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Evaluate 7.13D Natural Selection and Artificial Selection
Authored by Mark Palmer
Science
6th - 8th Grade
NGSS covered
Used 2+ times
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21 questions
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1.
DROPDOWN QUESTION
2 mins • 1 pt
Evolution is the change in the inherited traits of (a) over time. The distribution of traits in a population (b) over time. (c) selection is a process by which a population’s environment determines which traits are beneficial and which are not. (d) selection is a process by which humans modify a species by breeding it for certain traits. Natural and artificial selection act on the variation of traits that is (e) in a population and both result in a change in the distribution of those traits.
Answer explanation
Evolution is the change in the inherited traits of a population over time. The distribution of traits in a population change over time. Natural selection is a process by which a population’s environment determines which traits are beneficial and which are not. Artificial selection is a process by which humans modify a species by breeding it for certain traits. Natural and artificial selection act on the variation of traits that is already present in a population and both result in a change in the distribution of those traits.
Tags
NGSS.HS-LS4-4
NGSS.HS-LS4-2
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following describes how natural selection increased the strength of the arms of sloths over many generations?
Sloths were bred over many generations to have strong arms that allow them to survive in the wild.
Sloths born with strong arms had a better chance of surviving to pass the trait for strong arms to their offspring.
Sloths born with weak arms had to get stronger in order to survive and then passed the trait for strong arms to their offspring.
Answer explanation
Strong arms were naturally selected for over many generations because this helped those sloths survive.
Tags
NGSS.HS-LS4-4
NGSS.HS-LS4-2
3.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Which of the following is an example of how natural selection changed the occurrence of long claws in the sloth population over generations? Select 4
The length of a sloth's claws is an inherited genetic trait.
Being able to cling to trees is important for sloths so they can find food and survive.
Because the parent sloths use their claws a lot, the next generation of sloths will have longer claws.
Sloths born with longer claws were able to cling to trees better than sloths born with short claws.
Sloths with longer claws had a better chance of living long enough to reproduce than sloths with short claws.
Answer explanation
Claw length is controlled by genes. Long claws improve the chances a sloth will live long enough to reproduce and pass the genes for longer claws to its offspring.
Tags
NGSS.HS-LS4-4
NGSS.HS-LS4-2
NGSS.HS-LS4-5
4.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Which of the following describes how artificial selection can increase the size of tomatoes in a population over several generations? Select all that apply.
The farmer identifies the tomato plants that produce the largest tomatoes.
The farmer injects some of the tomatoes with water to artificially increase their size.
The farmer only uses the seeds that come from the largest tomatoes when planting the next generation of tomato plants.
Answer explanation
A farmer will select plants with the desired trait and use them to produce the next generation of offspring.
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following is an example of how artificial selection changes the occurrence of traits in a population over generations?
by only breeding animals that have desirable genetic traits
by randomly breeding animals that have a variety of genetic traits
by carefully breeding animals that have a lot of variation in the desired traits
Answer explanation
During artificial selection only animals with the desired traits are bred.
6.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Which of the following are characteristics of scientific theories? Select 4
Scientific theories have been repeatedly tested.
Scientific theories are well-supported explanations.
Scientific theories are good hypotheses about observations.
Scientific theories explain observations scientists have made.
Answer explanation
Scientific theories are well-supported explanations of observations that have been tested many times.
Tags
NGSS.HS-LS4-1
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the two types of evolutionary selection discussed?
Natural and Artificial Selection
Selective and Non-selective Breeding
Genetic and Environmental Selection
Adaptive and Random Selection
Tags
NGSS.HS-LS4-4
NGSS.HS-LS4-2
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