Provide evidence that coevolution between plants and animals is probably more important in angiosperms than
gymnosperms.
What will be an ideal response?
ANSWER: The pollen of gymnosperms is dispersed by wind. However, the pollen of many
angiosperms is dispersed by animals. Therefore, angiosperms coevolved with pollinators.
The fact that angiosperms have distinctive flowers, scents, and sugary nectar to attract and
reward animals, and that plant-pollinator relationships are often very specific, is evidence
that coevolution is more important in angiosperms than gymnosperms.
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A Rossmann fold most likely is created when:
A. the ?-?-? motif is repeated within a polypeptide. B. the Greek key motif is repeated within a polypeptide. C. an ? helix facilitates the creation of a ?-?-? barrel structure. D. an ? helix prevents the creation of a ?-?-? barrel structure. E. a dimer contains subunits that are mirror images.
The sunflower species Helianthus anomalus is thought to have been formed by hybridization between the sunflower species H. petiolaris and H. annuus because it contains a set of chromosomes from both parental species. H. anomalus is most likely an example of instantaneous speciation through
A. allopolyploidy. B. parthenogenesis. C. hybrid sterility. D. autopolyploidy.
Which of the following statements concerning genital warts is FALSE?
A) They can be transmitted via fomites. B) They can travel to different locations on the same individual by autoinoculation. C) They can be sexually transmitted. D) The virus may remain latent and cause lesions at a later time. E) The incidence is relatively low because treatment is available.
A microbiologist explains to one of her biology classes that her research focuses on the nucleoid region of the cholera bacteria. This means that she is studying a region within the bacterium that contains the
A. R plasmids. B. peptidoglycan. C. nucleic acids. D. nuclear membrane.