Nat. Selection, Adaptations, & Selective Breeding

1.  Darwin observed 13 species of finches on the Galapagos Islands.  What did Darwin conclude about the finches?

• a.  They evolved from a common ancestor.
• They all came from different continents.
• they evolved from 13 different types of birds.
• they developed from other types of organisms.

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1.  Which statement best describes the process of evolution?

• Populations can survive in different locations.
• Populations grow when resources are plentiful
• Conditions limit the number of species on earth.
• The characteristics of a species can change over time.

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1.  Modern horses developed their traits through natural selection.  What occurs during the process of natural selection?

• only the fittest organisms survive and reproduce
• organisms choose mates from other species
• breeders cross organisms with desirable traits.
• organisms remain exactly the same over many generations.

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Hollow, light weight bones is an adaptation that...

• is an internal structure that helps birds fly

• is an external structure that helps birds fly

• disables birds ability to fly

• helps birds walk

Adaptation is

• the process that makes an organism look better

• the process in which weak organisms are killed off

• the process in which an organism becomes better adapted to its environment

• the process in which oxygen is transformed into glucose

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The purpose of gills on a fish is to

• Take in nitrogen from the water

• Help fish avoid predators

• Take in hydrogen from the water

• Take in oxygen from the water

The squirrel in the picture is using an adaptation called

• camouflage

• hibernation

• migration

• retention

An example of stuctural/physical adaptation is...

• blood type

• bioluminescence

• camouflage

• migration

In selective breeding humans select the most desirable traits

• True

• False

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Breeding two cows to produce more milk and meat is natural selection

• true

• false

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