Energy in Ecosystems

A producer gets energy from _______ and converts it into food.

• dead organic matter

• primary consumers

• the Sun

• secondary consumers

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NGSS.MS-LS2-3

NGSS.MS-LS1-6

Consider the energy pyramid.

Why are there very few organisms toward the top of the pyramid?

• Organisms at the top of the pyramid can only generate energy directly from the sun.

• There is much less energy available at the top of the pyramid.

• Organisms at the top of the pyramid are preyed upon by many other organisms.

• There is too much energy available at the top of the pyramid.

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NGSS.MS-LS2-3

NGSS.MS-LS2-4

Based on the food web, which of the following converts energy from the Sun to make its own food?

• the grass

• the impala

• the cheetah

• the lion

Tags

NGSS.MS-LS1-6

The image shows an aquatic food web.

Which of the following describes how energy is transferred between the crustacean and the dolphin?

• Energy is not transferred between the crustacean and the dolphin.

• The crustacean and the dolphin both transfer energy to each other.

• Energy is transferred from the crustacean to the dolphin.

• Energy is transferred from the dolphin to the crustacean.

Tags

NGSS.MS-LS2-3

Food webs show the feeding relationships among different organisms.

According to the food web shown, what is the relationship between the wheat, the grasshopper, the frog, and the snake?

• The wheat is directly consumed by both the grasshopper and the frog, and the frog and the grasshopper are directly consumed by the snake.

• The wheat is consumed by the grasshopper, the grasshopper is consumed by the frog, and the frog is consumed by the snake.

• The grasshopper consumes the wheat, and the snake consumes the frog, but there is no connection between the other organisms.

• The snake directly consumes the frog, the grasshopper, and the wheat.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Unlike plants, animals cannot make their own food. How do animals obtain the energy they need?

• Animals are able to function without taking energy in from their environment.

• Animals eat other organisms.

• Animals collect solar energy.

• Animals absorb chemicals from their environment.

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NGSS.MS-LS1-7

Which of the following is a consumer in the food web pictured?

• mouse, fox, and owl

• grass only

• owl and fox only

• mouse only

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-2

Which of the following statements is true according to the food web shown?

• Energy flows from producers, consumers, and decomposers to the Sun.

• Energy flows from consumers to decomposers and from decomposers to consumers.

• Energy flows from producers and consumers to decomposers.

• Energy flows directly from the Sun to consumers.

Tags

NGSS.MS-LS2-3

The image shows an aquatic food web.

Which of the following describes how energy is transferred between the dolphin and the shark?

• The dolphin and the shark both transfer energy to each other.

• Energy is transferred from the dolphin to the shark.

• Energy is not transferred between the dolphin and the shark.

• Energy is transferred from the shark to the dolphin.

Tags

NGSS.MS-LS2-3

The picture shows an energy pyramid.

If a squirrel requires 51,000 kcal of energy each year, how much energy is required each year by the plants that it eats?

• 51,000 kcal

• 510,000 kcal

• 5,100,000 kcal

• 5,100 kcal

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6