The physiological behavior of animals in a laboratory setting is not always consistent with their physiological behavior in the wild.
2. It can be inferred from the passage that by describing the Weddell seal as preparing for the worst , biologists mean that it
prepares to remain underwater for no longer than twenty minutes
exhibits physiological behavior similar to that which characterizes dives in which it heads directly for its prey
exhibits physiological behavior similar to that which characterizes its longest dives in the wild.
begins to exhibit predatory behavior
clears the lactic acid from its blood before attempting to dive
3. The passage suggests that during laboratory dives, the pH of the Weddell seals blood is not adversely affected by the production of lactic acid because
only those organs that are essential to the seals ability to navigate underwater revert to an anaerobic mechanism.
the seal typically reverts to an anaerobic metabolism only at the very end of the dive
organs that revert to an anaerobic metabolism are temporarily isolated from the seals bloodstream
oxygen continues to be supplied to organs that clear lactic acid from the seals bloodstream
the seal remains submerged for only short periods of time
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