Trophic Level

The efficiency of energy transfer from a lower trophic level to the next highest level is roughly

• 1%
• 10%
• 100%
• 1000%

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

Trophic levels are represented by

• squares

• rectangles

• pyramids

• lines

Which animal is the apex predator?

• hawk
• lizard
• snake
• grass

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NGSS.MS-LS2-3

Which animal is not the apex predator but, a predator to a mouse?

• hawk
• rabbit
• snake
• grass

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NGSS.MS-LS2-2

NGSS.MS-LS2-4

Why is a shark a carnivore.

• because it eats seaweed
• because it eats dead animals
• because it eats sand 
• because it eats other animals

Tags

NGSS.MS-LS2-3

The unique position that a species has in the physical use of its habitat and in its function (job) within an ecosystem  

• producer
• biotic factors
• ecosystem
• niche

In the energy pyramid here, how much of the energy in each level gets lost as heat or used by the organism for survival?

• 80%
• 90%
• 10%
• 20%

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

The arrows in a food chain or web represents what?

• They point to the organism that is being eaten.
• It shows how sunlight flows within an ecosystem.
• They show what direction the energy is flowing between organisms. 
• They represent how water is transferred within a habitat.

Tags

NGSS.MS-LS2-3

Biomass refers to

• Chemical Energy
• Light Energy
• Rank in the feeding heirarchy
• Amount of living tissue in an ecosystem

Why do we sometimes use a food pyramid to illustrate feeding relationships?

• To change things up a bit
• Pyramids show you need a lot more producers than consumers
• To show you need more consumers than decomposers
• Pyramids are neat

Tags

NGSS.MS-LS2-3