Term
|
Definition
| A distinct, self-supporting system of organisms interacting with each other and with a physical environment. |
|
|
Term
|
Definition
| The place where a specific organism lives |
|
|
Term
|
Definition
| All the organisms of a particular species found in an ecosystem at any one time. |
|
|
Term
|
Definition
| The populations of all species found in a particular ecosystem at any one time. |
|
|
Term
|
Definition
| Plants which photosynthesise to produce food |
|
|
Term
|
Definition
| An animal which eats a producer and is a herbivore |
|
|
Term
|
Definition
| An animal which eats the primary consumer and is a carnivore. |
|
|
Term
|
Definition
| An animal which does not get eaten by anything else - the predator |
|
|
Term
|
Definition
| The different stages in a food chain |
|
|
Term
|
Definition
The simplest way of showing feeding relationships
e.g. grass -> grasshopper -> lizard |
|
|
Term
|
Definition
| A diagram which shows how the different food chains in an ecosystem relate to each other. |
|
|
Term
|
Definition
| A sampling square made from metal, wood or plastic which is used to count a small representative part of the population (usually plants) |
|
|
Term
|
Definition
| Represent the numbers of organisms in each trophic level in a food chain, irrespective of their mass. Not always pyramid shaped. |
|
|
Term
|
Definition
| Show the total mass of the organisms in each trophic level, irrespective of their numbers. Always pyramid shaped. |
|
|
Term
|
Definition
|
|
Term
|
Definition
| Oxidise the ammonia in the soil first to nitrite and then to nitrate (nitrification). |
|
|
Term
|
Definition
| Use nitrates as an energy source and convert them into nitrogen gas. |
|
|
Term
| Nitrogen-fixing bacteria in soil/root nodules of legumes |
|
Definition
| Convert nitrogen gas into ammonia. This is used by the bacteria/plants to make amino acids and proteins. When the bacteria/plants die, their proteins decompose, releasing ammonia back into the soil. |
|
|
Term
|
Definition
| Loss of water by the leaves. Causes water to be 'pulled' up the xylem in the stem and roots in a continuous flow. |
|
|
Term
|
Definition
| Water which falls from the sky in any form. Clouds are formed from the water vapour released in transpiration. |
|
|
Term
|
Definition
| All the regions of earth where life can exist |
|
|
