Category 5 Review

Which conclusion about the microorganisms naturally found in the body is most likely supported by these data?

• All microorganisms are harmful to the body.

• Microorganisms are important in promoting healthy immune systems.

• All bacteria in the body increase the effectiveness of the immune system.

• Bacteria that cause infections decrease the number and variety of immune cells in the body.

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B.11.A

Which role of protists has the most positive effect on maintaining the plant population in an ecosystem?

• Protists are a major food source for animals.

• Protists produce approximately 75 percent of the oxygen on Earth.

• Protists decompose dead materials, returning nutrients to the soil.

• Protists found in the gut of animals assist in digestion.

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B.11.A

This gradual change in plant communities of a sand dune ecosystem can result in ​ (a)  

• greater species diversity
• reduced energy absorption by consumers
• greater erosion rates

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B.11(B)

The natural process the biologist are attempting to imitate is ​ (a)  

• Succession
• Biomagnification
• Population bottleneck
• Species extinction

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B.11(B)

A student studying primary succession should focus on which of these communities?

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B.11(B)

Which of these explains the relationship between the leaf-cutter ants and fungi?

• Predation, because the ants feed on the fungi

• Mutualism, because both the ants and fungi benefit from each other

• Competition, because both organisms consume the same resource for energy

• Commensalism, because the ants receive energy from the fungi and the fungi are unaffected

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B.12(A)

Which table best identifies the ecological relationships among the gray wolf, hyena, and goats?

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B.12(A)

Based on the two diagrams, which list correctly identifies the relationship Glyptapanteles wasp larvae have with other organisms?

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B.12(A)

How do the wings of the Gentoo penguin and the legs of the common ostrich provide an advantage in their habitats?

• Allows them to find prey

• Allows them to escape from predators

• Allows them to control their body temperature

• Allows them to be camouflaged in their environments

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B.12(B)

In a Central Texas grassland, the producers incorporate 12,000 kJ of energy from the sun into their tissues. ​According the 10% rules, (a)   would be incorporated into the tissues of herbivores.

• 1,200 kJ
• 12,000 kJ
• 10,800 kJ
• 1,080 kJ

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B.12(C)