Chapter 2. Commensalism Host Mutualism Parasites Parasitism Symbiosis Predator Prey Predator...
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Transcript of Chapter 2. Commensalism Host Mutualism Parasites Parasitism Symbiosis Predator Prey Predator...
Unit 1Chapter 2
Commensalism Host Mutualism Parasites Parasitism Symbiosis Predator Prey
Terms Review
Predator and Prey
Activity 2-1A Review (p.38)
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Approximate number of Hares and Lynxes Trapped per year.
Hares TrappedLynxes Trapped
Year
Num
ber
of
Anim
als
Tra
pped
1. Describe the pattern shown by the population of hares.2. Describe the pattern shown by the population of lynxes.2. Explain why changes in the lynx population appear to follow changes in the hare populations.
3. How can a predator species control the population size of its prey?4. How can a prey species control the population size of its predator?5. What might happen to the number of lynxes if the plants in the ecosystem became rare?6. Predict the probable size of each population in 1945.7. Do you think that using the numbers of trapped animals is an accurate
method of estimating population size?
8. The northern habitat where these data were collected has relatively few different species. In other ecosystems, such as a forest, the populations of different species do not usually fluctuate so much. Suggest a reason for this
Carnivore Consumers Decomposers Fermentation Herbivores Omnivores Producers Scavengers
More terms
Video
Decomposers V.S Scavengers
Read p.50 - 51 Write your own notes on what a food chain
is and the roles organisms have in the food chain.
Read p.54 – 55 Write your own notes about Food Webs and
Energy Transfer Read p.55 – 56 Write your own notes about Energy
Pyramids
Food Chains, Food Webs and the Transfer of Energy
Food Chain
Marine Food Chain
Food Web
Marine Food Web
Read and complete activity 2-3B on page 57 you can answer the questions in your notebook.
When done answer question 7 on page 59.
Activity 2-3B
Terms◦ Nutrients◦ Nutrient Cycles
Read p. 60 – 62 Update your word list
Cycles of Matter in Ecosystems
Nutrients, such as nitrogen and carbon, are recycled in the environment.
All organisms are eventually recycled and their nutrients are returned to the soil by the action of decomposers.
Nutrient Cycles
P.64 questions 1, 3, 5, 8 and 13.
Review