Ecosystems Test

Two species of turtles in a pond use the same species of fish as their food. The struggle of the turtles to survive as they use the same limited resource is called ___________.

• variation
• competition
• mutualism
• commensalism

In a garden ecosystem, a bee has a relationship with a flowering plant, and that relationship is an example of mutualism. Which effect does this relationship have?

• The bee and the plant both benefit.
• The bee and the plant are both harmed.
• The bee is harmed and the plant benefits.
• The bee benefits and the plant is harmed.

Tags

NGSS.MS-LS2-2

In the Everglades, a heron has relationships of predation with different organisms. What is the one organism in the food web that represents the heron’s prey?

• Bladderwort
• Carp
• Turtle
• Alligator

Tags

NGSS.MS-LS2-4

In a prairie ecosystem, nitrogen and other matter builds up in animal wastes. Which organisms return this matter to the ecosystem by breaking down wastes?

• producers
• decomposers
• primary consumers
• secondary consumers

Tags

NGSS.MS-LS2-3

A desert ecosystem includes grasses, mice, snakes, and hawks. As you move up the energy pyramid of this ecosystem, each level has __________ energy than the one below it?

• more
• less
• the same

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Dr. Hernandez is a biologist investigating the ecosystem of the lightning whelk, a sea snail found along the Atlantic coast. She collects data about the whelk and its relationship to other organisms in its ocean ecosystem. She records the data in the table. Based on the data in the table, how should she classify the whelk?

• carnivore
• herbivore
• omnivore
• scavenger

Tags

NGSS.MS-LS2-1

Banana slugs live on the ground in moist forests of the Pacific Northwest. They consume and break down a variety of materials, including small dead animals and rotting leaves. Which term describes banana slugs?

• carnivores
• consumers
• decomposers
• producers

Which organism in the forest ecosystem contains the least amount of total energy?

• grasses
• mice
• snakes
• hawks

Tags

NGSS.MS-LS2-3

In some grassland ecosystems, lions are predators that consume zebras. In several estuary ecosystems, fish lice are parasites that consume the blood of fish. How are these two relationships of predation and parasitism similar?

• Only one organism in each relationship dies.
• Both organisms in each relationship are harmed.
• Only one organism in each relationship benefits.
• Neither organism in each relationship is harmed.

Tags

NGSS.MS-LS2-2

Cyanobacteria, also known as blue-green algae, are a kind of bacteria found in many lakes. These organisms make their own food through photosynthesis. Small animals including mayfly larvae eat the cyanobacteria, and small fish such as yellow perch eat the larvae. The small fish provide food for larger fish, such as walleye. Which level of the food pyramid represents the energy role of cyanobacteria in the lake ecosystem?

• 1
• 2
• 3
• 4

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3