Living Earth Unit 1 Post Test Review

Consider the following scenario:  (Penguin J) has an injured flipper and lives in a group of penguins of the same species as (Penguin K). Penguin K is a non-injured Penguin.  How would the survival of these two penguins be different?

• They wouldn't have different survival
• Penguin J would have increased survival as it can more easily stay with the group.
• Penguin J would have decreased survival because it would have less ability to swim and would have a harder time keeping up with the group.
• Penguin K would have decreased survival because it would have less ability to swim and would have a harder time keeping up with the group.

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What is a population?

• Each step in a food chain, food web, or on a biomass pyramid.
• Simplified model that shows an energy flow through an ecosystem.
• A community of organisms and their abiotic environment.
• A group of individuals that belong to the same species and can interbreed and live in the same area.

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What is biodiversity?

• The total amount of living tissue in a trophic level.
• The different types of creatures (species) in an ecosystem.
• A group of similar organisms that can breed and produce fertile offspring.
• The ability of multiple species to function in a landscape.

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An area of very high biodiversity would be a_____________________

• coral reef in the ocean
• desert
• forest
• open ocean

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What does "abundance" of an organism mean?
The ____________________of the organism(s).

• weight (biomass)
• size (length)
• number(s) (how many)

In what year did the three mammal populations fully recover from the volcanic eruption?

• 1984
• 1985
• 1986
• 1987

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Between 1980 and 1990 the bobcat population increased dramatically in the area to a population 10 times its previous size.  What type of relationship occurred between bobcats and the other three species?

• Bobcats are predators and the others are prey.
• In the year 1988, the bobcats probably had their greatest increase since the prey dropped the most.
• In the year 1982, the Bobcats had the greatest increase since the prey had the greatest decline.
• Rabbits were the most affected.

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Scientists collected data on a type of duckling found in the area affected by the volcanic eruption. They found that the duckling had reduced reproductive success and survival.  What does reduced reproductive success and survival mean?

• Less offspring survive and the duckling dies.
• Producing less offspring as a group and the duckling is less likely to survive.
• The duckling is less likely to have offspring and less likely to live.
• The duckling is more likely to have offspring and more likely to live.

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Using the graph, what change most likely caused the population trend shown?

• increased carnivores
• increased herbivores
• Increased rainfall
• increased decomposers

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Compare the shape of the trend line between years 1-2 and years 2-4.

• Years 1-2) The trend line was sloped slightly down and in (years 2-4) it was sloped steeply upwards.
• Years 1-2) The trend line was sloped slightly up and in (years 2-4) it was sloped steeply downwards.
• Years 1-2) The trend line was sloped sharply down and in (years 2-4) it was sloped steeply down.
• Years 1-2) The trend line was sloped slightly up and in (years 2-4) it was sloped steeply upwards.