Biology Chapter 15 Exam

T or F: Mimicry occurs when two or more species adapt to resemble each other.

• True

• False

A human appendix is an example of what?

• An ancestral trait

• Homologous structure

• Vestigial structure

• Analogous structure

Natural selection can best be defined as the _____.

• survival of the biggest and strongest in a population

• survival and reproduction of those in the largest area

• elimination of the smallest organism by the biggest

• survival and reproduction of those that are best adapted (survival of the fittest)

How would you describe this evolution?

• Homologous structure
• Analogous structure
• Structural adaption
• Functional adaption

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what are vestigial organs

• organs that have reduced in size and the role its used for.

• very useful organs that are needed for life

What type of natural selection is this?

• Disruptive Selection
• Directional Selection
• Stabilizing Selection
• Sexy Selection

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Two organisms that are closely related would have

• very similar DNA sequence

• exactly the same DNA sequences

• no proteins in common

• completely different DNA sequence

An organism's ability to survive and reproduce in its environment refers to its

• Fitness
• Variation
• Selection
• Mutation

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What type of selection is depicted in the picture? 

• stabilizing 
• directional 
• disruptive 
• the answer is not here

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What is the correct explanation for what is happening in this graph?

• There are a lot of average-sized beaks

• There are no beaks

• There are a lot of small beaks only

• There are a lot of small and large beaks, but not average-sized ones