Unit 3.1- Interdependence

interdependence

all living things depending on at least one other

what happens if the population of one organism in an ecosystem rises or falls

the rest of the ecosystem is affected

biodiversity

the range of species that exists within an ecosystem

species

organisms that can reproduce to produce fertile offspring

habitat

the place where an organism lives

population

is a group of organisms of the same species

community

all the organisms living in an ecosystem

ecosystem

is a biological unit made up of living and non living parts

the importance of plants

habitats and shelter for other organisms, food for animals by photosynthesis, taking co2 out the atmosphere and putting oxygen back in

the importance of animals

maintain biodiversity, prey animals provide food for predators and they act as pollinators and disperse seeds

niche

the rolfe the organism plays within a community

what can a niche include

the use the organism makes of resources in the ecosystem and the organisms interactions with other organisms

distribution of organisms

where the organism can be found and is affected by abiotic and biotic factors

biotic factor

a living factor that affects where an organism can live

biotic factor example

availability of food, space, predators, disease

abiotic factor

a non living source that can affect where an organism lives

abiotic factor example

temperature- thermometer, light- light meter, moisture/humidity- moisture meter, acidity in soil- pH meter

where the energy in an ecosystem comes from

the sun

producers

organisms that can photosynthesise to make their own food

consumers

all other organisms that rely on producers either directly or indirectly. don’t make their own food

primary consumer

directly, eats producers

secondary consumer

indirectly, eat primary consumers

food chain

the feeding relationship of the transferral of energy in the form or chemical energy

what do the arrows in a food chain represent

energy transfer

how much energy is passed on to the next food chain level

10%

predator

animal that eats other animals

prey

animal that is eaten by others

herbivore

only eats plants

omnivores

eats both plants and animals

carnivore

eats only animals