Biodiversity Quiz

If a disease destroying barley plants in a field swept through an ecosystem, what would happen to the barley eating bird population in the the field ?

• The bird population would stay the same
• The bird population would infinitely increase
• The bird population would decrease

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A scientist was studying a population of fish in a pond over a period of 10 years. He observed that the population increased each year for 3 years, and then remained nearly constant for the rest of the study. The best explanation for this observation is that the population had

• stopped reproducing

• reached carrying capacity

• mutated into a different species

• run out of food and all died

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Which statement best describes the term limiting factors?

• All the biotic and abiotic factors and the interactions among them in a given area

• A finite resource organisms in an ecosystem require

• The biotic and abiotic factors in an ecosystem

• The maximum number of organisms an ecosystem can support

In a forest ecosystem, which of the following is NOT an example of a limiting factor that would greatly affect a rabbit population?

• a rainy season

• a disease that causes rabbits to die

• grass available to eat

• the population of hawks that eat rabbits

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The picture to the right represents a sunny, dry desert.

Which factor most likely limits the desert’s carrying

capacity for plant life?

• the number of animals that eat plants

• the amount of sunlight

• the availability of space to grow

• the availability of water

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On which day did the population represented in the graph below reach the carrying capacity of the ecosystem?

• Day 11

• Day 8

• Day 3

• Day 5

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If the amount of food or resources available increases, the carrying capacity for an animal:

• Stays the same
• Increases
• Decreases
• Fluctuates

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