Unit 4 Bio - Natural Selection & Keystone Species

What is Natural Selection?

• The process of an organism passing on their most ridiculous traits to their offspring.

• The process of an organism passing on their worst traits to their offspring.

• The process of an organism passing on their best traits to their offspring.

• The process of an organism passing on their strangest traits to their offspring.

What are the two types of adaptation?

• Structural and Fragmental

• Structural and Behavioral

• Adaptive and Adaptation

• Behavioral and Fragmental

If there are too many locusts within a population, the ecosystem will not be able to support them. The locusts reproduce faster than the ecosystem can support. What is this called?

• Natural Selection

• Structural Adaptation

• Behavioral Adaptation

• Overpopulation

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Match the following

• Too many species to be supported.

• Structural Adaptation

• Giving offspring the best traits.

• Overpopulation

• The skeleton or body of a species change

• Behavioral Adaptation

• The way an animal acts changes

• Keystone Species

• Organism responsible for its ecosystem

• Natural Selection

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How do the adaptations help them survive in their environments?

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How do the bunnies adaptations help them survive in their environment?

Use:

I think

adaptation

snow

camouflage

survive

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The two types of adaptations are __________ and behavioral.

Which of the following is an example of structural adaptation?

• A fish learning to swim in a school.

• A chimp learning to use rocks as tools.

• A polar bear's thick fur

• A human choosing to wear a coat in the cold

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How do environmental pressures influence evolution?

• They have no effect on evolution

• They cause organisms to move to new environments

• They select for organisms that are better adapted to survive and reproduce

• They decrease genetic variation within a species

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What is the term for a feature that allows an organism to survive better in its environment?

• variation
• adaptation
• homologous structure
• vestigial structure

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