A number of trends have been identified that have become progressively more pronounced as nervous systems evolved greater complexity. From the list below, choose the item that is not one of these trends.
A. elaboration of the brain
B. more sophisticated sensory systems
C. differentiation of sensory and motor nerves
D. All of these are among the major evolutionary trends.
Answer: D
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Island biogeography predicts that a single large area would have higher biodiversity than several small areas. However, in practice, several small areas could have an advantage for what reason(s)? Check all that apply.
_____ Facilitating the spread of disease _____ Decreasing extinction risk from natural disasters _____ Being less expensive _____ Containing more habitat types _____ Minimizing edge effects
A taxon that includes only birds and bats, two clades of vertebrates capable of flight, is considered ____
a. paraphyletic b. polyphyletic c. monophyletic d. complete e. incomplete
Which of the following pairs is mismatched?
A) Penicillin — antibiotic B) Chemotherapy — treatment of disease C) Normal microbiota — harmful D)Pathogen — disease causing
The aquatic plant Elodea is commonly used to study photosynthesis. You put some Elodea in a test tube filled with water containing radiolabeled oxygen (18O), shine light on the test tube, and measure the rate of photosynthesis by counting oxygen bubbles released. At the end of your experiment, you would find the most 18O in
A. glucose. B. carbon dioxide. C. O2. D. in water for the most part, as water is not used in photosynthesis. E. in ATP.