Ecosystem Interactions and Relationships

This video tutorial helps students prepare for the Alabama science assessment by exploring content standard number nine. It covers the relationships between organisms in ecosystems, focusing on food chains, energy flow, and the roles of producers and consumers. The video also explains the biotic and abiotic components of ecosystems and discusses symbiotic relationships, including parasitism, commensalism, and mutualism.

What is the primary focus of content standard number nine in the Alabama science assessment?

• The laws of motion

• The relationships between organisms and ecosystems

• The structure of atoms

• The history of the Earth

In a food chain, what does the arrow represent?

• The size of the organism

• The color of the organism

• The direction of energy flow

• The speed of the organism

What would happen to the small fish population if krill were removed from the food chain?

• It would become extinct

• It would decrease

• It would remain the same

• It would increase

Which of the following is considered a producer in an ecosystem?

• A hawk

• A plant

• A snake

• A mouse

What is a first-level consumer?

• An organism that eats plants

• An organism that eats other animals

• An organism that decomposes organic material

• An organism that makes its own food

What term is used to describe all living things within an ecosystem?

• Habitat

• Population

• Community

• Abiotic

Which of the following is an example of an abiotic component in an ecosystem?

• A fish

• A rock

• A tree

• A bird

In a symbiotic relationship, what does parasitism involve?

• One organism benefits, the other is harmed

• One organism benefits, the other is unharmed

• Neither organism benefits

• Both organisms benefit

What is an example of commensalism?

• A lion hunting a zebra

• A bee pollinating a flower

• A tick feeding on a dog

• A bird building a nest in a tree

In mutualism, how do the organisms interact?

• Both benefit

• One benefits, the other is unaffected

• Both are harmed

• One benefits, the other is harmed