Trophic Levels

This energy pyramid shows how much energy is transferred from one level to the next in an ecosystem.

 The amount of energy at each level is given in joules (J).

Which is the BEST estimate of the amount of energy available at the secondary consumer level?

• 0.1 J

• 1 J

• 100 J

• 10 J

Tags

NGSS.MS-LS2-3

The chart describes the amount of energy at each trophic level. The producer has the highest energy. What is the energy of the secondary consumer?

• 200 J

• 2 J

• 22,000 J

• 22 J

Tags

NGSS.MS-LS2-3

Which statement BEST explains the flow of energy in the ecosystem?

• 
  

• Energy is not conserved in the ecosystem and surroundings.

• The most energy is lost to the environment between secondary and tertiary consumers.

• The greatest transfer of energy is from the producers to the primary consumers.

• Energy transfer to the coyote would decrease if the coyote preyed directly on prairie dogs.

Tags

NGSS.MS-LS2-3

The plants are the producers, the insects the primary consumers, the iguana is the secondary consumer. What is the tertiary consumer?

• monkey

• boa

• jaguar

• tapir

Which statement BEST describes the transfer of energy from organism to organism as matter moves through a food web?

• Energy moves in both directions between each trophic level.

• Most of the energy is lost to the environment between each trophic level.

• Most of the energy at each trophic level is passed on to the next trophic level.

• • The energy available remains the same as matter passes through different trophic levels.

Tags

NGSS.MS-LS2-3

Select the true statement below based on the ocean energy pyramid. Remember only phytoplankton can make their own food through photosynthesis.

• Sharks can get their energy and to produce food

• Phytoplankton uses energy to grow and produce food. They are major producers.

• Herring uses energy from phytoplankton to produce food.

• Zooplankton does NOT need energy for growth.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

In this picture you have the grass as producer and the rabbit as a primary consumer.

Which statement below is FALSE?

Remember there are no decomposers living on decaying matter in the picture!

• Both the grass and rabbit need energy to live.

• The rabbit eats the living grass and breaks down the sugar molecules to get energy.

• The grass is a producer and gets energy and matter from the nonliving environment.

• The grass gets its energy from dead and decaying matter.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

As matter passes through a food web, the amount of energy available to organisms changes.

Which statements is INCORRECT?

• Some food energy is lost as heat.

• Plants use energy from the sun to produce food.

• High-level consumers rely on many different organisms to get enough energy to live.

• Lower-level consumers pass all their food energy to higher-level consumers.

In a marine ecosystem, algae carry out photosynthesis. Barracuda eat snapper fish. Reef sharks eat barracuda.

Please review and study this order.

Select the CORRECT answer.

• Barracuda are at the top of the food chain.
• Snapper fish are primary producers.
• Algae are not producers and should not be at the bottom of the energy pyramid.

• Reef sharks are at the top of the food chain.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

How many organisms from the food web belong in trophic level 2?

• one

• two

• three

• four