pyramid of numbers , food chain and food web

What do the arrows in the food chain indicate about the flow of energy in an ecosystem?

• Energy is continuously recycled by the organisms in an ecosystem.

• Energy flows in one direction in an ecosystem, from producers to consumers.

• More of the available energy in an ecosystem is given to large animals than to small animals.

• Organisms at the end of the food chain receive more energy than those at the beginning.

Tags

NGSS.MS-LS2-3

How would the removal of earthworms from the food chain affect the other organisms?

• The number of bass will increase.

• The number of crayfish will decrease.

• The crayfish will get their energy directly from the sun.

• The number of bass and ospreys (bird) will increase.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Interactions in an ecosystem result from the transfer of matter and energy from producers to consumers and eventually decomposers. What are the forms of energy transfer from numbers 1 through 4?

• Chemical energy to chemical energy

• Light energy to chemical energy

• Chemical energy to heat energy

• Heat energy to mechanical energy

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

The diagram shows part of an aquatic food web for a stable lake ecosystem in Connecticut. What is the source of energy for the algae?

• waves

• sunlight

• bacteria

• rotifers, water fleas and tadpoles

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

All food webs and food chains begin with _________________.

• primary consumer

• producers

• secondary consumers

• tertiary consumers

In this energy pyramid, which organisms have the most energy available?

• Producers
• Carnivores
• Herbivores
• Top Predator

Tags

NGSS.MS-LS2-3

In an ecological pyramid, which type of organism always has the least amount of energy available?

• Producers

• Herbivores

• Carnivores

• Apex Predator

Tags

NGSS.MS-LS2-3

If there are 100 Kcal of energy available in the producers, how much energy would be available in the primary consumers?

• 10 Kcal

• 1 Kcal

• 100 Kcal

• 1000 Kcal

Tags

NGSS.MS-LS2-3

Which organism is the carnivore?

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Which organism is the omnivore?

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