Variables
Define the term independent variable
maniplulate or changed variable in an experiment
what is a biome
a very large ecological area on the earth's surface
What is an adaptation?
any genetically controlled characteristic that aids survival of an organism to reproduce
what was the IV variable and DV for speedy vertebrates?
IV: shape of plasticine
DV: time taken to get to the bottom
is energy recycled in an ecosystem
No- the energy comes from the sun
in the blubber glove experiment, name 2 controlled varibales
water same temp 0 degrees C
hand submergered to same depth (to wrist)
Name 2 biomes
desert
aquatic
forest
grassland
tundra
name some adaptations of fish with examples
piper fish- long body- camourflage
anglefish- false eye pattern - scare predators
globe fish - scales form protection
how can you increase the reliability of the experiment
how can you incease validity
repeat trials
control variables in the experiment
List 3 marine predators
whale
shark
seal
What is needed in a hypothesis
Not a question- but a statement
both variables -IV and DV
a prediction/causal relationship
Not using "I think"
Name 5 of the 7 life functions/processes
Movement
growth
cells/control
reproduce
excrete
nutrition
Name the 3 types of adaptation
structural
behavioural
physiological
name 3 controlled variables for the experiment
same size of plasticine ball- 4 g
same abount of lead shots- 5 in each
same level of water 1 cm below surface of cylinder
what is a marine producer
phytoplankton
seagrasses
what needs to be in a conclusion?
statement of results- referring to data and describing the trends
state whether the data supports the hypothesis
issues/difficulties- identify clearly
Improvements- what to improve next time
What is ecology
the study of the relationship of living things
what is a behavioural adaptation
relates to the actions of an organism that help it to survive
what type of graph should be used for the different shapes and their speed it moved through the water?
Column graph as it is discrete data for IV
What is an ecological pyramid?
information about numbers of organisms at each trophic level and other aspects, can be shown for an ecosystem though an ecological pyramid
What needs to be in a table and graph
Labels
Units
sclae
Title
PLotting
headings
repeat trials
what is a habitiat and what is a niche
Habitat -living space of living things
Niche- species requirements, physical conditions, and resources in its environment and its adaptations.
what is a physiological adaptation
features of an organisms bodily functions which enhance its chances of survival
what axis- X or Y - should the shape of the plasticine, be on
X - the IV goes on the X
the dependent variables goes on the y
what is biomass?
the total amount of matter present in organisms at each tropic level at a given time