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8th Grade Science Class Natural Selection 2021 Flashcards | StudBud
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8th Grade Science Class Natural Selection 2021
8th Grade Science Class Natural Selection 2021
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1
The process where organisms with favorable adaptations are most likely to survive are called natural selection.
False
True
2
The diagram shows a change in a population of bugs. An explanation for the change could be....
The green becames more advantageous in the environment
The green becames less advantageous in the environment
More insects decided to be brown to hide themselves
The brown become less advantageous in the environment
3
What is an inherited trait that increases an organisms chance of surviving
natural selection
adaptation
evolution
variation
4
The process of change over a period of time is called
natural selection
evolution
adaptation
5
A new fin shape mutates in fish, what might determine the the frequency of the new fin shape?
It will increase ONLY if the shape is dominant
The mutation must happen in two or more fish simultaneously
If the mutation makes fish more fit for their environment
6
The theory of natural selection
was proposed by Charles Darwin.
is like eating pizza.
was proposed by Sir Isaac Newton.
is evidence that scientists a crazy.
7
What is a cause of extinction of animals?
predators
unable to adapt to the environment
variation in the population
8
A species of fox evolved to 2 species on opposite sides of a river. This change is likely due to
plate tectonics
geographic propagation
Hunting by native people
Geographic isolation
9
If a population of rabbits from a warm climate move to a cold climate, what would happen?
Few of the rabbits would adapt to the change
Most of the rabbits would try to adapt to the change
All the rabbits would try to adapt to the change
10
What is the number one goal of an organism?
to help others do better
to learn about global warming
to become famous
to survive and reproduce
11
Adaptations are traits that help organisms survive.
True
False
12
An example of an adaptation is the giraffes long neck.
False
True
13
Adaptations can only arise if there are _______________ present in the population.
Predators
Uniform Offspring
Natural Selectors
Variations
14
Why did black moths increase in population during England's Industrial Revolution?
They had a trait better suited to survive.
They were just prettier.
They had better jobs with higher pay.
They had no predators.
15
Mice are released in a forest. The forest has many places for hiding. Which will survive?
They have an equal chance of survival.
The ones who change their color to match the surroundings.
The ones who already had darker fur
16
In a dark environment, the _______ moths were better suited to survive.
light
natural selection
dark
17
Natural Selection...
is the same as evolution.
happens over long periods of time.
happens quickly in populations.
happens only if there is a change in the environment.
18
During the Industrial Revolution, moth populations went from being mostly ____ to mostly ______.
white, black
red, blue
blue, red
black, white
19
How does camouflaging help animals survive?
it is clearer to view the environment.
it is harder for them to be seen by predators.
it sharpens their hearing.
it is better for their balance.
20
Only traits that are ________________ can be acted upon by natural selection.
Partial learned & partially inherited
Inherited
Learned
Passed down through asexual reproduction
