Tuesday 4/1 - ER Mid Unit Test

Last updated 14 days ago
10 questions
Use the food chain below to answer questions 1 - 3.

2

The energy that the frog uses to grow, move, and build its body originally came from the ______.

A) Sun
B) Plants
C) Caterpillars
D) Snakes

2

When the frog eats, what happens to the food molecules it just ate? (Select all that apply)

A) They turn into body molecules.
B) They are released as oxygen.
C) They turn into food molecules.
D) They are released as energy.

2

Cane toads are a species of toad that is toxic to snakes. Cane toads will eat caterpillars. If cane toads are released into this ecosystem, what will happen to the population of frogs? Why?

Criteria For Success
  1. Identify what the cane toad eats in the food chain.
  2. Explain how adding the cane toad into the ecosystem affects the frogs.
If cane toads are released into this ecosystem, the population of frogs will ___________. This will happen because _____________.

Use the food web below to answer questions 4 - 6.


2

What is the original source of energy in this ecosystem?

A) Plants/Producers
B) Sun
C) Alligator
D) Microscopic Algae

2

If the young mosquito larvae all die, what will happen to the grass carps?

A) They will no longer have the food they need to grow and build their bodies.
B) They will still grow and build their bodies because they have other sources of food.
C) They will die because the frogs will be able to eat all of their food.
D) They will still grow and build their bodies because they do not eat mosquito larvae.

2

Which of the following shows a correct way that matter moves through this ecosystem?

A) Marsh Grass ➜ Frog ➜ Great Blue Heron ➜ American Alligator
B) Bladderwort Plant ➜ Grass Carp ➜ Rabbit ➜ Alligator
C) Algae ➜ Young Mosquito ➜ Grass Carp ➜ Alligator
D) Algae ⬅ Young Mosquito ⬅ Grass Carp ⬅ Alligator

Use the food web below to answer question 7.


The food webs above are from the same ecosystem but at different times.

In 2015, there was a fire which destroyed all of the plants. Ecologists were able to bring back the grass after the fire.
3

Ecologists are concerned about this ecosystem because the number of rabbits, mice, grasshoppers, and birds has not grown since the fire and have started to decrease.

Using what you have learned so far and the food webs above, write a scientific argument explaining why you think the numbers of rabbits, mice, grasshoppers, and birds have started to decrease.

Criteria For Success
  1. Identify what caused the rabbits, mice, grasshoppers, and birds to decrease.
  2. Explain why the number of rabbits, mice, grasshoppers, and birds decreased after the fire.

The numbers of rabbits, mice, grasshoppers, and birds has started to decrease because __________. In the food web, it shows __________. This means __________.

Read the scenario below. Use the information in the passage and picture to answer questions 8 – 9.

A fifth grader named Shayleah decides to study plant growth at home. Shayleah buys five plants that are all the same height. She plants them in five separate containers. Each plant has different conditions, as shown below. She brings a photograph of her experiment to school to show her class.

4

Carefully read the labels on plants #1, #2, #3, and #5. Will the plant grow or not grow? Fill out the table to share what you think will happen to each plant:

Plant #1 will __________.
Plant #2 will __________.
Plant #3 will __________.
Plant #5 will __________.

Her teammate Laron sees the photograph and says “Plant # 4 will die because plants cannot grow without soil.”

Do you agree or disagree with Laron’s claim? Support your answer with evidence from the simulation.

Use evidence from the simulation to support your answer (how the sim shows what plants need to live and grow).

https://learning.amplify.com/ecosystemrestoration/#/

4

Her teammate Laron sees the photograph and says “Plant # 4 will die because plants cannot grow without soil.”

Do you agree or disagree with Laron’s claim? Support your answer with evidence from the simulation.

Criteria For Success
  1. Write whether you agree or disagree with Laron.
  2. Use evidence from the simulation to support why you agree or disagree with Laron.
  3. Explain how plants grow.
I _____________ with Laron. In the simulation, it shows _____________. This means plants grow by _____________.

Use the flowchart below to answer question 10.

The flowchart below represents the process of photosynthesis. One step is labeled X.

2

Which activity occurs at “X” in the flow chart above?

A) Plants are eaten by animals for food.
B) Plants release water into the soil.
C) Carbon dioxide and water are used to make food.
D) Animals breathe out carbon dioxide.