A tapeworm living in a person's intestine is
A. a vector.
B. an internal parasite.
C. a mutualistic organism.
D. a predator.
B. an internal parasite.
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The structure(s) that easily distinguishes a plant cell from an animal cell is/are
_____ chloroplasts. _____ nucleus. _____ cell wall. _____ the Golgi apparatus.
The study of patterns in the geographical distribution of species is called ________
a. evolutionary biology b. biodiversity c. biogeography d. population genetics
An arthropod embryo has ________ germ layer(s)
A) no B) one C) two D) three E) four
A physician specializes in surgery involving the following group of organs: mouth, esophagus, stomach and intestines. Overall, this physician is specialized at which level of organization?
(a). cell (b). tissue (c). organ (d). organ system (e). organism