- A newly mated queen ant establishes an ant nest in an unoccupied patch of suitable habitat. The population of the nest grows quickly at first, then levels off at carrying capacity. Which of the following models best describes its population growth?a. linearb. logarithmic c. logistic d. exponential
- How do corals react when water temperatures are too high?a. they migrate to areas with lower water temperatures b. they slow slow down their shell-building processesc. they expel their symbiotic algaed. they reproduce in large numberse. they produce more pigment
- A line transect would probably be the preferred method to quantify the population density of a. blackbirdsb.lionsc. clown fishd.ponderosa pinese. swallowtail butterflies
- Capsids are composed of one or several _______ subunits called ________; variety of shapes - helical and polyhedral
- You drive through Iowa in the spring and notice that along a stretch of several kilometers, every third fence post has a male redwing blackbird perched on it defending its nesting territory. This is an example of a. clumped dispersionb. random dispersionc. uniform dispersiond. artificial dispersion
- The greatest annual input and least seasonal variation in solar radiation occurs in the a. southern hemisphereb.temperate zonesc.tropics d. polar regions
- The level of ecologic organization that incorporates abiotic factors is the a. communityb. ecosystemc. populationd.species
- While on a walk through a forest, you notice birds in trees, earthworms in the soil, and fungi on plant litter on the forest floor. Based on your observations, you conclude that each of these organisms occupies a differenta. habitatb.ecosystemc.biosphered.biome
- In red-winged blackbirds, females tend to choose males within the most desirable territories and males compete with each other for territories. True or False: Redwing blackbirds demonstrate both intersexual selection and intrasexual selection a. true b. false
- The scientific name for the golden crayfish is Orconectes luteus. Based on this information, the crayfish is a member of what genus? a. orconectes luteusb.orconectesc.luteusd. O. luteuse. orconectes l.
- When people speak of the "rain shadow" of the Himalayan moutains, where the Gobi desert is, they are referring to the a. shadow cast by the mist and clouds that hover above the crest of the rangeb. forested condition of the eastern flank of the range compared to the western flankc. scarcity of rain on the eastern flank and adjacent lowlands compared to the western flankd. dark-colored chaparral vegetation that grows on the eastern flank
- In terms of global air circulation, the tropics are a region where aira. descends and warms, dropping rainb.rises and warms , creating an arid beltc.rises and cools, creating an arid beltd.rises and cools, dropping rain
- Which of the phylogenetic trees above best demonstrates cladogenesis?a. tree 1b. tree 2 c. tree 3d. both tree 2 and tree 3 e. both tree 1 and tree 2
- Frequently, a group of related species will each have a unique courtship ritual that must be performed correctly for both partners to be willing to mate. Such a ritual constitutes a _______ ________ reproductive barrier. a. mechanical; postyzygotic b. behavioral;prezygoticc. temporal; prezygotic d. gametic; postzygotic
- Which would be most likely to be fossilized?a. a common large wormb.a common thick-shelled crustaceanc. an herbaceous plant that is only found at very high altitudes d. a rare, desert dwelling lizard
- All of Earth that is inhabited by life is called thea. atmosphereb.ecosystemc.biosphered. biome
- Male deer have large antlers that are used to challenge each other in fights for territory and females. The females of this group actively choose the strongest males. Which type of sexual selection is occurring with the deer population?a. stabilizing selectionb.negative frequency-dependant selectionc.intersexual selectiond. intrasexual selectione. c and d
- According to the figure, which pair of organisms shares the most recent common ancestor? a. lungfishes and amphibiansb. amphibians and lizardsc.mammals and crocodiles d. lizards and ostriches a
- A phylogenetic tree shows the hypothesized evolutionary relationships among organisms, meaning that its structure can be revised and changed as new information about those relationships become known a. true b. false
- The change in curves in the graph above represent a. a decrease in genetic variation in a population of mice b. the appearance of a new allele for darker color in a population of mice c. a shift in the range of genetic variation in a population of mice d. a lack of genetic variation for light fur color in the original population of mice