Unit 1 populaitons quiz

A population of deer in near its carrying capacity. If the population keeps increasing, what would most likely happen?

• The deer would have more food available

• The number of predators in the area would decrease

• The deer would have an increase in competition for resources

• The deer would go extinct the next day

A flood destroyed a near by ecosystem where rabbits eat their carrots. The rabbits carrying capacity was dependent on that food source. The flood destroyed 75% of the carrots in the area. What percent will the carrying capacity change to?

• 75%

• 50%

• 25%

• 0%

Which of the following is likely to support the data shown in the graph?

• The population started to rise in 1925 due to more resources for the deer.

• The population began to decrease after 1924 due to lack of resources.

• From 1905 to 1939 the deer population was stable.

• Wolves managed the deer population from 1910 to 1924.

Which change in an ecosystem will likely increase the carrying capacity of foxes in a forest?

• The number of predators in the ecosystem increases

• The number of prey in the ecosystem descreases

• An increase supply of food in the ecosystem

• A virus spreading throughout the population

Which of the following is a way that scientist measure populations in an ecosystem?

• They go and count every single form of like they see

• They use a quadrat in a variety of locations to get an estimate

• They use a computer simulation to find the exact amount

• They use a quadrat in a single location and determine the entire size

Which of the following is not a density dependent factor?

• A storm flooding a population

• The number of predators hunting prey

• A disease spreading throughout a population

• An increase in competition for resources

Which of the following is an example of primary succession?

• A glacier melting and exposing new ground for the first time ever

• A forest fire destroying an entire forsest causing it to grow again

• A flood destroying a field causing it to have to regrow

• A hurricane destroyes a once thriving beach ecosystem

Reorder the following from smallest (most specific) level to the largest (most broad) level.

• Community

• Ecosystem

• Biosphere

• Organism

• Population

An exponential growth means that the rate of population is _______?

• Decreasing

• Stabalized

• Destroyed

• Increasing

What would likely happen as a long term effect to the rabbit population if the wolves were removed from the ecosystem?

• The rabbits would go way past carrying capacity but still be ok

• The rabbits would begin to compete for their resources

• The rabbits would all go extinct immediately

• The rabbits population would continue to grow due to no more wolves