Life On Earth Unit 3 Biodiversity Flashcards
What is a Biome
A various region of the planet that have a distinct climate, with distinct plants and animals.
Name 3 land biomes
Forests
Grasslands
Tundra
Name 3 water biomes
Oceans
Freshwater lochs
Salt water seas
What is an Ecosystem
A natural biological unit where organisms interact with their environment.
What is a habitat
A place where an organism lives
Give 3 examples of habitat
Pond
Rock pool
Soil
What does the term community mean
It is the name given to all the different organisms living in a habitat.
What is a population
It is the total number of organisms of the same species that live in a particular habitat.
Biodiversity
The variety and relative abundance of species present in an ecosystem
What’s a biotic factor? Name 2
Living organism:
Disease
Food and space
What is an abiotic factor? Name 2
Non living or physical factor that affect organisms:
Light
Moisture
What is a producer
A green plant that produces it’s own food. It is the source of a food chain
what is a consumer
Animals that cannot produce their own food and eat other things instead
Definition or herbivore carnivore and omnivore
.eat only plants
. Eat only animals
. Eat both animals & plants
What percentage of energy is lost through the process of food chain and how much is passed on
90% is lost
10% is passed on
What is a food web
All the organisms of one species in an ecosystem
What’s a decomposer
Obtain energy by breaking down undigested waste, uneaten remains and dead bodies
What is a pyramid of biomass
Diagram that shows the total mass of organisms at each level of a food chain
What’s a quadrat
A piece of apparatus samples plants and slow moving animals such as limpets
How do u make sure ur experiment is reliable
Repeat it (many samples taken)
What’s a pitfall trap
Apparatus samples soil invertebrates such as beetles and woodlice
What’s the two mains ways energy is lost in a food chain
Heat and movement
An animal that hints and kills others for food
Predator
An animal that is hinted and killed by another for food
Prey
