Unit 5 - Natural Selection
Unit 6- Food Webs
Unit 7- Biomes/biodiversity
Unit 8- Weathering,
Unit 9- Space
100
Where the better adapted organisms survive to pass traits along to offspring.
A.Evolution
B. Natural Selection
C. Extinction
D. Artificial Selection
Where the better adapted organisms survive to pass traits along to offspring.
B. Natural Selection
100
When energy is passing through a food web, some of the energy is lost as heat. Approximately how much of the energy is passed from one level to the next?
A 1%
B 10%
C 50%
D 90%
B 10%
100
Which of the following situations contributes to the sustainability (health) of an ecosystem?
A Decrease in biodiversity
B Extinction of a population from the ecosystem
C Removal of many populations of organisms
D Increase in biodiversity
D Increase in biodiversity
Higher biodiversity = Higher sustainability!
100
The process of rock being broken into smaller rock either physically or chemically is called_____.
A. Weathering
B. Erosion
C. Deposition
A. Weathering
100
Which of the following is NOT a function of a space suit?
A. Creating pressure for astronaut
B. Giving astronaut oxygen
C. Protecting astronaut from tardigrades
D. Protecting the astronaut from UV radiation
Which of the following is NOT a function of a space suit?
C. Protecting astronaut from tardigrades
200
Some moths have a brown body and brown wings, while other moths have a white body and white wings. The brown moths often rest on the bark of pine trees, and the white moths rest on the white bark of aspen trees.If all the aspen trees in an area were cut down, what would be the likely result?
A. More brown moths will survive than white moths because predators will be able to spot the white moths more easily. Over time, there will be no white moths in the area.
B. The white moths will grow brown wings in order to blend in with the environment. Over time, there will be no white moths in the area.
C. The white moths will migrate to a new area where aspen trees are found. The brown moths will remain in the original area. The number of brown moths will increase.
D. The white moths will rest on the remaining trees. Over time, they will become brown moths, so the number of moths will increase.
Some moths have a brown body and brown wings, while other moths have a white body and white wings. The brown moths often rest on the bark of pine trees, and the white moths rest on the white bark of aspen trees.If all the aspen trees in an area were cut down, what would be the likely result?
A. More brown moths will survive than white moths because predators will be able to spot the white moths more easily. Over time, there will be no white moths in the area.
200
What do the arrows represent in the diagram of a food chain?
A The order of size of organisms in the ecosystem
B The importance of organisms in the chain
C The direction of energy flow through organisms
D The energy increases as you move from left to right
C The direction of energy flow through organisms
200
A species of mouse spends the day sleeping in its burrow to avoid high daytime temperatures. It is processing what little water it needs from the seeds it collects. To which environment is this mouse BEST adapted?
A rainforest
B marine
C desert
D tundra
C desert
200
A delta at the mouth of a river is the direct result of
A. runoff from sewage.
B. deposition of sediment.
C. an ancient glacier that passed through.
D. an underground river flowing to the ocean.
A delta at the mouth of a river is the direct result of
B. deposition of sediment.
200
Organisms can live on Earth because of Earth’s location in the solar system. How does Earth’s distance from the Sun most affect Earth’s water and enable life to exist?
A.It allows for liquid water.
B.It allows water to freeze.
C.It changes water’s specific gravity.
D.It allows water to be salty or fresh.
Organisms can live on Earth because of Earth’s location in the solar system. How does Earth’s distance from the Sun most affect Earth’s water and enable life to exist?
A.It allows for liquid water.
300
Rabbits in most areas have a brown coat. The arctic hare has a bright white coat in winter. How does the arctic hare's white color help it survive?
A) it helps the hare blend into its surroundings
B) it makes the hare warmer during the summer
C) it makes the hare appear larger to predators
D) it helps the hare stay warm during the winter.
A) it helps the hare blend into its surroundings
300
Which organisms make energy available to all other organisms in a food chain?
A producers
B decomposers
C consumers
D scavengers
A producers
300
Deer are introduced into a grassland ecosystem and their population increases considerably. If the deer population continues to grow, which is the MOST likely outcome for the ecosystem?
