Interdependent Relationships

Cattle egrets forage (feed) in fields among cattle. The egret gets easy access to flying insects stirred up by the cattle, and the cattle don't care if they are there or not.

• mutualism

• commensalism

• competition

• parasitism

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Red-billed oxpeckers are birds that often feed on parasites that infest impala.  This is an example of _______.

• commensalism

• mutualism

• neutralism

• competition

Tags

NGSS.MS-LS2-2

Which of these describes a mutually beneficial relationship between two organisms?

• A dog with worms in its intestine

• A turtle and a snail that both eat grass live in a river

• A honeybee pollinating a plant and receiving nectar for food

• A small fish attached to a shark, eating tiny pieces of the shark's food as it floats

A close long term association between 2 or more species

• Mutualism

• Commensalism

• Symbiosis

• Parasitism

Why is interdependence important in ecosystems?

• It allows ecosystems to be unaffected by changes

• It ensures that no species have any interaction

• It helps organisms to survive by relying on each other for food, shelter, and other needs

• It makes ecosystems simpler

Tags

NGSS.MS-LS2-2

How do predators and prey depend on each other in an ecosystem?

• Predators control the population of prey, and prey provide food for predators.

• Predators provide food for prey.

• Prey control the population of predators.

• Predators and prey do not depend on each other.

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What is a food web?

• A single pathway of feeding relationships among organisms in an ecosystem.

• A system that recycles nutrients in an ecosystem.

• A complex network of feeding relationships among organisms in an ecosystem.

• A method of decomposing organic material.

Tags

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What role do herbivores play in a food chain?

• They are producers.

• They are primary consumers.

• They are secondary consumers.

• They are decomposers.

Tags

NGSS.MS-LS2-2

How do animals contribute to the balance of an ecosystem?

• By building shelters

• By consuming plants and other animals

• By creating water sources

• By planting trees

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Relationship where one organism benefits and the other is neither harmed nor helped

• Commensalism

• Parasitism

• Mutualism

• Competition