Chapter 5- How Ecosystems Work

Which of the following statements is not true of consumers?

• They get energy indirectly from the sun

• They are also called heterotrophs

• They make their own food

• They sometimes eat other consumers

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NGSS.MS-LS2-3

Which of the following is correctly arranged from the lowest trophic level to the highest trophic level?

• Bacteria, frog, eagle, racoon

• Algae, deer, wolf, hawk

• Grass, mouse, snake, eagle

• Grass, bass, minnow, snake

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NGSS.MS-LS2-3

Communities of bacteria have been found living thousands of feet underwater. Which of the following statements is a proper conclusion to draw about these bacteria?

• Somehow they are conducting photosynthesis.

• They are living on borrowed time

• They were somehow introduced by human activities

• They use an energy source other than sunlight (Chemosynthesis).

Which of the following pairs of organisms probably belong to the same trophic level?

• humans and bears

• bears and deer

• humans and cows

• both (Humans and bears) and (Humans and cows)

Tags

NGSS.MS-LS2-3

From producer to secondary consumer, about what percentage of energy is lost?

• 10%

• 90%

• 99%

• 100%

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NGSS.MS-LS2-3

NGSS.MS-LS1-6

Which of the following statements about the nitrogen cycle is not true?

• Animals get nitrogen by eating plants or other animals

• Plants generate nitrogen in their roots

• Nitrogen moves back and forth between the atmosphere and living things

• Decomposers break down waste to yield ammonia

Tags

NGSS.MS-LS2-3

Which of the following are most likely to be the pioneer organisms on an area of bare rock?

• Trees

• Shrubs

• Lichens

• Perennial Grasses

Excessive use of fertilizer that contains nitrogen and phosphorus

• Affects the carbon cycle

• May cause algal blooms in waterways

• causes soil erosion

• contributes to primary succession

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

NGSS.MS-LS2-5

What energy role describes an organism that makes its own food, usually by using energy from the sun?

• consumer
• producer
• carnivore
• decomposer

Tags

NGSS.MS-LS1-6

Hetetrotroph is another word (a synonym) for

• scavenger
• producer
• autotroph
• consumer