Ch. 3/22 Ecosystems Test

Autotrophs can be classified into two groups according to which of these properties?

• energy source, either sunlight or chemicals

• food type, either plant matter or animal matter

• water quality, either fresh water or saltwater

• food quality, either living matter or dead matter

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

Termites are able to digest wood because of microbes that live in their gut. The relationship between a termite and the microbes inside it is an example of what type of symbiosis?

• commensalism

• mutualism

• parasitism

• a predator-prey relationship

Tags

NGSS.MS-LS2-2

Laney is asked to research an organism that performs denitrification. Which strategy is the MOST LIKELY to be successful?

• Look for phytoplankton that perform photosynthesis.

• Look for soil bacteria that convert nitrates to nitrogen gas.

• Look for ocean-dwelling organisms that perform chemosynthesis.

• Look for soil bacteria that convert atmospheric nitrogen to nitrates.

Tags

NGSS.MS-LS2-3

Which biogeochemical cycle does NOT have a part that occurs in the atmosphere?

• Water

• Phosphorous

• Nitrogen

• Carbon

Tags

NGSS.MS-ESS2-4

Which of the following BEST describes the flow of energy through a food chain?

• Energy flows between primary producers and consumers, in either direction.

• Energy flows from consumers to primary producers, in one direction only.

• Energy flows between primary producers and consumers, in an endless cycle.

• Energy flows from primary producers to consumers, in one direction only.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

Walleyes and northern pike are both species of fish that live in freshwater lakes. Many lakes maintain large, healthy populations of both of these fish species year after year. Which statement about walleyes and northern pike is MOST USEFUL in explaining how they are able to live together in the same habitat?

• The two species have different ranges of tolerance to oxygen content in water.

• The two species are adapted to eat the same types of food.

• The two species have different ranges of tolerance to temperature.

• The two species are adapted to eat different types of food.

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-1

Scientists have classified the sea otter as a keystone species in communities along the Pacific coast of North America. This classification depends on which property of the sea otters?

• Sea otters act to maintain a wide variety of other populations in the community.

• Sea otters provide food for all of the predators of the community.

• Sea otters are the largest, most massive members of the community.

• Sea otters have the highest population in the community.

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Year after year, Xavier raises a vegetable garden in the same plot of soil. He observes that the plants grow less abundantly from one year to the next, and they produce fewer vegetables. Which of these processes could help explain Xavier's observations?

• the rate at which soil bacteria perform chemosynthesis

• the rate at which soil bacteria perform nitrogen fixation

• the rate at which soil bacteria perform denitrification

• the rate at which soil bacteria perform photosynthesis

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-LS1-5

Which of the following is NOT a process that returns water to the atmosphere?

• • Evaporation

• • Transpiration

• • Precipitation

Tags

NGSS.MS-ESS2-4

Which of the following statements best describe a decomposer ONLY?

• recycles materials from dead matter back into the ecosystem

• denitrifies rotting material, adding nitrogen gas back into the atmosphere

• consumes living plants and animals

• consumes organisms that have already died in the ecosystem 

Tags

NGSS.MS-LS2-2