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Definition
| the biosphere and is recycled. |
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Term
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Definition
| Plants of the forest take the carbon in CO2 and fix it in organic compounds (glucose/starch/carbohydrates). |
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Term
| How is nitrogen taken from a gas to a useable compound? |
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Definition
| A bacteria takes nitrogen from the atmosphere to useable through the process of dentrification and a different bacteria turns it from useable to a gas. |
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Term
| What is the competitive exclusion principle? |
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Definition
| No two species can occupy the same niche at the same time. |
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Term
| An organisms density is defined as? |
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Definition
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Term
| What is the difference in a population if organisms immigrate or emigrate? |
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Definition
| If organisms emigrate then the population decreases. If organisms immigrate then the population increases. |
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Term
| If a population decreases what is going on? |
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Definition
| If a population decreases then the species may have been overhunted, the climate could've changed for worse, some organisms may have emigrated, a natural disaster could've occurred, or the number of predators could've increased. |
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Term
| Differences between density dependent/independent limiting factors? |
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Definition
| Density dependent limiting factors depend on the number of organisms in the population, while density independent limiting factors don't. |
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Term
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Definition
| The weight of an organism if all of its water is gone. (usually equivalent to carbon mass) |
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Term
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Definition
| (1st Trophic Level) The food source of consumers. It creates complex organic compounds through photosynthesis. |
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Term
| How is a trophic level different from a food pyramid? |
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Definition
| Trophic levels keep track of energy flow while food pyramids keep track of energy flow and matter. |
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Term
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Definition
| Compounds such as sugars, starches, and grains. The main energy source of the body. |
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Definition
| The simplest sugar - a sugar building block. Ex: glucose, fructose, galactose. |
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Definition
| A chain of monosaccharides (sugars) bonded together. A carbohydrate. |
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Term
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Definition
| Any kind of fatty acid such as fat, oil, or butter. Necessary to maintain cell membranes, create certain hormones, and is a large energy source. |
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Term
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Definition
| A remodeled compound of cholesterol. |
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