The heartworms that can accumulate within the hearts of dogs and other mammals have a pseudocoelom, an alimentary canal, and an outer covering that is occasionally shed. To which phylum does the heartworm belong?
A) Platyhelminthes
B) Arthropoda
C) Nematoda
D) Annelida
C
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Microsporangia in flowering plants are located in the _____
A) stamen B) carpel C) petals D) sepals E) receptacle
Which of the following is an amphibian?
A. coelacanth B. turtle C. octopus D. toad E. lizard
The "fundamental niche" of an organism is defined as the
a) climatic conditions required for the organism to survive and reproduce b) range of environmental conditions under which the organism can survive and reproduce c) area that an organism occupies immediately after birth d) physical space that the organism occupies e) area in which the organism reproduces
Koch's postulates are an example of
A) retrospective epidemiology B) descriptive epidemiology C) prospective epidemiology D) experimental epidemiology