Review CT-2 Biology Grade 7

A community comprising all the biotic and abiotic factors in an area and all the interactions among them

• ecosystem

• population

• species

• Environmental interaction

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As you go up the levels of the energy pyramid, which of the following is true?

• There are more organisms and more energy

• There are more organisms and less energy

• There are less organisms and more energy

• There are less organisms and less energy

______________ show(s) how energy and nutrients are transferred from one organism to another in an ecosystem.

• Food Webs
• Food Chains
• Photosynthesis
• Cycles

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Consumers that eat other animals are called _____________.

• Herbivores
• Producers
• Carnivores
• Scavengers

If a producer is removed from a food chain, then the populations of other organisms will ______________ . 

• Stay the same
• Increase
• Decrease

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An animal that is hunted and eaten for food is a ______________.

• predator

• prey

• community

• population

Which of the following is a primary consumer?

• Cricket

• Frog

• Hawk

• Shrew

The shrew provides energy for the __________?

• cricket

• grasshopper

• frog

• snake

Which of the following would be the most likely effect, if there were a sudden increase in the cricket population?

• There would be a decrease in the small bird population.

• There would be a decrease in the grass/flowers population.

• There would be a decrease in the mice population.

• There would be an increase in the grass/flowers population.

Biologists observe and record the deer population. They notice that the population is four times the larger than the habitat can support. Which is least likely to occur from the overpopulation of deer?

• The grass population in the deer's habitat will begin to decrease.

• The deer population will be stronger and healthier.

• The area's water source will be reduced or depleted.

• The deer will spread disease to other animals and humans.