One morphological feature of modern cetaceans is a vestigial pelvic girdle. If it is determined that the cetacean lineage diverged from the artiodactyls' lineage after the divergence of pigs and other artiodactyla
, then the vestigial pelvic girdle of cetaceans should be considered a shared _____.
A) ancestral character of the cetartiodactyls
B) derived character of the cetartiodactyls
C) ancestral character of the cetaceans
D) derived character of the cetaceans
Answer: D
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a. crash b. have a larger proportion of older individuals c. remain stable d. decrease e. increase
Why might a seed be covered in prickly hooks?
A) To aid in seed dispersal B) To allow it to float on water C) To keep it from being eaten D) To help the seed germinate E) To attract insects
Lactobacillus grows optimally at ________ pH.
A. very acidic B. neutral C. slightly acidic D. slightly alkaline
The term ________ involves the study of the blood components that fight infection
A) antisepsis B) chemotherapy C) etiology D) serology E) bioremediation