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Y8 Ecolog Relation

Key words

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