Ecology Exam

I certify that I am not cheating on this exam. I am aware that academic dishonesty will result in a 0 with no opportunity to make up the points.

• I agree

• I disagree

Use the food pyramid above to answer the question.
If birds eat insects that feed on vegetables, which level of the pyramid would birds occupy?

• D

• C

• A

• B

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Use the food pyramid above to answer the question.
How does the number of top level consumers compare with the number of producers?

*hint, be sure to read all answer choices and that all parts of the answer are correct

• There are more producers than top level consumers because there is more energy readily available for these producers.

• There are more top level consumers than producers because there is more food readily available for these consumers.

• Although there is less food available, there are more top level consumers than producers because they don’t have any predators.

• Although there is less food available, there are more producers than consumers because they don’t have any predators.

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What do the arrows show?

• They show the direction that sunlight is moving.

• They point away from the organisms doing the consuming.

• They point in the direction energy is moving.

• They point toward the organism being eaten.

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Which of the following is a tertiary consumer from the food web above?

• birds

• foxes

• rabbits

• mice

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Which of the following is an autotroph from the food web above?

• birds

• grasses

• grasshoppers

• mice

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What might happen if the birds were removed from the food web above?

• The rabbits would increase.

• The grasshoppers would decrease.

• The hawks would increase.

• The shrubs would decrease.

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If there is 8,000 kcal (calories) of energy available at the producer level, about how much energy would be available for the Sheephead fish?
*consider doing a few calculations and pay attention to what level each of the organisms identified above is on.

• 1. 800 kcal

• 1. 8,000 kcal

• 1. 8 kcal

• 1. 80 kcal

• 80,000 kcal

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According to this graph of the population growth of fur seals, in what year did the population first reach its carrying capacity?
Hint: First, look for the carrying capacity on the graph, next look at the year it first started

• 1925

• 1945

• 1935

• 1930

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If an ecosystem has a carrying capacity of 1,000 individuals for a given species, and 2,000 individuals of that species are present, we can predict that the population

(a)   ​ ​

• size will quickly decrease.
• will change unpredictably.
• size will slowly increase.
• size will remain at equilibrium.

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