Save
...
Paper 2
(7) Ecology
competition, adaptations and food chains
Save
Share
Learn
Content
Leaderboard
Learn
Created by
gracey poo
Visit profile
Cards (24)
organisms compete with other
species for the
same resources
In each community, species depend on each other for things like food, shelter, pollination and seed dispersal. What is this called?
Interdependence
Interdependence
means that
one change can effect the whole system.
A change in an environment could be an
increase
or
decrease
in an
abiotic
or
biotic
factor.
Changes in aboitic and biotic factors can effect
size
of
populations
in a
community.
adaptations
allow organisms to
survive
The features or characteristics of an organism that allow them to survive in their environment are called what?
Adaptations
Name the 3 types of adaptations.
Structural
behavioural
functional
Give 3 examples of structural adaptations
fur colour
fat layers
large surface area to volume ratio
Give an example of a behavioural adaptation.
Migration
Give 2 examples of functional adaptations
conserving water
hibernating
(
lowering metabolism
)
Some microorganisms are
extremophiles
What is an extremophile?
An organism adapted to live in very extreme conditions
Give examples of extreme conditions
high temperatures
high salt concentration
high pressures
Food chains
show
what is eaten by what
in an ecosystem
Food chains always start with a what?
producer
Producers make their own food (glucose) using what?
energy
from
the
sun
(
photosynthesis
)
What are producers typically?
algae or green plants
What is biomass?
mass of living material
. can be thought of as energy stored in a plant
energy
is
transferred
through
living organisms
when
organisms
eat other
organisms
populations of
prey
and
predators
go in
cycles
consumers that hurt and kill other animals are called
predators
If the population of prey
increases
, so does the
predatorss
As population of predators
increases
, population of prey
decreases