Sample Questions For Mt 1

34 Questions  I  By Cmoherman
Please take the quiz to rate it.

 Sample Questions For Mt 1

  
Changes are done, please start the quiz.


Questions and Answers

Removing question excerpt is a premium feature

Upgrade and get a lot more done!
  • 1. 
    Sympatric speciation occurs most commonly in          
    • A. 

      Plants

    • B. 

      Animals


  • 2. 
    Which agent of selection is the only source of new allelic variation?      
    • A. 

      Mutation

    • B. 

      Genetic drift

    • C. 

      Natural Selection

    • D. 

      Adaptive radiation

    • E. 

      Extinction


  • 3. 
    The K-T boundary is associated with what phenomenon/phenomena?       
    • A. 

      Impact crater

    • B. 

      The disappearance of dinosaurs

    • C. 

      The opportunity for mammals to radiate and evolve

    • D. 

      The decreased dominance of gymnosperms

    • E. 

      All of the above


  • 4. 
    The supercontinent that existed 250 million years ago is called       
    • A. 

      Pandemonium

    • B. 

      Pangaea

    • C. 

      Gondogaea

    • D. 

      Australasia

    • E. 

      Eurasia


  • 5. 
    Which one of these people did not contribute to Darwin’s thought process about evolution?    
    • A. 

      Lyell

    • B. 

      Mendel

    • C. 

      Hutton

    • D. 

      Cuvier

    • E. 

      Malthus


  • 6. 
    The goal of natural selection is to    
    • A. 

      Fashion a trait that is most suited to the environment

    • B. 

      Fashion an individual that is most suited to the environment

    • C. 

      Fashion a population that is most suited to the environment

    • D. 

      Fashion a species that is most suited to the environment

    • E. 

      None of the above


  • 7. 
    One of the reasons we have little sense of plants having alternation of generations is because    
    • A. 

      The sporophyte is so reduced in angiosperms

    • B. 

      The gametophyte is so reduced in angiosperms

    • C. 

      Alternation of generations is maintained only in mosses and ferns

    • D. 

      Alternation of generations is maintained only in algae

    • E. 

      None of the above


  • 8. 
    As a single cell gets bigger and bigger, what about it gets smaller and smaller?    
    • A. 

      Surface Area (SA)

    • B. 

      V

    • C. 

      SA/V ratio

    • D. 

      Radius/diameter ratio

    • E. 

      All of the above


  • 9. 
    What was the prevailing belief prior to the time of Lyell and Darwin?    
    • A. 

      Earth is a few thousand years old, and populations are unchanging

    • B. 

      Earth is a few thousand years old, and populations gradually change

    • C. 

      Earth is millions of years old, and populations rapidly change

    • D. 

      Earth is millions of years old, and populations are unchanging

    • E. 

      Earth is millions of years old, and populations gradually change


  • 10. 
    Which of the following must exist in a population before natural selection can act upon that population?    
    • A. 

      Genetic variation among individuals

    • B. 

      Variation among individuals caused by environmental factors

    • C. 

      Sexual reproduction

    • D. 

      Three of the responses are correct

    • E. 

      Two of the responses are correct


  • 11. 
    The role that humans play in artificial selection is to     
    • A. 

      Determine who lives and who dies

    • B. 

      Create the genetic variants, which nature then selects

    • C. 

      Choose which organisms breed, and which do not

    • D. 

      Train organisms to breed more successfully

    • E. 

      Perform artificial insemination


  • 12. 
    Structures as different as human arms, bat wings, and dolphin flippers contain many of the same bones, these bones having developed from very similar embryonic tissues. How do biologists interpret these similarities?    
    • A. 

      By identifying the bones as being homologous structures

    • B. 

      By the principle of convergent evolution

    • C. 

      By proposing that humans, bats, and dolphins share a common ancestor

    • D. 

      Three of the statements above are correct

    • E. 

      Two of the statements above are correct


  • 13. 

    Currently, two extant elephant species (X and Y) are placed in the genus Loxodonta and a third species (Z) is placed in the genus Elephas. Assuming this classification reflects evolutionary relatedness, which of the following is the most accurate phylogenetic tree?     
    • A. 

      A

    • B. 

      B

    • C. 

      C

    • D. 

      D

    • E. 

