Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Community Interactions: Symbiosis PAGES 403-404 Symbiosis •Symbiosis: close ecological relationship between two or more organisms of different species that live in direct contact Types of Symbiosis •Mutualism (+/+) •Both benefit • Ex: Clown fish get shelter and anemone gets free cleaning Types of Symbiosis •Commensalism (+/0) •One benefits and one is neither helped nor harmed • Ex: Barnacles on Grey Whales Types of Symbiosis •Parasitism (+/-) •Parasite: small and lives on or in the host organism •Usually does not result in immediate death but weakens the host •Evolutionary adaptation keeps the host healthy enough to allow parasite reproduction (coevolution) •Ex: intestinal worms and humans Tapeworm Fluke Tongue Louse What type of symbiosis? •Ticks are arachnids (related to spiders and scorpions) they feed on the blood of mammals. They also can pass on the bacteria that causes Lyme Disease which can lead to death in humans. •Parasitism What type of symbiosis? •Orchids are usually found in dense tropical forests. They can form their base of attachment on the branches of trees and benefit by getting adequate sunlight and nutrition that flows down the branches. The orchids do not grow to a large size, and thus, the host tree is not harmed in any way. •Commensalism What type of symbiosis? •When crocodiles eat, they sometimes get food stuck in their sharp teeth. If the food isn’t removed, it is left to rot and cause infection in the crocodile’s teeth. When a crocodile needs its teeth to be cleaned, it will sit with its mouth wide open. The Egyptian plover bird will then fly into the mouth of the crocodile and eat the food stuck in the crocodile’s teeth. •Mutualism What type of symbiosis? http://www.pbslearningmedia.org/asset/nat08_vid_travco m/ First 1:23 Commensalism Last 40 seconds : Mutualism What type of symbiosis? https://youtu.be/LGyvlt_b3is Parasitism