Ohio Biology

The living world is organized in levels. Biotic and abiotic factors also can be arranged into levels of biological organization. Put the words below in order from the least complex to the most complex

• Community, Organism, Biome, Population, Biosphere, Ecosystem

• Organism, Population, Community, Ecosystem, Biome, Biosphere

• Organism, Biome, Population, Community Biosphere, Ecosystem

A population of salamanders that live in a river require clear, fresh water to survive. New housing developments have caused tons of sediment to muddy the river. Which of these most likely will happen to the salamander population?

• The salamanders go live on land.

• The salamanders will move across land to another river.

• The salamanders will quickly adapt to living in the muddy water.

• The salamanders will decrease in number because of the water quality.

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One species of Galapagos finches, the cactus finch, eats insects off cactus plants. A disease kills off most of the cacti in the Galapagos Islands. Which of these most likely would happen to the carrying capacity of the island?

• It would increase a small amount since the insect population would decrease.

• It would remain about the same since the finches would change to a different diet.

• It would decrease a lot because there is less to eat.

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A sample of bacteria was added to a culture dish containing a limited food supply. (Culture dishes are designed to help bacteria grow.) The dish was kept in an incubator for two weeks, where temperature that bacteria prefer to live in was kept constant. The graph to the right shows changes that occurred in the bacterial population over the two weeks. Which statement provides the best explanation for the population increase then decrease?

• The bacteria were unable to reproduce until day 8.

• The bacteria ate all of the available food.

• The bacteria could not grow at all in the provided temperatures.

• The bacteria could not grow at all with the provided food type.

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Which of the following best describes an ecosystem?

• A community of organisms and their abiotic environment

• A group of interacting individuals of the same species

• A collection of different species living in the same area

• A single species and its natural habitat

What does an energy pyramid show?

• The amount of energy consumed by humans

• The number of animals in an ecosystem

• The flow of energy from one trophic level to the next in an ecosystem

• The physical structure of a forest

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Which of the following best describes the flow of energy in an ecosystem?

• It flows from decomposers to producers to consumers

• It is recycled among producers only

• It flows from producers to consumers to decomposers

• It flows directly from the sun to all living organisms equally

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Which of the following is a characteristic of all living organisms?

• Ability to move

• Ability to perform photosynthesis

• Ability to reproduce

• Ability to grow

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What do we call the non-living part of the environment?

• Biotic

• Population

• Abiotic

• Antibiotic

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What do we call several different populations interacting in some way?

• Population

• Community

• Ecosystem

• Biome

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