3.9A Food Chains

Where does the energy in a food chain begin?

• animal

• insect

• sun

• plant

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112.14.b.9.B

What would happen to this food chain if all the frogs were killed?

• The hawk population would increase because of too much food, and the cricket population would decrease due to lack of food.

• The cricket population would decrease, and the snakes would have to find another food source.

• The cricket population would grow because there would not be enough frogs to eat all the crickets.

• The grass would have no predators and would cover the whole meadow.

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112.14.b.9.B

When a hawk eats a snake, the hawk--

• gives energy to the snake

• gets shelter from the snake

• gets energy from the snake

• communicates with the snake

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112.14.b.9.B

Birds, deer, and other animals live in forests. Following a forest fire, the forest environment must go through a period of regrowth in order to once again sustain life. How can bires survive during the period of regrowth?

• The birds will need to grow new feathers.

• The birds will need to become producers.

• The birds will not be able to survive the significant changes in their habitat.

• The birds will need to find another source of food and shelter.

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112.14.b.9.B

The diagram shows a food chain.

What do the arrows demonstrate in this diagram?

• Predators eating prey

• Flow of energy

• Habitat

• Organisms on the endangered species list

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112.14.b.9.B

A group of students has been given a pond water sample. They have been asked to study the microscopic organisms in the water sample to determine how these organisms get energy. What should the students do before they place the pond water samples under the microscope?

• Talk to friends about weekend plans

• Get snacks to drink

• Turn off the lights

• Put on gloves

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112.14.b.9.B

Energy flow through an environment from one organism to another.

Which of the following organisms would most likely continue this flow of energy?

• 
• 
• 
• 

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112.14.b.9.B

A food chain diagram is shown below.

If krill were removed from this food chain--

• penguins would overpopulate the environment

• penguins would eat phytoplankton

• phytoplankton would overpopulate the environment

• phytoplankton would perish

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112.14.b.9.B

Students observe a field of blooming plants, trees, grasses, birds, bees, and many other organisms. They are asked to consider what would happen if the bees were removed from the environment. Which student forms the best conclusion?

• Student 1:

  There would be no change in the environment because the bees do not help the environment.

• Student 2:

  Many of the blooming plants would not survive because the bees would not be present to pollinate them.

• Student 3:

  The bird population would increase because the bees would not be consuming them.

• Student 4:

  The grasses would die because the bees would not be present to provide water.

Tags

112.14.b.9.B