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- 1. Multiple Choice
The list below are some ways that plants have adapted to survive in a desert biome. Which statements describe adaptations to biotic factors in a plant’s desert biome?
1.flowers open at night for pollination by bats
2.Spines protect plants from consumers
3.Needles lose less water that broad leaves in high temps
4.Wide root structures help plants soak up water in rare rainstorms
Statement 1 & Statement 2
Statement 1 & Statement 3
Statement 2 & Statement 4
Statement 3 & Statement 4
- 2. Multiple Choice
How could the introduction of a nonnative species of plant affect an ecosystem in North Carolina?
It could pollinate the native plant species, producing a disease-resistant species.
It could reduce the competition for space and light with native plant species.
It could take over the habitats of the native plant species.
It could cause some insect species to destroy native plant species.
- 3. Multiple Choice
A lemming population lives in a cold, mountainous region. Over time, the climate in the region becomes drier and warmer. The lemming population would be MOST likely to adapt and remain in the area under these new climate conditions if individuals in the population had alleles (genetic DNA) for which of the following traits?
sharp teeth
small ears
large size
short fur
- 4. Multiple Choice
Why is it important to conserve the biodiversity of Earth?
to decrease the amount of global predator populations
to decrease the stability of major global ocean currents
to increase the stability of ecosystems during environmental changes
to increase the amount of nonrenewable resources located in the lithosphere
- 5. Multiple Choice
Biologists have discovered that the beluga whales of Canada’s St. Lawrence River have the highest rates of cancer among animals. What is MOST likely the reason for this high incidence of cancer in these whales?
chemical and pollutant runoff into the ocean
average temperatures increased in the region
depletion of natural prey from the ecosystem
increased levels of carbon dioxide in the atmosphere
- 6. Multiple Choice
Biomes include both biotic and abiotic elements. Which set includes BOTH biotic and abiotic elements of an estuary?
cordgrass, water salinity, great blue herons
ospreys, oysters, black needle rush
silt, air temperature, tidal pattern
periwinkles, bats, egrets
- 7. Multiple Choice
Which of these is a threat to the survival of an ecosystem?
predator-prey population cycles
less biomass at higher levels of the food web
a shrinking variety of animal and plant species
competition among some consumer populations
- 8. Multiple Choice
Which of the following is an activity that does NOT take place in the biosphere?
orchid pollen traveling to an island on wind currents
aerobic bacteria breaking down dead plant material
ocean waves wearing down a rocky shoreline
West Nile virus being carried by mosquitoes
- 9. Multiple Choice
Which is a biotic factor that could affect an ecosystem?
dust storms moving through an ecosystem
bacteria harming the health of organisms in an ecosystem
large amounts of acid rain precipitation seeping into the soil in an ecosystem
high levels of carbon dioxide entering the atmosphere within an ecosystem
- 10. Multiple Choice
Why is it difficult to create a terrarium ecosystem that will last a long time without human help?
Terrarium ecosystems cannot get enough sunlight.
Terrarium ecosystems cannot get enough oxygen
Ecosystems with few species are weak and unstable.
All ecosystems require thoughtful human management.
- 11. Multiple Choice
Nonnative flathead catfish that prey on smaller fish were accidentally introduced into the Yadkin River in North Carolina. What is the MOST likely effect these catfish could have on the ecology of the Yadkin River?
They could increase pollution in the water.
They could damage streambeds and shoreline.
They could decrease water flow in the river.
They could reduce native fish populations.
- 12. Multiple Choice
Sweet potatoes grow best in sandy, well-drained soil. In which North Carolina ecological region would you MOST likely grow sweet potatoes?
Piedmont (Raleigh/Durham/Chapel Hill)
Tidewater (actually in the water area where the high tide and low tide occur)
Coastal Plain
Mountains
- 13. Multiple Choice
The African savanna is a tropical grassland that supports grazing animals, such as antelopes and zebra. Predators, such as lions, hunt the grazing animals of the savanna. Small mammals, such as shrews and mice, burrow in soil beneath the grasses. Acacia trees often take root in the savanna. These trees are usually knocked down and eaten by elephants. Which of the following is likely to cause the greatest change in the vegetation of the savanna?
an increase in the lion population
a decrease in the elephant population
an increase in the shrew population
a decrease in the antelope population
- 14. Multiple Choice
The food web below shows the feeding relationships among some of the organisms that live in Lake Ontario. If the population of walleye in Lake Ontario decreased due to disease, which of these populations would also be MOST likely to decrease?
diatoms
slimy sculpin
mollusks
american eel
- 15. Multiple Choice
Leafcutter ants live in South and Central American tropical rainforests. Leafcutter ants tend fungus gardens within their colony to feed to their larvae. The ants keep the fungus alive by feeding it fresh plant material. How does a leafcutter ant colony help to support the tropical rainforest biome?
The colony recycles nutrients back to the soil for plants to use.
The colony removes dead leaves from trees and other plants.
The colony clears the forest floor of living plant material
The colony removes fungi from trees and the forest floor.
- 16. Multiple Choice
Biodiversity can include genetic diversity within a population or variation of populations within an ecosystem. Given this information, which of the following is likely to have the MOST biodiversity?
A tropical rainforest
An arctic tundra
A deciduous forest
A residential backyard
- 17. Multiple Choice
A plant is...
an autotroph
a heterotroph
a primary consumer
a carnivore
- 18. Multiple Choice
A person who eats a chicken that ate grain is a ...
primary producer
primary consumer
secondary consumer
quaternary consumer
- 19. Multiple Choice
A cow is...
a primary consumer
a heterotroph
an herbivore
all are correct
- 20. Multiple Choice
Autotrophs...
make their own food
are the base of the food chain
are primary producers
all are correct
- 21. Multiple Choice
A bear, that eats a fish, that ate bugs, that ate algae is a...
primary producer
secondary consumer
primary consumer
tertiary consumer
- 22. Multiple Choice
A heterotroph...
is an autotroph
eats other organisms
is a primary producer
is an autotroph & a primary producer
- 23. Multiple Choice
If a person eats a vegetable the person is acting as a...
primary producer
primary consumer
secondary consumer
tertiary consumer
- 24. Multiple Choice
If a person eats a salmon (that ate smaller fish, that ate algae) the person is acting as a...
primary producer
primary consumer
secondary consumer
tertiary consumer
- 25. Multiple Choice
What is the 1st trophic level of a food chain?
primary producer
primary consumer
secondary consumer
tertiary consumer
- 26. Multiple Choice
The food chain starts with....
the sun
primary producers
primary consumers
decomposers
- 27. Multiple Choice
How does human population growth affect the biosphere?
Deforestation lowers the biodiversity of an area
fossil fuels release excess carbon dioxide into the atmosphere
animal agriculture releases excess methane into the atmosphere
all are correct
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