Photosynthesis
Food Chains
Food Webs
Humans in Food Webs
Random
100
What is the original source of energy for every living organism on Earth?
A. Sun
B. Moon
A. Sun
100
True or False: Food chains show the direct flow of energy passing through an ecosystem.
A. True
B. False
A. True
100
The owl is a predator, and its prey is mice.
What will most likely happen if the number of owls declines?
A. The number of mice will stay the same.
B. The number of mice will increase.
B. The number of mice will increase.
100
The image shows a wetland ecosystem.
If houses and roads are built next to the wetland, what would most likely happen to the populations living in the wetland?
A. The sizes of the populations would increase over time.
B. The sizes of the populations would decrease over time.
C. The sizes of the populations would increase and then remain the same.
D. The sizes of the populations would decrease and then double.
B. The sizes of the populations would decrease over time.
100
The diagram shows organisms in an ecosystem.
Which organism needs sunlight to make its own food?
A. caterpillar
B. frog
C. plant
D. snake
C. plant
200
Plants need several inputs to make food for energy. Which input does a plant most likely get from the ground?
A. carbon
B. carbon dioxide
C. oxygen
D. water
D. water
200
What is the role of the Eagle in this food chain?
A. Producer
B. Primary Consumer
C. Secondary Consumer
D. Tertiary Consumer
D. Tertiary Consumer
200
Which statement is the most accurate prediction about the rise in population of rabbits over the last 4 years according to the roles each animal might play in a food chain?
A. The rabbit population increased because the squirrel population increased.
B. The rabbit population increased because the fox population decreased.
B. The rabbit population increased because the fox population decreased.
200
A logging company has cut down trees to use the lumber for building homes and making paper.
Which best describes how this impacts the forest environment?
A. The clear cutting decreases the rate of erosion of the soil.
B. The clear cutting decreases the size of the habitat for the forest wildlife.
B. The clear cutting decreases the size of the habitat for the forest wildlife.
200
Analyze the food chain provided.
If polar bears were removed from this food chain, the population of which organisms would increase first ?
A. arctic fox
B. blueberry bushes
C. ptarmigan bird
A. arctic fox
300
Choose the correct set of words to fill in the blanks and complete the sentence.
A plant uses ______________ energy from the Sun and converts it into _____________ energy for the plant.
A. Light and Chemical
B. Physical and Thermal
A. Light and Chemical
300
Based on the food chain, which statement best describes the relationship between the grass and the snake?
A. Snakes are decomposers that consume dead grass.
B. Roadrunners are secondary consumers that consume animals that consume the grass.
B. Roadrunners are secondary consumers that consume animals that consume the grass.
300
Which pathway shows one of the most likely effects on fish populations as krill populations decrease?
A. fewer krill more zooplankton less fish
B. fewer krill more zooplankton more fish
B. fewer krill more zooplankton more fish
300
In the past, fishermen caught as many fish as they could. This practice decreased the population of fish over time.
How does the decrease in the amount of fish impact humans the most?
A. Humans have less technology.
B. Humans have less food.
C. Humans have less water.
D. Humans have less air.
B. Humans have less food.
300
The diagram shows the energy flow in a food chain.
Which organism would best fit in the X in the diagram?
A. tree
B. Sun
C. mushroom
D. butterfly
C. mushroom
400
A student wants to grow plants in the basement of his home. He will use artificial light so the plants can carry out photosynthesis. Which of the following is the BEST way to describe what will happen?
A. There will not be any plant growth because there is no natural sunlight.
B. There will be some plant growth, but most plants grow best in natural light.
B. There will be some plant growth, but most plants grow best in natural light.
400
Which of the following list only contains consumers from this food chain?
A. Algae, Zooplankton, Small fish
B. Small fish, Squid, Shark
B. Small fish, Squid, Shark
400
Which statement identifies the most likely outcome if the rabbit population suddenly reduced?
A. Owls would become extinct because they have no food.
B. Mountain lions would have less food available so their population would decrease.
B. Mountain lions would have less food available so their population would decrease.
400
Based on the diagram, which statement is true about the human?
A. The human in the diagram is a carnivore.
B. The human in the diagram is an herbivore.
C. The human in the diagram is an omnivore.
C. The human in the diagram is an omnivore.
400
What do the arrows in the food chain represent?
A. age
B. intelligence
C. size
D. energy
D. energy
500
The equation below describes the process of photosynthesis that takes place within plant cells. What are the products (what is made) of this chemical reaction?
6CO2 + 6H2O + Light Energy → C6H12O6 + 6O2
A. Water and oxygen
B. Carbon dioxide, water, and light
C. Water and carbon dioxide
D. Sugar and oxygen
D. Sugar and oxygen
500
The Sun provides the energy to be used by the living things in the aquatic food chain shown below. Which of the following describes the transfer of energy from a producer to a consumer?
A. From algae to zooplankton
B. From small fish to squid
A. From algae to zooplankton
500
The picture below shows the energy flow through a Chesapeake Waterbird Food Web.
Which of the following would most likely occur to the populations within the food web immediately after the vegetation stops growing?
A. Bald Eagle would increase and Sea Ducks would increase.
B. Geese and Mute Swans would decrease and Tundra Swan would decrease.
B. Geese and Mute Swans would decrease and Tundra Swan would decrease.
500
Humans are a big reason why animals and plants become endangered in the food web. Which of the following ways would humans not negatively affect the food web?
A. Humans destroy habitats of swamps, marshes, and forests to build developments on the land.
B. Humans sometimes bring in plants or animals from foreign places that introduce diseases the native species cannot fight.
C. Many animals are overhunted because of their meat, fur, and other parts that can be valuable.
D. Humans support wildlife habitat and protect the special places where animals live.
D. Humans support wildlife habitat and protect the special places where animals live.
500
The steps in the chart for the process of photosynthesis in plants are out of order.
Which is the correct order?
A. 4, 3, 2, 1
B. 2, 4, 1, 3
C. 1, 3, 2, 4
D. 4, 2, 3, 1
B. 2, 4, 1, 3