Which of the following animals lack a "true"
coelom?
a. flatworms only
b. annelids only
c. roundworms only
d. flatworms and annelids
e. flatworms and roundworms
E
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The extracellular ground substance of the matrix is composed of ____
a. cartilage b. polysaccharides c. lipids d. proteins e. elastin
In many respects, the events of prophase seem to be the reverse of those occurring in
____________________. What will be an ideal response?
Another name for bovine spongiform encephalopathy (BSE) is ______________ Fill in the blank(s) with the appropriate word(s)
TRAIT SPECIESABCDE101111200111310101401111500001610101 The table shows the distribution of traits (A-E) in six extant species (1-6). A "0" indicates the ancestral condition, and a "1" indicates the derived condition. Which trait is least informative of phylogenetic relationships within the group?
A. A B. B C. C D. D E. E