BIOL 59200 Midterm: Exam 1 Practice Questions
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Question 402 pts
You go on an expedition to the mountain forests of the remote island of Halmahera, Indonesia. You discover a new species of arboreal primate that is only found deep in the forest. It is endemic to a single mountain range and is found nowhere else. Logging companies are beginning to explore the area and may start building roads soon in order to provide access to the remote forest for logging.
What effects could road building have on the primate population within the next 10 years?
SELECT ALL THAT APPLY (You may need to select more than one answer)
Higher light penetration and lower relative humidity could make areas alongside the roads less suitable for the primates |
The likelihood of contracting a new disease would increase in the primate population |
Speciation could occur so that populations in isolated forest fragments could split into different species |
Its population could increase because of the greater availability of forest edges for foraging |
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Question 412 pts
Which of the below is NOT an example of an ecosystem service?
Pollination of crops by native bees |
Revenue generated by clear-cutting of tropical dry forest |
The presence of an intact forest maintaining constant water flow in streams throughout the dry season in a tropical region |
Rainforest trees removing carbon from the atmosphere |
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Question 422 pts
Climate change must be factored into the design of new conservation areas and in new land acquisitions made by current reserves. Which of the below types of habitat would be given highest priority for conservation in light of climate change?
SELECT ALL THAT APPLY (You may need to select more than one answer)
Small isolated patches of habitat |
Long and narrow areas of habitat that are oriented parallel to latitude |
Patches of habitat that join existing conservation areas |
Elevational gradients |
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Question 432 pts
The Ngorongoro Crater lion population in Tanzania is isolated from nearby Serengeti lion populations. In 1962, the population crashed due to disease, dropping from 90 individuals to less than 20. The population of lions today is currently exhibiting a high rate of sperm abnormalities, which are rare outside the crater population. What is the likely cause of this?
SELECT ALL THAT APPLY (You may need to select more than one answer)
Matings between closely related individuals |
Natural selection for fitter sperm phenotypes |
Radiation from the crater that is causing new mutations |
Lower genetic diversity than normal populations of lions due to a population bottleneck in 1962 |
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Question 442 pts
What is considered to be the most likely hypothesis for the cause of the extinction of the Pleistocene megafauna?
Hunting by early humans |
An asteroid collision that changed the climate |
Massive volcanic eruptions that strengthened the greenhouse effect and led to global warming |
The global radiation of marsupial mammals that outcompeted the megafauna and made them go extinct |
Will rate when all are answered.
An organism that is cephalized is probably ___________________.
bilaterally symmetrical | ||
is segmented | ||
is diploblastic | ||
has a coelom |
1 points
QUESTION 33
Cotton-topped tamarins are small primates with tufts of long white hair on their heads. While studying these creatures, you notice that males with longer hair get more opportunities to mate and father more offspring. To test the hypothesis that having longer hair is adaptive in these males, you should _____.
test whether other traits in these males are also adaptive | ||
look for evidence of hair in ancestors of tamarins | ||
determine if hair length is heritable | ||
test whether males with shaved heads are still able to mate |
1 points
QUESTION 34
Which of these is not an animal?
ctenophore | ||
poiferan | ||
choanoflagellate | ||
cnidaria |
1 points
QUESTION 35
What would be the best anatomical feature to look for to distinguish a gastropod from a chiton?
presence of muscular foot | ||
presence of a radula | ||
production of eggs | ||
number of shell plates |
1 points
QUESTION 36
If radial cleavae occurs during development, the animal will be a protostome.
True
False
1 points
QUESTION 37
The "heart" of arthopods is located ______________.
ventrally | ||
centrally | ||
dorsally | ||
sagitally |
1 points
QUESTION 38
Which structure do bivalves use for feeding?
radula | ||
ctenidia (gills) | ||
beak | ||
foot |
1 points
QUESTION 39
Claytonia virginica is a woodland spring herb with flowers that vary from white to pale pink to bright pink. Slugs prefer to eat pink-flowering over white-flowering plants (due to chemical differences between the two), and plants experiencing severe herbivory are more likely to die. The bees that pollinate this plant also prefer pink to white flowers, so that Claytonia
with pink flowers have greater relative fruit set than Claytonia with white flowers. A researcher observes that the percentage of different flower colors remains stable in the study population from year to year. Given no other information, if the researcher removes all slugs from the study population, what do you expect to happen to the distribution of flower colors in the population over time? 22.2
The percentage of pink flowers should increase over time. | ||
The percentage of white flowers should increase over time. | ||
The distribution of flower colors should not change. | ||
The distribution of flower colors should randomly fluctuate over time. |
1 points
QUESTION 40
The water vascular system of echinoderms _____________.
functions as a circulatory system that distributes nutrients to body cells | ||
function in locomotion and feeding | ||
is bilateral in organization, even though the adult animal is not blaterally symmetrical | ||
is analogous to the gastrovascular cavity of flatworms |
1 points
QUESTION 41
In Phylum Mollusca, the fluid of the open circulatory system is called hemolymph.
True
False
1 points
QUESTION 42
You find what you believe is a new species of animal. Which of the following characteristics would enable you to argue that it is more closely related to a flatworm than it is to a roundworm?
It is a suspension feeder. | ||
It has no coelom. | ||
It is shaped like a worm. | ||
It has a mouth and an anus. |
1 points
QUESTION 43
You observe that a mystery organism in a pond never comes up to the pond's surface. If you are able to catch one of these organisms, bring it to the lab and dissect it, you should find ______________.
gills | ||
spiracle | ||
trachea | ||
book lungs |
1 points