A. Biodiversity would increase, and sustainability would decrease.
B. Biodiversity would decrease, and sustainability would increase.
C. Biodiversity would increase, and sustainability would increase.
D. Biodiversity would decrease, and sustainability would decrease.
Deer are introduced into a grassland ecosystem and their population increases considerably. If the deer population continues to grow, which is the MOST likely outcome for the ecosystem?
D. Biodiversity would decrease, and sustainability would decrease.
300
Two processes are involved in the formation of a sand dune. Which two processes BEST describe how a sand dune forms?
A.wind erosion and deposition
B. plate movement then deposition
C. wind erosion then water erosion
D. water erosion then plate movement
Two processes are involved in the formation of a sand dune. Which two processes BEST describe how a sand dune forms?
A.wind erosion and deposition
300
Which planet would be the most likely place to observe for life?
A.A
B.B
C.C
D.D
Which planet would be the most likely place to observe for life?
C. Planet C
400
Some dairy farmers want their cows to produce greater amounts of milk than average cows. Which process will help the dairy farmers develop cows with this trait?
A selective breeding
B behavioral modification
C ecological succession
D geographical isolation
A selective breeding
400
Which sentence best describes how energy flows through this pyramid?
A.Energy is transferred down each level of the energy pyramid.
B.The energy lost at each level is consumed by organisms in the top level.
C.Energy is transferred from organisms in one level to those in the level above.
D.The organisms at the bottom level provide energy directly to organisms in all the other levels.
C.Energy is transferred from organisms in one level to those in the level above.
400
Tropical rain forests have the greatest biodiversity of any type of land ecosystem. How does biodiversity contribute to the sustainability of an ecosystem?
A. The presence of more species with different adaptations makes it more likely that some organisms will survive a disaster.
B. Greater genetic variation within species makes it more likely that some individuals will survive a disease outbreak.
C. The presence of a variety of herbivore species that can feed on a large number of different producer species helps ensure abundant prey for predators in the ecosystem.
D. All of the above
Tropical rain forests have the greatest biodiversity of any type of land ecosystem. How does biodiversity contribute to the sustainability of an ecosystem?
D. All of the above
400
Most of the damage done by hurricanes is caused by...
A.storm surges that flood coastal areas
B.lightning from thunderstorms
C.trees falling due to high winds
D.windows blowing out of buildings
Most of the damage done by hurricanes is caused by...
A.storm surges that flood coastal areas
400
Why is some food dehydrated for astronauts to eat in space?
A.to make the food less messy to eat
B.to preserve the food for extended flights
C.to increase the food's nutritional content
D.to keep the food from floating off the plate
Why is some food dehydrated for astronauts to eat in space?
B.to preserve the food for extended flights
500
Which of the following best explains the differences in traits between the finches?
A. The finches originated from different types of birds that each arrived at the islands at different times.
B.Some finches stretched their beaks out to crack hard seed, and the trait was passed on to their offspring.
C.The finches are exposed to different temperatures throughout the year causing variation depending on the season.
D. The process of natural selection caused differences to show due to differences in available food.
D. The process of natural selection caused differences to show due to differences in available food.
500
Why does an energy pyramid start larger at the bottom with producers and get smaller at the top with tertiary consumers?
Producers contain the most useable energy and are shown to have the largest layer. As you go up the pyramid less and less energy is passed on (10%). The energy is lost as waste or heat energy.
500
Why is biodiversity important for a sustainable ecosystem?
Biodiversity allows for a large food chain that gives variety of food choices for all organisms. If something happens to one organism, another organism can take its place and the ecosystem can remain stable. A low biodiverse system has few plants and animals which makes the ecosystem weak and unstable.
500
Give examples of 2 types of physical weathering and 2 types of chemical weathering.
Physical weathering:
-Ice wedging, animal burrowing, abrasion (Sand hitting rock), plant roots,
Chemical weathering:
-Acid rain, lichens breaking down rock, rust,
500
Scientists noted that muscles and bones would need physical stress to remain healthy during manned space flights. Which of these had to be planned for because of this need?
A.practicing space walking
B.counseling activities for tension
C.exercising to maintain strength
D.monitoring circadian rhythms
Scientists noted that muscles and bones would need physical stress to remain healthy during manned space flights. Which of these had to be planned for because of this need?
C. Exercising to maintain strength