Ecology

A relationship between two organisms in which one organism benefits and the other is unharmed...

• Mutualism

• Commensalism

A relationship between two organisms in which both organisms benefit.

• Mutualism

• Competition

Which of he following interactions demonstrates a PARASITIC relationship?

• A mosquito sucking blood from a warm blooded animal.

• A group of baby otters floating together to help warm each other in the cold waters.

• Many fish swimming together to protect each other from predators.

• Two hyenas fighting over a female to mate with.

What are the ecological levels of organization from smallest to the largest?

• organism, population, community, ecosystem, biome, biosphere

• organism, community, population, ecosystem, biome, biosphere

Invasive species alter the ecosystem by _____ in number quickly. This leads to _____ food for the native species.

• increasing, less

• increasing, more

• decreasing, less

• decreasing, more

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

What is an invasive species?

• A native (naturally found) species which are added to an area. 
• A non-native (not naturally found) species added to an area. 
• A keystone species in an environment
• none of the above

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Why do the populations of invasive species grow so quickly?

• Invasive Species are native to an area.

• Invasive species are prey to many animals.

• Invasive species have no predators.

• Invasive species keep the ecosystems in equilibrium.

Tags

NGSS.MS-LS2-4

What is a keystone species?

• A species that helps to hold an ecosystem together

• A species that lives in or around rocks

• Keys and stones have nothing to do with ecology

• A keystone isn't a living thing, it's just a stone

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-2

A species that maintain biodiversity by keeping prey populations controlled are called...

• Introduced Species
• Apex Predators
• Invasive Species
• Keystone Species

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

What is a keystone species?

• A species that lives in a national park

• A species that has a large role in keeping the ecosystem balanced

• A species that is close to extinction