      E


  • 14. 
    Which of the following is not an observation or inference on which natural selection is based?    
    • A. 

      There is heritable variation among individuals

    • B. 

      Poorly adapted individuals never produce offspring

    • C. 

      Species produce more offspring than the environment can support

    • D. 

      Individuals whose characteristics are best suited to the environment generally leave more offspring than those whose characteristics are less well suited

    • E. 

      Only a fraction of an individual's offspring may survive


  • 15. 
    Which of the following is a true statement concerning genetic variation?    
    • A. 

      It is created by the direct action of natural selection

    • B. 

      It arises in response to changes in the environment

    • C. 

      It must be present in a population before natural selection can act upon the population

    • D. 

      It tends to be reduced by the processes involved when diploid organisms produce gametes

    • E. 

      A population that has a higher average heterozygosity has less genetic variation than one with a lower average heterozygosity


  • 16. 
    In a Hardy-Weinberg population with two alleles, A and a, that are in equilibrium, the frequency of allele a is 0.1. What is the frequency of individuals with AA genotype?    
    • A. 

      0.20

    • B. 

      0.32

    • C. 

      0.42

    • D. 

      0.81

    • E. 

      Genotype frequency cannot be determined from the information provided


  • 17. 
    Which of the following is most likely to produce an African butterfly species in the wild whose members have one of two strikingly different color patterns?    
    • A. 

      Artificial selection

    • B. 

      Directional selection

    • C. 

      Stabilizing selection

    • D. 

      Disruptive selection

    • E. 

      Sexual selection


  • 18. 

    D. Anopheles mosquitoes, which carry the malaria parasite, cannot live above elevations of 5,900 feet. In addition, oxygen availability decreases with higher altitude. Consider a hypothetical human population that is adapted to life on the slopes of Mt. Kilimanjaro in Tanzania, a country in equatorial Africa. Mt. Kilimanjaro's base is about 2,600 feet above sea level and its peak is 19,341 feet above sea level. If the incidence of the sickle-cell allele in the population is plotted against altitude (feet above sea level), which of the following distributions is most likely, assuming little migration of people up or down the mountain?     
    • A. 

      A

    • B. 

      B

    • C. 

      C

    • D. 

      D


  • 19. 
    There is still some controversy among biologists about whether Neanderthals should be placed within the same species as modern humans or into a separate species of their own. Most DNA sequence data analyzed so far indicate that there was probably little or no gene flow between Neanderthals and Homo sapiens. Which species concept is most applicable in this example? A) phylogenetic B) ecological C) morphological D) biological     
    • A. 

      Phylogenetic

    • B. 

      Ecological

    • C. 

      Morphological

    • D. 

      Biological


  • 20. 
    Among known plant species, which of these have been the two most commonly occurring phenomena that have led to the origin of new species? 1. allopatric speciation 2. sympatric speciation 3. sexual selection 4. polyploidy    
    • A. 

      1 and 3

    • B. 

      1 and 4

    • C. 

      2 and 3

    • D. 

      2 and 4


  • 21. 
    Approximately how far back in time does the fossil record extend? A) 3.5 million years B) 5.0 million years C) 3.5 billion years D) 5.0 billion years     
    • A. 

      3.5 million years

    • B. 

      5.0 million years

    • C. 

      3.5 billion years

    • D. 

      5.0 billion years


  • 22. 
    Upon being formed, oceanic islands, such as the Hawaiian Islands, should feature what characteristic, leading to which phenomenon?    
    • A. 

      Mass extinctions, leading to bottleneck effect

    • B. 

      Major evolutionary innovations, leading to rafting to nearby continents

    • C. 

      A variety of empty ecological niches, leading to adaptive radiation

    • D. 

      Adaptive radiation, leading to founder effect

    • E. 

      Overcrowding, leading to rafting to nearby lands


  • 23. 
    Which kingdom has been replaced with two domains?    
    • A. 

      Plantae

    • B. 

      Fungi

    • C. 

      Animalia

    • D. 

      Protista

    • E. 

      Monera


  • 24. 
    Which of the following is (are) problematic when the goal is to construct phylogenies that accurately reflect evolutionary history?    
    • A. 

      Polyphyletic taxa

    • B. 

      Paraphyletic taxa

    • C. 

