ASU BIO 182 EXAM 3- COMPLETE QUESTIONS AND
DETAILED SOLUTIONS LATEST UPDATE THIS YEAR
JUST RELEASED
Question 1: True or False? When cane toads are added to a
community, the number of crimson finches should decrease.
Answer:
False; the number of crimson finches should increase and benefit from
the introduction of cane toads as they have a negative affects on those
eating them, meaning that they are not preying on as many crimson
finches as they use to.
Question 2: True or False? A cane toad is a keystone species in
this Australian community.
Answer:
True; yet has a negative impact on a diversity of a community.
Question 3: What determines the productivity of a community?
Answer:
Sunlight, water, trace elements (nitrogen) and minerals that plants can
collect from the ground.
Question 4: True or False? More solar radiation and more
precipitation would likely result in more energy for carnivores.
Answer:
True; plants absorb the solar radiation, using it to make energy,
carbohydrates from photosynthesis; then herbivores can eat those
plants and the energy can get up to the herbivores; if there is more solar
radiation, there could be more plant growth, and if there's more plant
growth, there could be more herbivores eating the plant tissue; if there
are more herbivores, then the carnivores will have more food and more
energy.
, Question 5: True or False? If productivity enhances diversity, one
should see more species in deep tropical waters than along
shallow coastlines.
Answer:
False; so if productivity enhances diversity, one should see more
species along shallow coastlines; even though we're not seeing that,
that's what we would predict if it was all about productivity.
Question 6: True or False? Greater productivity could support more
individuals of a species without supporting more species.
Answer:
True; just because you have this huge amount of primary productivity
doesn't mean that what it's gonna give you is more species; productivity
will mean that you can have more organisms in a place, but it doesn't
guarantee you having more species in a place; the difference between
more and diverse is important; when you have a lot of productivity, all
you get is more gray squirrels and more blue jays, but you don't get lots
of different birds and lots of different squirrels, or lots of different
mammals and rodents.
Question 7: The greatest density of species occurs at the North
Pole.
Answer:
False
Question 8: Species in the tropics should have
__________________________
Answer:
narrow niches because they experience stable conditions.
Question 9: Dan Janzen argued that tropical communities contain
more species because __________________________
Answer:
DETAILED SOLUTIONS LATEST UPDATE THIS YEAR
JUST RELEASED
Question 1: True or False? When cane toads are added to a
community, the number of crimson finches should decrease.
Answer:
False; the number of crimson finches should increase and benefit from
the introduction of cane toads as they have a negative affects on those
eating them, meaning that they are not preying on as many crimson
finches as they use to.
Question 2: True or False? A cane toad is a keystone species in
this Australian community.
Answer:
True; yet has a negative impact on a diversity of a community.
Question 3: What determines the productivity of a community?
Answer:
Sunlight, water, trace elements (nitrogen) and minerals that plants can
collect from the ground.
Question 4: True or False? More solar radiation and more
precipitation would likely result in more energy for carnivores.
Answer:
True; plants absorb the solar radiation, using it to make energy,
carbohydrates from photosynthesis; then herbivores can eat those
plants and the energy can get up to the herbivores; if there is more solar
radiation, there could be more plant growth, and if there's more plant
growth, there could be more herbivores eating the plant tissue; if there
are more herbivores, then the carnivores will have more food and more
energy.
, Question 5: True or False? If productivity enhances diversity, one
should see more species in deep tropical waters than along
shallow coastlines.
Answer:
False; so if productivity enhances diversity, one should see more
species along shallow coastlines; even though we're not seeing that,
that's what we would predict if it was all about productivity.
Question 6: True or False? Greater productivity could support more
individuals of a species without supporting more species.
Answer:
True; just because you have this huge amount of primary productivity
doesn't mean that what it's gonna give you is more species; productivity
will mean that you can have more organisms in a place, but it doesn't
guarantee you having more species in a place; the difference between
more and diverse is important; when you have a lot of productivity, all
you get is more gray squirrels and more blue jays, but you don't get lots
of different birds and lots of different squirrels, or lots of different
mammals and rodents.
Question 7: The greatest density of species occurs at the North
Pole.
Answer:
False
Question 8: Species in the tropics should have
__________________________
Answer:
narrow niches because they experience stable conditions.
Question 9: Dan Janzen argued that tropical communities contain
more species because __________________________
Answer:
