807237
Description
Mind Map by seth.bragg, updated more than 1 year ago
|
Created by seth.bragg
almost 11 years ago
|
|
Distribution of Organisms
- Physical
Factors
- The physical factors that may affect
organisms include:
- Temperature
- Amount of light
- Availability
of water
- Availability
of nutrients
- Availability of oxygen and
carbon dioxide
- For example, a plant needs light for
photosynthesis so the plant will be
found in a place with plenty of light
available rather than dark places
- Temperature
- The physical factors that may affect
organisms include:
- Ecosystems
- An environment is all the
conditions that surround a
living organism
- A Habitat is the place
where an organism lives
- A population is all the members
of a single species that live in a
habitat
- A community is all the
populations of different
organisms that live in a habitat
- An ecosystem is a
community and the
habitat in which it lives
- An environment is all the
conditions that surround a
living organism
- Collecting
Quantitative Data
- If you wanted to calculate the
population of an organism in
its habitat it would be
laborious if not impossible to
count every single organism
- Instead the population could
be sampled with a transect or
a quadrat
- A transect is a line across a habitat or
part of a habitat formed by a piece of
string or rope; the number if each
species can be observed and
recorded at regular intervals along
the transect
- A quadrat is usually a square
made of wire, possibly with
smaller areas within the quadrat
- The organisms underneath,
generally plants, can be
identified and counted
- The quadrat should be
placed randomly so that
a representative sample
is taken
- The validity and
reproducibilty of the
results increases as the
results from more
quadrats are analysed
- The validity and
reproducibilty of the
results increases as the
results from more
quadrats are analysed
- The quadrat should be
placed randomly so that
a representative sample
is taken
- The organisms underneath,
generally plants, can be
identified and counted
- A transect is a line across a habitat or
part of a habitat formed by a piece of
string or rope; the number if each
species can be observed and
recorded at regular intervals along
the transect
- Instead the population could
be sampled with a transect or
a quadrat
- If you wanted to calculate the
population of an organism in
its habitat it would be
laborious if not impossible to
count every single organism
Want to create your own Mind Maps for free with GoConqr? Learn more.