Energy Transfer
Symbiosis
Food Web
Biology
Biodiversity
100
During an investigation on energy, Seth rolls marbles of four different masses down a ramp.
Which size marble will have the greatest kinetic energy when it reaches the bottom of the ramp?
A 2 grams
B 3 grams
C 5 grams
D 6 grams
D 6 grams
100
The kookaburra bird sometimes nests inside termite mounds that are attached to trees. The kookaburra gets a safe place to seek shelter and lay her eggs, while the hole made by the bird helps circulate air, keeping the termites from getting too hot or too cold.
Which ecological relationship is demonstrated in this example?
A commensalism
B competition
C mutualism
D parasitism
C mutualism
100
Study the food chain.
What niche does the owl occupy?
A decomposer
B primary consumer
C producer
D secondary consumer
D secondary consumer
100
Which situation shows an interaction between abiotic and biotic factors?
A a bear catching a fish
B a mouse breathing in air
C a volcano pouring out lava
D a bird living on a tree branch
B a mouse breathing in air
100
As the human population grows, deforestation and urban development increase. What effect will this have on the aquatic ecosystems found within a forest?
A Biodiversity will decrease.
B Dissolved oxygen levels will increase.
C Water pH will increase.
D Water temperatures will decrease.
A Biodiversity will decrease.
200
Which diagram most accurately shows the flow of energy in an environment?
A
B
C
D
D
A
200
Use the scenario to answer the question.
Which term best describes the relationship between the osprey and bald eagle in the food web?
A commensalism
B competition
C mutualism
D predation
B competition
200
The diagram shows the energy pyramid of a pond ecosystem that has 4 trophic levels (1, 2, 3, and 4).
What does the shape of the energy pyramid indicate about the flow of energy in a pond ecosystem?
A Energy flows from trophic level 1 to trophic level 4.
B Energy flows from trophic level 4 to trophic level 1.
C The energy available to each trophic level is equal.
D The energy available to trophic level 1 and 2 is less than tropic levels 3 and 4.
A Energy flows from trophic level 1 to trophic level 4.
200
The image shows a desert biome.
A student claims that both the cactus and sand are biotic factors. Is the student correct?
A No; the sand is made up of small rock fragments.
B No; 94% of the cactus is water.
C Yes; the cactus and the sand are found on the ground.
D Yes; the cactus and the sand are habitats for animals.
A No; the sand is made up of small rock fragments.
200
What is the most immediate effect of forest fires that occur seasonally across the United States?
A a decline in the population of producers
B a constant population of microorganisms
C an increase in the population of carnivores
D a fluctuation in the population of herbivores
A a decline in the population of producers
300
Study the food chain.
Which scenario would cause the greatest disruption in the transfer of energy through the food chain?
A a disease that kills off a large number of owls
B a drought that causes most grasses to die out
C fewer sunny days than in previous years
D introduction of a new animal that eats grass
B a drought that causes most grasses to die out
300
In which way are rainforests and coral reefs different from ecosystems with few species?
A There are more prey than predators.
B The food web is more stable and lasting.
C Organisms often must compete for food.
D Plant populations are the primary producers.
B The food web is more stable and lasting.
300
Why is a reduction in biodiversity due to loss of plant populations especially destructive to an ecosystem?
A Plants have the most biomass.
B Plants are resistant to disease.
C Plants are primary producers.
D Plants are part of the food web.
C Plants are primary producers.
300
In some communities, forests are cleared through burning, and the deforested land is used for farming. Which of these is a negative consequence of this practice?
A decreased plant and animal diversity
B increased availability of soil nutrients
C greater access to water for plants and animals
D less sunlight reaching the ground
A decreased plant and animal diversity
300
A student writes a summary about the abiotic and biotic factors of the tropical rainforest biome.
Which statement in the student’s summary is inaccurate?
A Most tropical rainforest biomes are located near the equator.
B High temperatures in the tropical rainforest limit the varieties of animals.
C On average, the tropical rainforest biome gets more rain than any other biome.
D Trees in the tropical rainforest have thin bark since cold winters are never a problem.
B High temperatures in the tropical rainforest limit the varieties of animals.
400
The table shows observations recorded by four students (P, Q, R, and S) while hiking in a forest ecosystem.
Which student lists abiotic factors only?
- A Student P
- B Student Q
- C Student R
- D Student S
- D Student S
400
The Arctic fox is a small fox that inhabits the Arctic tundra. It depends on animals like lemmings, voles, fish, waterfowl, and seabirds for its survival.
How do these animals help the Arctic fox survive?
A by supplying food to the fox
B by giving companionship to the fox
C by eliminating competitors
D by protecting from predators
A by supplying food to the fox
400
The diagram indicates the climate regions on Earth.
What is the correct labeling for each climate region?
- A
- B
- C
- C
400
Which of these is most likely to happen to a grassland ecosystem after a catastrophic flood?
- A Birds will compete for water.
- B Amphibious snakes will compete for space.
- C Flying insects will have to find new sources of food.
- D Ground-dwelling rodents will have to find new shelter.
- D Ground-dwelling rodents will have to find new shelter.
400
Use the population graph to answer the question that follows.
During which year did the population most likely encounter a severe drought and forest fire?
- A 1992
- B 1994
- C 1995
- D 1996
A 1992
500
Which diagram correctly shows the exchange of gases between plants and animals?
Responses
- A
- B
- C
- D
- A
500
Which example identifies organisms that display a parasitic relationship?
- A Acacia ants live in acacia trees eating a nectar secreted by the trees, and they aggressively defend the tree from animals that try to eat it.
- B Cattle egrets fly in behind cows in fields to eat insects stirred up by the cows as they walk which does not help nor harm the cows.
- C Working alone, cheetahs stealthily approach gazelles in the tall grass, then chase them at high speeds trying to catch and eat them.
- D Ticks bite humans to consume their blood for food, and ticks can also pass on illnesses such as Lyme disease to humans.
- D Ticks bite humans to consume their blood for food, and ticks can also pass on illnesses such as Lyme disease to humans.
500
When honeybees land on dandelion flowers to drink nectar, pollen sticks to their bodies. The pollen is transferred when the honeybees visit other dandelion flowers. What type of ecological relationship is demonstrated by honeybees and dandelions?
- A competition
- B commensalism
- C mutualism
- D parasitism
C mutualism
500
Which organisms use the energy from the remains of dead animals and recycle the nutrients back into the environment?
- A producers
- B herbivores
- C omnivores
- D decomposers
D decomposers
500
A food web is illustrated.
Which two organisms receive energy from the mouse?
- A elk and owl
- B snake and elk
- C owl and hawk
- D hawk and grass
C owl and hawk