HA Investigation 3 Question Preview (ID: 48985)
Adaptations.
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What is an adaptation?
a) Any trait that allows an organism to live another year.
b) Any trait that decreases an organisms rate of survival.
c) Any trait that changes an organisms appearance.
d) Any trait that increases an organisms rate of survival
What is a mutation?
a) Any random change to an organisms DNA - can be positive, negative, neutral.
b) A selected change to an organisms DNA.
c) A trait that increases an organisms chance of survival.
d) Species developing from one type into two.
What is variation in a population caused by?
a) Different families
b) Genetic mutations
c) Nothing
d) Changes to hair color
If a mutation occurs, and it helps an organism survive, what can it become?
a) An adaptation
b) A mutation
c) Natural selection
d) A random change
What is artificial selection?
a) Artificially selecting pets.
b) Selecting organisms to mate with other species.
c) Producing breeds by using organisms with the desired traits.
d) The evolution of new species.
Why are adaptations always positive?
a) They can only be reproduced once.
b) They only continue in organisms that allow them to survive and reproduce.
c) They can continue through several generations of one family only.
d) That's just how they work.
Where do adaptations come from?
a) natural selection
b) artificial selection
c) variation
d) DNA mutations
Mutations that allow organisms to ____ can become adaptations.
a) grow taller
b) survive and reproduce
c) survive a longer amount of time
d) change their appearance
Darwin observed that
a) over time, species on different islands became very similar
b) over time, species moved from different islands to one island.
c) over time, species moving to other islands produced new species.
d) the finches were always exactly the same.
Darwin noticed that finch appearance changed depending on
a) their food sources on each specific island.
b) each family generation.
c) how long they were alive.
d) nothing - finch appearance cannot change.
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