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Y8 Ecolog Relation
Key words
| Term | Definition |
|---|---|
| producers | Organisms that produce their own food by photosynthesis |
| consumers | Organisms that eat producers or other consumers |
| herbivores | Organisms that only eat producers |
| predator | Organisms that hunt and kill prey |
| organisms | A living thing |
| species | Organisms that can reproduce to produce fertile offspring among themselves |
| ecology | The study of the environment |
| population | The total number within one species |
| adaptations | Design features that allow for survival in a particular environment |
| hypothesise | To use scientific theory to predict an outcome |
| decomposers | Organisms that break down dead organisms |
| secreting | To release chemicals |
| enzymes | A biological catalyst – makes a reaction occur faster but is not used in the reaction |
| absorbed | Taken into an organism |
| cytoplasm | Liquid part of a cell where reactions occur |
| nutrient cycle | How nutrients are reused in an environment |
| monocotyledons | Plants whose seeds contain one seed leaf |
| dicotyledons | Plants whose seeds contain two seed leaves |
| taxonomy | The classification into groups |
| germinate | When a seed sprouts |
| inferred | Using specific evidence to make general rules (induction – reverse is deduction) |
| phloem | Vessels carrying nutrients (glucose) |
| xylem | Vessels carrying water and minerals |
| epidermis | Outer layer of cells in the leaf |
| stomata | Pores that allow gas exchange in the leaf |
| succulents | Liquid storing |
| carbohydrate | Energy molecule containing CHO |
| photosynthesis | Carbon dioxide + water + light energy glucose + oxygen |
| ecosystem | A collection of habitats |
| trophic level | Each stage in a food chain |
| pyramid of numbers | A graph of the numbers of organisms in each trophic level |
| pyramid of energy | A graph of the energy contained in the organisms in each trophic level |
| insecticides | Chemicals that kill insects |
| toxic | Poisonous |
| concentrated | A large number of particles per volume |
| community | All the populations of organisms in an ecosystem |
| biome | A collection of ecosystems |
| biosphere | All the Earth’s biomes together |
| hierarchy | Order from highest to lowest |
| population dynamics | How population numbers change |
| simulate | Use a computer program to predict |
| population density | The number of organisms per area |
Created by:
andrewweng0406
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