      Monophyletic taxa

    • D. 

      Two of the responses are correct


  • 25. 

    Based on this tree, which statement is not correct?        
    • A. 

      The salamander lineage is a basal taxon

    • B. 

      Salamanders are a sister group to the group containing lizards, goats, and humans

    • C. 

      Salamanders are as closely related to goats as to humans

    • D. 

      Lizards are more closely related to salamanders than to humans


  • 26. 
    Match the numbered terms to the description that follows. Choose all appropriate terms. autotroph heterotroph phototroph chemotroph an organism that relies on photons to excite electrons within its membranes    
    • A. 

      1 only

    • B. 

      3 only

    • C. 

      1 and 3

    • D. 

      2 and 4


  • 27. 
    All protists are     
    • A. 

      Unicellular

    • B. 

      Eukaryotic

    • C. 

      Symbionts

    • D. 

      Monophyletic

    • E. 

      Mixotrophic


  • 28. 
    The functional role of sporopollenin is primarily to    
    • A. 

      Comprise spore surface structures that catch the wind and assist in spore dispersal

    • B. 

      Reduce dehydration

    • C. 

      Make spores less dense and able to disperse more readily

    • D. 

      Repel toxic chemicals

    • E. 

      Provide nutrients to spores


  • 29. 
    Which of the following is true of the life cycle of mosses? A) The haploid generation grows on the sporophyte generation. B) Spores are primarily distributed by water currents. C) Antheridia and archegonia are produced by gametophytes. D) The sporophyte generation is dominant. E) The growing embryo gives rise to the gametophyte.     
    • A. 

      The haploid generation grows on the sporophyte generation

    • B. 

      Spores are primarily distributed by water currents

    • C. 

      Antheridia and archegonia are produced by gametophytes

    • D. 

      The sporophyte generation is dominant

    • E. 

      The growing embryo gives rise to the gametophyte


  • 30. 
    Big Bend National Park in Texas is mostly Chihuahuan desert, where rainfall averages about 10 inches per year. Yet, it is not uncommon when hiking in this bone-dry desert to encounter mosses and ferns. One such plant is called "flower of stone." It is not a flowering plant, nor does it produce seeds. Under arid conditions, its leaflike structures curl up. However, when it rains, it unfurls its leaves, which form a bright green rosette on the desert floor. Consequently, it is sometimes called the "resurrection plant." At first glance, it could be a fern, a true moss, or a spike moss. Which of the following features is most important in order for true mosses and ferns to survive and reproduce in the desert?    
    • A. 

      That the sporophytes occupy only permanently shady, north-facing habitats

    • B. 

      That the sporophytes hug the ground, growing no taller than a couple of inches

    • C. 

      Either that their gametophytes grow close together, or that they be hermaphroditic

    • D. 

      That the sporophytes have highly lignified vascular tissues


  • 31. 
    Which group is noted for the independence of gametophyte and sporophyte generations from each other?    
    • A. 

      Ferns

    • B. 

      Mosses, hornworts, and liverworts

    • C. 

      Charophytes

    • D. 

      Angiosperms

    • E. 

      Gymnosperms


  • 32. 
    In addition to seeds, which of the following characteristics are unique to the seed- producing plants?    
    • A. 

      Sporopollenin

    • B. 

      Lignin present in cell walls

    • C. 

      Pollen

    • D. 

      Use of air currents as a dispersal agent

    • E. 

      Megaphylls


  • 33. 
    Which of the following statements correctly describes a portion of the pine life cycle?    
    • A. 

      Female gametophytes use mitosis to produce eggs

    • B. 

      Seeds are produced in pollen-producing cones

    • C. 

      Pollen grains contain female gametophytes

    • D. 

      A pollen tube slowly digests its way through the triploid endosperm


  • 34. 
    How have fruits contributed to the success of angiosperms?    
    • A. 

      By nourishing the plants that make them

    • B. 

      By facilitating dispersal of seeds

    • C. 

      By attracting insects to the pollen inside

    • D. 

      By producing sperm and eggs inside a protective coat

    • E. 

      By producing triploid cells via double fertilization


Back to top

Removing ad is a premium feature

Upgrade and get a lot more done!
Take Another Quiz
We have sent an email with your new password.