Dynamic Nature of Ecosystems

Which type of symbiosis involves both species benefitting? +/+

• Mutualism

• Commensalism

• Parasitism

Which type of symbiosis involves one species benefitting while the other is harmed? +/-

• Mutualism

• Commensalism

• Parasitism

Which type of symbiosis involves one species benefitting while the other is unaffected? +/0

• Mutualism

• Commensalism

• Parasitism

Which type of ecological succession begins on bare rock (no soil)?

• Primary

• Secondary

• Both

Which type of succession would occur here?

• Primary

• Secondary

• Both

6.The first species to populate an area after a disturbance is called:

• A pioneer species

• A pilgrim species

• A founder species

• A primary species

Tags

NGSS.MS-LS2-1

Both the lion and the cheetah eat some of the same prey in this ecosystem. Two organisms going after the same resource is known as

• Mutualism

• Parasitism

• Competition

• Commensalism

Coyote populations have been increasing in recent years. Which would not be a reason for their increase?

• More food is available

• Less competition from other predators

• Less available habitat to live in.

• Less threat of being hunted by humans

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

If the populations of grasshoppers would decrease, what affect would that have on the population of lizards?

• Increase

• Stay the same

• Decrease

• Unable to determine

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

If the population of rattlesnakes were to decrease, why would that help to increase the population of hawks?

• Rattlesnakes eat hawks

• Hawks eat rattlesnakes

• Rattlesnakes and hawks both eat kangaroo rats.

• It would not help the hawk population.

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

NGSS.MS-LS2-4