Bio - Biomass and Energy Pyramids

Sea otters move into the ocean bay. They eat all the sea urchins. This change will cause the

• kelp to have less food

• crabs to have more food

• sea ducks to have less food

• arctic foxes to have more food

Which chart correctly shows three of the organisms according to their roles in cycling matter in the marine food web?

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Which statement best describes what will happen if the population of herbivores in the community decreases?

• the population of foxes will increase

• the population of hawks will increase

• the population of rabbits will increase

• the population of meadow plants will increase

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Which statement best describes the flow of energy as it passes through the organisms in the pyramid?

• energy flows through the organisms from bottom to top and increases at each level

• energy flows through the organisms from bottom to top and decreases at each level

• energy flows through the organisms from top to bottom and increases at each level

• energy flows through the organisms from top to bottom and decreases at each level

Which energy pyramid best represents the data in the table?

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Which of the following trophic levels would have the LEAST amount of available energy?

• Producers

• first order consumers (primary consumers)

• second order consumers (secondary consumers)

• third order consumers (tertiary consumers)

Which statement is true, based on the diagram?

• energy flows through a community from the sun to producers and then to consumers

• nutrients are available to producers, but not consumers

• nutrients AND energy both come from sunlight

• some trophic levels have no available energy

The available energy in this ecosystem

• decreases as it flows from consumer to producer

• remains constant as it flows from consumer to producer

• decreases as it flows from producer to consumer

• increases as it flows from producer to consumer

If animals eat plants to get energy, where do plants get their energy?

• soil

• water

• wind

• sun

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