8th Grade Unit 5 Lesson 3 Quiz
Authored by Adam Lane
Science
6th - 8th Grade
Used 7+ times
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7 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Selective breeding has been used to create plants that are more resistant to disease. Of what is this an example?
an organism being used as part of a technological process
an organism being changed through a technological process
a new technology inspired by the natural structure of a living organism
a new technology being directly developed from the structure of an organism
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A farmer wants to produce sweeter grapes using artificial selection. Which of these strategies can he use to achieve this goal?
Add more fertilizer to the soil to increase sugar production
Crossbreed the two sweetest vines in the vineyard to produce new plants
Use cuttings from the vines that produce the sweetest grapes to produce new plants
Use a virus to introduce genes from sugarcane into existing grapevines
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Which of these technological advances is not an example of artificial selection?
breeding of short-haired dogs
the domestication of the housecat
the cultivation of a tomato species with a rich flavor
insertion of coral genes into fish to give them a bright neon color
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Artificial selection can be used to produce new strains of animals that have favorable traits. Despite its usefulness, it would be difficult to use artificial selection to produce cows that produce their own antibiotics to protect themselves from disease Why can't artificial selection be used for this purpose?
Antibiotics are used only in humans and not in cows
The pathway for antibiotic production requires too many enzymes for selection
Cows do not possess the specialized organs used by other creatures to produce antibiotics
A gene for producing antibiotics does not appear in the cow population and therefore cannot be selected for
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Which statement does not apply to the traits present in a population as a result of artificial selection?
Traits are desirable to humans
Traits may not increase chance of survival or reproduction
Traits are different than when environmental factors are the selective pressure
Traits are present only in the phenotype and not in the genotype of the population
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Artificial selection has been used by farmers over decades to breed chickens with larger and larger breasts. The meat of many of these strains is tough and not flavorful. Why would breeding chickens with larger breasts produce tough breast meat?
Larger chickens do not get enough exercise
Genes for meat tenderness and size are linked
No selective pressure was placed on the tenderness of the meat while breeding for larger breasts
Farmers have not been feeding their chicken flocks the correct feed
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A farmer raising cattle artificially inseminates his cows using the sperm of a bull instead of allowing them to become pregnant on their own. Why is this an example of artificial selection?
The farmer is producing beef for market
The farmer chose which cows and bulls to breed based on their traits
The farmer randomly selected the bull and cows
The farmer is creating a more efficient process for raising cows
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