Bell RingerPick up new sheet Describe mutualism.
Organisms benefit from interaction! • Symbiosis—a relationship between two or more kinds of organisms that lasts over time. • Repeat after me:
Mutualism—a symbiotic relationship that benefits both organisms • Repeat after me!
Commensalism—a symbiotic relationship that benefits one organism without harming the other. • Repeat after me! • Example • Orchids growing on trees in the rain forest • Barnacles growing on the backs of whales.
Parasitism—a symbiotic relationship where one organism benefits and the other is harmed. • Repeat after me! • Example • Ticks on dogs • Harms the dogs by taking the dogs blood
Questions • 1. How do organisms benefit from interactions? • 2.Describe each photo onpage 159 • How are the pictures alike? • How are the pictures different? • Do all the birds eat the same thing? Explain?
Niche • What is your niche? • How can an empty niche affect the environment?
Homework Answer the questions from the power point. Make a set of flashcards for words in yellow on page 139 right side. DUE on Wednesday!