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WorksheetsVariation and Natural Selection
Total questions: 10
Worksheet time: 7mins
Name
Class
Date
1.
Which example below describes an internal adaptation of an organism trying to perform a specific task?
a)
Ducks live together in groups
b)
Tree frogs change color to hide in the forest
c)
Birds have hollow bones that help them fly
d)
Bears have thick fur to protect them in cold weather
2.
Inside the nucleus, genes are found on which of the following?
a)
Chromosomes
b)
Chloroplasts
c)
Mitochondria
d)
Vacuole
3.
Which type of reproduction will produce offspring that are genetically identical to the parent organism?
a)
sexual reproduction
b)
asexual reproduction
c)
both
d)
neither
4.
When bird populations mix due to migration, gene frequencies may increase or decrease. This will cause which of the following to happen?
a)
less variation in the gene pool and survival is not affected
b)
Selective breeding, with enhanced chances of survival
c)
Natural Selection, with no impact on survival
d)
increased genetic variation and an increase in chance of survival
5.
The passage of genetic instructions from one generation to the next is known as
a)
genetic variation
b)
natural adaptation
c)
heredity
d)
natural selection
6.
Why does the Hood mockingbird have a longer beak than the other mockingbirds?
a)
The beak stretched to reach its food
b)
It's an adaptation
c)
The Hood mockingbird came from a different bird species
d)
The Hood mockingbird uses it for defense
7.
This is a hydra. Hydras reproduce asexually by budding, a process where a bud will break off and float away. How would you describe the new hydra bud?
a)
it has half of the genetic material from the parent
b)
it has genetic material from both parents
c)
it is genetically identical to the parent
d)
It mutates differently from its parent
8.
Which statements are true about heredity?
1. Genes are also known as genetic material.
2. Genetic material is found in chloroplasts
3. Genes are found in chromosomes.
4. Chromosomes are found in vacuoles.
5. Chromosomes are found in the nucleus.
1. Genes are also known as genetic material.
2. Genetic material is found in chloroplasts
3. Genes are found in chromosomes.
4. Chromosomes are found in vacuoles.
5. Chromosomes are found in the nucleus.
a)
1, 3, and 5
b)
1, 2, and 5
c)
1, 4, and 5
d)
1, 2, 3, 4, 5
9.
Why do beaks of the same bird species look different?
a)
The birds chose to mutate to survive
b)
Humans bred them to make the changes
c)
The birds adaptedover time through natural selection
d)
Through non-random variation
10.
Which of the following is a disadvantage of asexual reproduction?
a)
The organisms are smaller
b)
Increase in physical variation
c)
genetic similarity and less likely to survive environmental change
d)
takes a relatively short amount of time
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