Biology STAAR Semester 2 Review

What characteristic will increase the fitness of an organism?

• Roaches lay more eggs than most organisms to ensure some offspring will live long enough to reproduce

• Animals grow longer fur in the summer to ensure warmth

• Animals decrease in speed as they age

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Hydrotropism is the response of plants to water. What aids plants reach water since they are unable to move?

• Leaves

• Flowers

• Root hairs

• Stamen

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What would happen if you added another animal that eats carrots? Select two.

• Rabbits would have increased competition

• Rabbit population could decrease due to less resources

• Mice would eat carrots too

• Rabbits would eat the competitor until it is extinct

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Physical similarities between two different organisms can signify...

• nothing

• a common ancestor

• they have a similar diet

• they live in the exact same environment

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Natural selection:

• the process where well-adapted organisms have a better chance of surviving and reproducing

• the process where poorly-adapted organisms have a better chance of surviving and reproducing

• the process where organisms do not change over long periods of time

• the lack of evolutionary mechanisms have taken place

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When Victor finished playing soccer one hot afternoon, he was covered in sweat. Which body systems are involved? Select two.

• Integumentary

• Endocrine

• Digestive

• Excretory

Which organisms would be the most related/similar to each other?

• Orangutans & humans

• Gorillas & Chimpanzees

• Bonobos & Orangutans

• Humans & Chimapnzees

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The vascular system of plants aids in-

• protection

• transport of food and water

• photosynthesis

• response to predators

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The kingdom Plantae is unique because-

• it is exclusively heterotrophic

• it contains no nucleus

• it is exclusively autotrophic

• it is the only kingdom to contain a nucleus

A secondary consumer is eaten by a tertiary consumer. If the secondary consumer contains 39.1 J, how much energy will go to the tertiary consumer?

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