Population and Ecosystems Unit Test
1. Three bird species share a habitat. Bird A eats insects and plant seeds. Bird B drinks flower nectar. Bird C eats plant seeds. A drought occurs in their habitat, and that season’s plants are wiped out entirely. What is the likely outcome for each type of bird?
Bird A survives; both birds B and C die. Bird A survives; either bird B or bird C dies, and the other survives. Bird B survives; either bird A or bird C dies, and the other survives
2. An increase in which of the following could increase the long-billed curlew population?(1 point)
3. Long-billed curlews eat many different kinds of insects, including grasshoppers, as a source of food. It has been shown that pesticide use kills many of these insects. How would you expect an increase in pesticide use to affect to the population of long-billed curlews in the same area?(1 point)
It would stay the same. It would not be affected It would increase. It would decrease.
4. How might bird populations on mountainsides respond to a warming climate?(1 point)
. The range shifts downhill over generations. There is not likely to be an effect based on a warming climate. The range shifts uphill over generations. Their eggs will hatch later
5. What happened to North American coastal waters when the great white shark population decreased?(1 point)
the scallop population increased. The clam population increased. The oyster population increased. The ray population increased.
6. Which organism is most responsible for the decrease in the great white shark population?(1 point)
scallops humans oysters rays
7. Climate change is primarily driven by(1 point)
deforestation mining fossil fuel burning photosynthesis.
8. Hunting can be used to combat(1 point)
deforestation. invasive species. invasive species. pollution. pollution. climate change.
9. Fertilizer from agriculture flows into the ocean. What organism may directly benefit from this runoff?(1 point)
algae dolphins oysters fish
10. Emperor penguins breed on shelves of sea ice in the winter. By spring, the chicks have developed waterproof plumage and are ready to swim in the cold ocean waters. What effect might a warming climate have on the penguins? (1 point)
The sea ice melts before the chicks are ready to swim. The sea ice melts before the chicks are ready to swim. The chicks grow faster because of the warming temperature. The chicks grow faster because of the warming temperature. The sea ice freezes earlier in the winter, shifting the breeding schedule. The sea ice freezes earlier in the winter, shifting the breeding schedule. The sea ice melts later in the season, and the penguins have to travel farther to find food.
11.Which statement provides the best evidence to support the claim that Burmese pythons have an impact on the environment? (1 point)
A. Burmese pythons thrived in the Everglades ecosystem.
B. Burmese python numbers increased, and mammal populations decreased.
C. Burmese pythons have no natural predators in the Everglades.
D. Burmese pythons were first introduced to Florida as pets.
12. In three to five sentences explain how resource scarcity, competition, and the survival of organisms are connected.(4 points)
13. Your teacher asks you to write a paper that supports a claim with evidence. In three to five sentences, describe one claim you would like to make and discuss different forms of evidence you can collect to support your claim. Where would you look for this evidence?(4 points)
1. Bird A survives; both birds B and C die. This is because Bird A has a varied diet and can still find food sources even when one type is scarce. Bird B and Bird C have more specialized diets and are unable to find alternative food sources.
2. An increase in grasshopper populations could increase the long-billed curlew population, as grasshoppers are a food source for the curlews.
3. An increase in pesticide use would likely decrease the population of long-billed curlews, as it would kill off many of their insect food sources.
4. Bird populations on mountainsides may respond to a warming climate by shifting their ranges uphill over generations to find more suitable temperatures.
5. When the great white shark population decreased, the populations of rays in North American coastal waters increased.
6. Humans are most responsible for the decrease in the great white shark population.
7. Climate change is primarily driven by fossil fuel burning.
8. Hunting can be used to combat invasive species.
9. Algae may directly benefit from fertilizer runoff from agriculture in the ocean.
10. A warming climate might have the effect of the sea ice melting earlier in the winter, shifting the breeding schedule of Emperor penguins.
11. The best evidence to support the claim that Burmese pythons have an impact on the environment is that Burmese python numbers increased, and mammal populations decreased in the Everglades.
12. Resource scarcity can lead to competition among organisms for limited resources. This competition for resources can ultimately determine which organisms are able to survive and reproduce in a given environment. Organisms that are better adapted to competing for scarce resources are more likely to survive and pass on their genes to the next generation.
13. One claim that I would like to make is that climate change is impacting bird migration patterns. I could collect evidence such as data on changes in bird migration routes, nesting times, and wintering locations. I could also look for research studies documenting the effects of temperature changes on bird behavior. Additionally, I could gather information from birdwatching organizations and environmental groups that have been monitoring changes in bird populations.