Bio Final Exam Review

Why is photosynthesis important for plants?

• It collects sunlight which is used to make food for plants
• It gets rid of plant waste products
• It changes plant sugar into stronger chemicals
• It helps attract insects to flowers

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The theory of evolution by natural selection means that what is changing over time?

• The inherited traits of a population.
• The acquired traits of a population.
• Hair color and eye color
• Attractive features.

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Where do adaptations come from?

• The individual organism decides to adapt
• Mutations that give an organism an advantage in its environment

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Which best describes the role of mutations in natural selection?

• Mutations help an organism to better survive in their environment
• An organism may acquire a helpful mutation by interacting with the environment
• A mutation may result in an adaptive trait that makes an organism more likely to survive and reproduce
• Organisms with certain traits are more likely to win competitions for mutations

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Mutations are important because they bring about

• death of the organism in which they develop
• genetic variation needed for a population to evolve
• benefits for the individual, not for the population
• Hardey-Weinberg equilibrium within a population

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Do organisms "decide" to evolve and change?

• Yes, they know they need to change to survive 
• No, they change because of natural selection

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Which of the following is NOT a characteristic that all living things share?

• using energy
• a cellular organization
• response to surroundings
• movement

In the given scenario what will happen to the organism: salt is poured onto eggplant.

• Water will move out of the eggplant cells and the cells will shrink.
• Water will move out of the eggplant cells and the cells will swell.
• Water will move into the eggplant cells and the cells will swell.

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A desert lake has evaporated to half its original size over the past 50 years. This caused a large increase in the lake's salt concentration. Over these 50 years, scientists have observed a decrease in the population of one fish species and an increase in the population of a shrimp species. Which hypothesis about the organisms ability to live with the salt concentration does the evidence suport

• The fish are better able to live in areas of high salt concentration
• Neither the shrimp nor the fish are able to live in areas of high salt concentration
• Both the shrimp and the fish are equally able to live in areas of high salt concentration
• The shrimp are better able to live in areas of high salt concentration

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A park is home to a large number of robins, squirrels and rabbits. The robins and squirrels live in the park's trees. The robins feed on earthworms and insects that live on the ground. The squirrels eat the acorns produced by the park's oak trees. The rabbits hide in the bushed and feed on the grass. Which factor would directly limit the number of rabbits that could live in this park.

• Number of acorns
• Number of squirrels
• Number of bushes
• Number of robins

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