boimass definition
The dry mass of an organism.
Key Terms
boimass definition
The dry mass of an organism.
decompose definition
If a substance decomposes, it breaks down into simpler compounds or elements.
decomposer definition
An organism which eats dead organisms, fallen leaves, animal droppings, etc, and breaks them down into simpler materials.
ecosystem definition
The living organisms in a particular area, together with the non-living components of the environment.
endangered species definition
Animals that are close to extinction because of their low numbers.
faeces definition
Waste matter from the bowels.
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| Term | Definition |
|---|---|
boimass definition | The dry mass of an organism. |
decompose definition | If a substance decomposes, it breaks down into simpler compounds or elements. |
decomposer definition | An organism which eats dead organisms, fallen leaves, animal droppings, etc, and breaks them down into simpler materials. |
ecosystem definition | The living organisms in a particular area, together with the non-living components of the environment. |
endangered species definition | Animals that are close to extinction because of their low numbers. |
faeces definition | Waste matter from the bowels. |
food web definition | A network of food chains, showing how they all link together. |
primary consumer definition | The name given to an organism that eats a producer. A herbivore. |
producer definition | Plants that begin food chains by making energy from carbon dioxide and water. |
quadrat definition | A square frame of known area used for sampling the abundance and distribution of slow or non-moving organisms. |
secondary consumer definition | An organism that obtains its energy by eating the primary consumer. |
sampling definition | The selection of subjects included in a study. |
species definition | A type of organism that is the basic unit of classification. Individuals of different species are not able to interbreed successfully. |
transect definition | A line created, for instance, with a tape measure, along which sampling occurs. |
trophic level definition | The position of an organism in a food chain, food web or pyramid. |
zonation definition | Growing of plants in distinction regions. |
Ecosystem | An ecosystem is the interaction between a community of living organisms and their environment. A community is two or more populations of organisms. An ecosystem is the interaction of two or more populations of organisms in their environment. |
Producers and consumers feeding relationships | Feeding relationships show what organisms eat or are eaten by others and through this the levels of organisation in an ecosystem. These can be shown in food chains, which add together to make food webs for a habitat. |
Producers | At the base of almost every food chain is a producer. These are plants or algae, which photosynthesise. This means they convert energy from the sun into glucose during photosynthesis produces biomass. It is this which feeds the rest of the food chain. |
Levels of organisation | All animals above the producer are called consumers. The first is the primary consumer, the next is the secondary consumer. Animals that hunt and kill others are called predators, and those that are hunted and killed are called prey. The top animal in the feeding relationship is called the apex predator. |