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Organism Interactions What features enable fish to survive in an underwater environment? What do you know? • Adapting to the • Symbiosis environment • Mutualism • Natural selection • Commensalism • Niche • Parasitism • Competition • Predation • Population size • Predator adaptations • Prey adaptations Make a foldable for notes! • Fold a paper “hot-dog” style • Take one flap and cut 4 lines that are equal distance apart • Put your name on the back side • Write one word per flap: • • • • • Competition Predation Mutualism Commensalism Parasitism Reading Time • Read pages 24-31 in your textbook • When you reach a word on your foldable do the following: 1. On the inside flap, on the back of the word, write the definition 2. On the inside flap, on the right side give some examples (words and pictures) On the back • Symbiosis • A close relationship between organisms • Natural Selection • Unique characteristics best suited for survival are passed on from generation to generation Types of Living Relationships • Predator/prey - one species gets food the other is eaten. • Commensalism - one species benefits. The other is neither harmed nor helped. • Mutualism - two species working together both are benefitted. • Parasitism - One species is benefitted the other is harmed and sometimes killed. On the back • These symbiotic relationships all have to do with making things easier (using less energy) on one or both organisms involved. • Parasites get energy from host • In mutualism organisms work together to save energy • Commensalism one organism doesn’t waste as much energy • Predators have adaptations so prey are easier to catch (less energy used) and prey have adaptations that make them harder to catch (more energy required for predator) Examples Galore! • Amazing Symbiosis: Ant Army Defends Tree: https://www.youtube.com/watch?v=Xm2qdxVVRm 4 • Symbiosis: Mutualism, Commensalism, and Parasitism: https://www.youtube.com/watch?v=zSmL2F1t81Q &list=PL-Bdd6Cexp8rAibIZn1jLi3hN9FGZZGoU • World's Deadliest - Zombie Snails: https://www.youtube.com/watch?v=Go_LIz7kTok • A tapeworm hatches inside a cow. When they hatch, they eat all the food in the cow’s stomach as he eats it. This would be an example of what type of symbiosis? A. Commensalism B. Mutualism C. Parasitism • The animal doing the hunting is the A. Predator B. prey • A bird eats fleas off a hippos back. This is an example of what type of symbiotic relationship? A. Commensalism B. Mutualism C. Parasitism How Predators and Prey Affect Each Other • Worksheet-Organisms Interactions Due 9/19