Which of the following types of interactions is advantageous for one species, but has no effect on the
other?
a. commensalism
b. herbivory
c. mutualism
d. parasitism
e. predation
A
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The bones in the forelimbs of a mammal ____
a. can often be traced to a common ancestor b. offer no evidence to support the theory of evolution c. perform the same function no matter which species they are in d. may exhibit either analogy or homology but not both when compared to the forelimb of another animal e. show convergence with some invertebrate structures
A fetus is
a. a newborn pig. b. a newborn human. c. an unborn mammal. d. all of the above.
Which group of flatworms are primarily external parasites of fish?
a) monogeneans b) trematodes c) cestodes d) turbellarians
Choose the letter of the best match from the following:A. birth control pillB. intrauterine deviceC. diaphragmD. foams and jelliesE. vasectomyPrevention of egg maturation and ovulation.
Fill in the blank(s) with the appropriate word(s).