Unit 4 Interactions in the Ecosystem Review

Which of the following concepts refers to the variety of different organisms in an ecosystem?

• heredity

• biodiversity

• variation

• food web

Which of the following factors in an ecosystem is abiotic?

• polar bear

• earthworm

• tardigrade

• temperature

Which of the following factors in an ecosystem is biotic?

• light

• salinity

• producer

• pH

Tags

NGSS.MS-LS1-4

NGSS.MS-LS2-4

Which of the following organisms in the food chain will get the largest amount of energy?

• phytoplankton

• shrimp

• tuna

• humans

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which of the following organisms in the food chain will get the least amount of energy?

• phytoplankton

• shrimp

• tuna

• humans

Tags

NGSS.MS-LS2-3

In the following food chain, which organism is the primary consumer?

• sardine

• shrimp

• tuna

• humans

Tags

NGSS.MS-LS2-3

If the producer has absorbed 35,000 J of energy from the sun, how much energy will the snake get from the following food chain?

• 3500 J
• 350 J
• 35 J
• 3.5 J

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Study the following food web, which of the following scenarios would happen if the eagle population had a disease outbreak?

• Snake population will increase.

• Grasshopper population would increase.

• There would be more grass in the ecosystem.

• Trees would decrease in population.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

In the nitrogen cycle, nitrogen gas from the atmosphere is absorbed into the geosphere when bacteria converts it into nitrates and ammonia. Which of the following specific processes of the nitrogen cycle occur?

• nitrogen fixation

• ammonification

• nitrification

• denitrification

How is oxygen absorbed from the atmosphere into the biosphere?

• photosynthesis

• respiration

• combustion

• decomposition

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3