Bell Work
1. With out using your notes…write out the 5 levels of environmental organization in order starting from the smallest.
2. Create a food chain using the following: duck, minnow, algae, dog, sun
• SPI 0607.2.1- Classify organisms as producers, consumers, scavengers, or decomposers according to their role in food chain or food web
• SPI 0607.2.2- Interpret how materials and energy are transferred through an ecosystem
• SPI 0607.2.3- Identify the biotic and abiotic elements of the major biomes
• SPI 0607.2.4- Identify the environmental conditions and interdependencies among organisms found in the major biomes
Symbiotic Relationships (pg. 62)• Symbiosis- is a close, long-
term association between two or more species.
• Divided into 3 groups.1. Mutualism2. Commensalism3. Parasitism
Can you see the Symbiotic Relationship?
Mutualism
• Mutualism is a symbiotic relationship where both organisms benefit.
Examples:Human intestine and bacteria
Algae and coral
Commensalism
• Commensalism is the symbiotic relationship in which one organism benefits and the other is unaffected.
• Example:Shark and Remoras
Parasitism
• Parasitism is the symbiotic relationship in which one organism benefits and the other is harmed.
• Example:Tick- outsideTapeworm- inside ahumanWasp and Caterpillar
Why do most parasites not kill their host?• Without the host the parasite
would die.
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