Land plants are thought to have arisen most directly from a(n) red algal ancestor
___________________ Indicate whether the statement is true or false.
False - green
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Which of the following statements does NOT describe an attribute of conifer resin?
A. It hardens on contact with air. B. It forms amber. C. It traps insects and other organisms. D. It is an antibiotic and prevents infections. E. It flows through ducts in the wood and leaves.
Which of the following shows the correct chronological order (geologically oldest to most recent) of near or total extinctions for the organisms listed?
A) dinosaurs, psilopsids, marine invertebrates, large mammals B) psilopsids, marine invertebrates, dinosaurs, large mammals C) large mammals, marine invertebrates, dinosaurs, psilopsids D) marine invertebrates, dinosaurs, psilopsids, large mammals
The threshold of human skin temperature at which cool or cold is perceived as pain is
A) 0°F. B) 59°F. C) -5°F. D) 32°F.
A karyotype could detect all the following conditions except _____.
A) color blindness B) Down syndrome C) Turner's syndrome D) Klinefelter syndrome