SvS Biology 2000 - Webby aw not, hewe I come...
1. The distribution, diversity and numbers of plants and animals found in ecosystems are determined by biotic and abiotic factors.
Biotic Factors |
Abiotic Factors |
| Plants Soil drainage Fungus Protista Wind speed Relationships between organisms |
Light Monera Commensalism Temperature range pH Aspect and inclination |
(a) Some Ignoramus stupidity (Binomial for someone in our class) obviously messed this table up. Identify (by circling) the traits that do NOT belong with the:
(i) Biotic factors
(ii) Abiotic factors
(b) Outline the method used to measure soil pH that you used on excursion, without using a soil probe.
(c) The following test was performed in an ecosystem, and Frost (who doesn't know what his problem is) forgot to write down what he was testing for. He copied the procedure correctly from Roweena though:
- What is this test to determine?
2. In a table compare or contrast (okay with you, Davey baby?) the abiotic characteristics of aquatic and terrestrial environments for the following features:
3. List 3 ways that you could determine the distribution of an animal in an environment.
4. Ecologists often use sampling techniques in order to make an estimate of a population.
(a) Why would a sampling technique be used
instead of just counting them?
(b) Name the type of population estimate technique that is best used for:
(i) Sedentary organisms such
as plants
(ii) Animals
(c) For each of the population estimation techniques you stated in
(b)(i) and (b)(ii), make a list of:
(i) Equipment required
(ii) Procedure
(iii) Problems that might be encountered
Now whaddya want?
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S. van Strien