Which plant has a jointed hollow stem with reduced megaphylls?
a. moss
b. horsetail
c. club moss
d. whisk fern
e. hornwort
b
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Before the evolution of complex nervous systems, animals with very simple nervous systems could engage in the following behaviors, except:
A. finding a mate. B. obtaining food. C. choosing a suitable habitat. D. regulating internal body functions. E. sensing chemical cues in the environment.
The plasma membrane of eukaryotes contains all of the following EXCEPT
A. sterols. B. peptidoglycan. C. sphingolipids. D. phosphoglycerides.
How did researchers establish the connection between chimpanzees and humans? How did researchers establish the connection between chimpanzees and humans?
Bones are organs with more than one tissue type present. Which of the following is NOT found as part
of any bones?
a. blood vessels b. bone tissue c. adipose tissue d. nerves e. brown marrow