Ecology and Human Influences Flashcards
What is a bionic factor
Living components that affect the ecosystem and organisms within it
What are abiotic factors
Non-living physical conditions that influence or affect the ecosystem and the organisms within it
What is a habitat
The place where specific organisms live. An ecosystem is made up of lots of habitats
What is a community
A combination of all populations of different species interacting with one and another within the ecosystem
What is the population
All organisms belonging to one/the same species living in an ecosystem
How do you know where to place your quadrat
Get a table of random numbers to generate co-ordinates
Place quadrat on ground, if plant takes up……then mark it as…..
Over 50%
Present
How do you work out the percentage cover of plants in the 10m x 10m area
No. squares plant was present in
————————————————- (x100)
Total number of squares
What is a transect
A 10m line to investigate how the number of organisms change over the habitat
Give a method of using a transect
Measure 12m from the top of the hill to the bottom using tape measure
At every meter, place the quadrat against the length of tape, always on the left.
See the percentage cover of each little square in the 1m²
Do this every meter and record the average percentage cover on the table afterwards.
What is an autotroph
Makes own food (plant)
What is a heterotroph
Gets nutrition from eating other animals
What are decomposers
Organisms, namely bacteria and fungi, that break down dead or decaying matter.
In a food web, the arrow represents the……of……..
Transfer of energy
What shape will pyramids of Biomass always be
Pyramids!