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Quiz 2 Biodiversity, Evolution And Ecology Questions And Answers Actual Solution
- Course
- BIO 1
- Institution
- Stanford University
Quiz 2 Biodiversity, Evolution And Ecology Questions And Answers Actual Solution
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Q&AQuiz 2: Biodiversity, Evolution And
Ecology Questions And Answers
Actual Solution
Biodiversity enhances human food security because it:
a) provides potentially new food options or new genetic varieties of existing
foods
b) means that there is genetic uniformity among the most common plants
and animals used for food
c) decreases the number of available disease-causing organisms
d) reduces the number of pollinators available to many important food
crops
e) increases the number of pests that affect the plants and animals used for
food - Answers a)
A species' worth, based on its usefulness to humans, is called its _____.
a) biotic potential
b) implicit nature
c) net worth
d) instrumental value
e) intrinsic value - Answers d)
, Q&A
What phenomenon explains what happens when there is a decrease in the
frequency of a particular trait due to random mating?
a) bottleneck effect
b) founder effect
c) random mutations
d) natural selection
e) genetic drift - Answers e)
What are the two processes that determine the world's current biodiversity?
a) sexual reproduction and asexual reproduction
b) extinction and speciation
c) mutation and sexual reproduction
d) endemism and extirpation
e) allopatric and sympatric speciation - Answers b)
What term best describes the genetic variation among individuals of a
single population or within the species as a whole?
a) mutation
b) genetic diversity
c) coevolution
d) natural selection
e) extirpation - Answers b)
, Q&A
The more genetically diverse a population is, the more likely ___________.
a) unfavourable traits will be selected for adaptation
b) favourable traits will be selected through natural selection
c) the population will not survive
d) the population will be lost to global climate change
e) the population will be reduced to the minimum viable number of
individuals - Answers b)
What is an endemic species?
a) It is a species that causes disease.
b) It is an invasive species that can lead to the extinction of native species.
c) It is a generalist organisms.
d) It is a species with high rates of mutations that lead to large numbers of
offspring species.
e) It is a species found only in one place on the planet. - Answers e)
Which of the following is not true of endemic species?
a) They are less susceptible to extinction than other categories of species.
b) An endemic population cannot easily disperse to share genes with other
populations.
c) They exist in only one area on Earth.
d) They are commonly found in small isolated ecosystems.
e) They are specially adapted to their environment. - Answers a)
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