Biology Category 4 Review Quiz

Which of the following best describes commensalism?

• Both species benefit

• One species benefits, the other is harmed

• One species benefits, the other is unaffected

• Both species are harmed

A clownfish living in a sea anemone while gaining protection is an example of:

• Mutualism

• Parasitism

• Commensalism

• Competition

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Which relationship is parasitic?

• Bees pollinating flowers

• A tapeworm inside a dog

• Birds cleaning a crocodile's teeth

• Two lions hunting the same zebra

Predation differs from parasitism because:

• Predators kill their prey immediately, while parasites usually do not

• Parasites provide energy to their host

• Predators are smaller than parasites

• Parasitism involves competition for resources

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Which of the following is an example of competition?

• Wolves hunting elk

• Plants in a forest fighting for sunlight

• A barnacle attached to a whale

• Birds eating ticks off a cow

According to the 10% rule, if a producer has 20,000 kcal of energy, approximately how much energy is available to secondary consumers?

• 20 kcal

• 200 kcal

• 2,000 kcal

• 2000 J

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If the grasshopper were to be removed completely from the food web, what organism would be most effected?

• The squirrel
• The shrew
• The deer
• The rabbit

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Why is only about 10% of energy passed to the next trophic level?

• Energy is destroyed

• Energy is recycled

• Most energy is lost as heat and used for life processes

• Energy is stored permanently in biomass

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Biomass is best defined as:

• Total mass of living organisms in a given area

• Energy transferred between trophic levels

• The weight of producers only

• The heat energy in an ecosystem

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Which level in an energy pyramid contains the most biomass?

• Producers

• Primary consumers

• Secondary consumers

• Tertiary consumers

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