Ecological Levels, Ecological Relationships and Food Webs

Food webs are models that show:

• one sequence of producers and consumers.

• complex networks of feeding relationships.

• stored energy in food chains.

• only primary consumers in an ecosystem.

Tags

NGSS.MS-LS2-3

What is an organism that gets its food by eating other living organisms?

• Consumer

• Producer

• Autotroph

• Decomposer

Tags

NGSS.MS-LS2-2

Which of the following is a primary consumer in this food web?

• Owl

• Blue jay

• Grasshopper

• Snake

Tags

NGSS.MS-LS2-3

The blue jay and the grasshopper in this food web represent what type of ecological relationship?

• mutualistic

• parasitic

• commensalistic

• predator-prey

Tags

NGSS.MS-LS2-2

Symbiosis is a close relationship between two species that benefits at least one of the species. Which is NOT a type of symbiotic relationship?

• mutualism

• predation

• commensalism

• parasitism

What part of an ecosystem does this picture best show?

• predator population

• habitat

• competitive exclusion principle

What is the collective term for all of the parts of the planet where life can be found?

• biosphere

• biome

• community

• population

In this food web which organism has 3 carnivorous predators and a consumer-producer relationship at the same time.

• 1

• 3

• 5

• 7

Tags

NGSS.MS-LS2-2

What is commensalism?

• One organism feeds on another

• Both organisms benefit from their relationship

• One organism benefits and the other is neither helped nor harmed

• One organism benefits while the other is harmed

Tags

NGSS.MS-LS2-2

If the white-tailed deer population decreased, the coyote population would decrease, too. This is an example of a(n):

• limiting factor

• keystone species

• adaptation to predation

Tags

NGSS.MS-LS2-4