Symbiotic Relationships

Symbiotic Relationships Watch the video to review the three symbiotic relationships: mutualism, commensalism, and parasitism. Match the term to the definition. Commensalism- A symbiotic relationship where one species benefits and the other is not helped or harmed. (+,0)Mutualism- A symbiotic relationship where both species benefit. (+,+)Parasitism- A symbiotic relationship where one species benefits and the other is harmed. (+,-) Sort each example into the correct type of symbiotic relationship. Mutualism Shrimp dig burrows into sand and the goby fish moves in; in return the goby fish will touch the nearly blind shrimp when a predator is near. Clown fish live in anemones providing scrap food and aeration, in return the clown fish are protected by the anemone. Animals eat fruits with seeds and then disperse the seed in their feces to spread the seeds. Algae provides camouflage for the spider crab, in return the crab provides habitat for the algae. Commensalism Hermit crabs use the shells of dead snails for homes. Cattle egrets (birds) eat insects stirred up from the movement of grazing cows. Remoras (sucker fish) attach under sharks to receive protection and scrap food, and the shark is not affected. Barnacles attach to whales and filter plankton from the passing water. The whale receives no benefit or harm. Parasitism Spider hawk wasps lay eggs on a spider which then hatch and eat the spider alive. Bedbugs feed on human blood through a sharp proboscis they cheerfully sink into any exposed skin. Cymothoa exigua eats and replaces the tongues of fish and other warm-blooded organisms, feeding on the blood that should be flowing to the tongue. Mistletoe attaches to a host plant with a special root called a haustorium, which it uses to drain the host of water and nutrients.