Chapter 5 Lesson 2

Interactions Among

Living Things

food chainfood webherbivorecarnivoreomnivorepredator

preyscavengersymbiosismutualismparasitism

commensalism

food chain - a group of living things that form a chain in which the first living thing is eaten by the second, the second is eaten by the

third, and so on

food web – n. a group of food chains in an ecosystem that are connected

herbivore – n. an animal that eats only plants

carnivore – n. an animal that eats only the flesh of other animals

omnivores – n. plural of omnivore; an animal that eats both animal flesh and plants

predators – n. plural of predator: an animal that hunts and kills others animals for food

prey – animals that are hunted for food.

scavenger – n. an animal that feeds on other animals

symbiosis – a relationship between two living things that lasts over a period of time

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mutualism – when a relationship between two kinds of organisms benefits both of them

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parasitism – when an organism lives on or in another organism and may harm that organism.

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commensalism – when an organism benefits from another organism without harming or

helping it.

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