Biodiversity And The Distrubution Of Organisms Flashcards
What do the arrows in a food web for food chain represent
The flow of energy between one organism to another
Loch Ness is an ecosystem. Which living organisms may live there?
Seaweed, algae, pondweed, invertebrates, frogs, newts, small fish, eels
What does a niche include
The use an organism makes of the resources in it’s ecosystem and it’s interactions with other organisms
What is one of the roles of a decomposer?
Convert protein and waste into ammonia and nitrates
A rabbit feeds on grass, it’s eaten by foxes and is a habitats for fleas. What does this statement describe of the rabbit?
The rabbit niche
When does competition occur?
When two or more organisms of the same or different species need the same resource
Give examples of what plants may compete for
Sun, water, space and nutrients from the soil
Give examples of what animals may compete for
Mainly for food, water, shelter and a mate
What are the two types of competition?
Inter-specific and Intra-specific
What can biodiversity be affected by?
Biotic (living close brackets) factors and abiotic (Non-living) factors
Give examples of abiotic factors
Windspeed Concentration of oxygen Light intensity Moisture Temperature PH
Give examples of biotic factors
Competition
Disease
Predication
Grazing
What did you use to measure abiotic factors
A light on moisture meter,A pH meter and A thermometer
What did you use if you were sampling organisms in an ecosystem in?
Quadrat
A pitfall trap
Pooters
Tree beating
How would you use a pitfall trap?
The top of the pot must be level with the surface of the ground. Then you would need to camouflage your trap so that organisms above can’t see.
