Week 7: Ecosystems: Energy Transfer & Population Dynamics

12/19/2011

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The ultimate source of energy for all ecosystems is the Sun. Only producers can convert solar energy into food energy. Therefore, all other organisms depend on producers for their energy needs.

Food Chains vs. Food Webs

Assignment.....

  1. Your first paragraph should include the definition of a food chain and an example of a food chain with at least 5 organisms.  Make sure you name the organism and explain who eats who in the chain. (7.5 Points)
  2. Your second paragraph should include the definition of a food web with at least 5 organisms.  Make sure you name the organisms and explain who eats who in the food web.  (7.5 Points)
  3. This post should be two paragraphs and should take you no longer than 30 minutes.
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Organism Interaction

12/12/2011

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Examine the types of relationships between organisms discussed in Study Island this week.  Symbiosis or Symbiotic Relationships are described as, "an interaction between individuals of different biological species. At least one of the organisms receives a benefit from the interaction."  After examining the chart below and watching the video provided please complete the following:

Please research to complete the following...Answers should be posted to this blog!

1. An example of a Commensalism Symbiotic Relationship found in nature...List the two species and include the benefit received by one species. (5 points)

2. An example of a Mutualism Symbiotic Relationship found in nature...List the two species and include the benefit received by both species. (5 points)

3. An example of a Paraistism Symbiotic Relationship found in nature...List the two species and include the benefit received by one species and the negative effect received by the other species. (5 points)
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Standard OH Grade 6-8, Science Standard Life Sciences C Explain how energy entering the ecosystems as sunlight supports the life of organisms through photosynthesis and the transfer of energy through the interactions of organisms and the environment.

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Grading Period 2 Week 5: Diversity of Life

12/5/2011

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Life is very diverse and living things come in all shapes and sizes.  For this week research different types of living things and write about them. 

Step by step directions:
  1. Look up two types of plants; one example of a vascular plant and one example of a non-vascular plant.  Please write their scientific name (genus and species) and provide a brief description of them. (5 points)
  2. Look up two types of animals; one example of a vertebrate and one example of an invertebrate.  Please write their scientific name (genus and species) and provide a brief description of them. (5 points)
  3. Look up one example of a single cellular organism and one example of a multi-cellular organism (you can use one of your examples from above if you want.  Write a brief description and their scientific name. (5 points)
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