Some primitive snakes, like the ball python (Python regius), have vestigial forelimbs
a. True
b. False
ANSWER: False
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Why do peahens choose peacocks with the longest, showiest tails, when a long tail might be easily grabbed by a
predator?
What will be an ideal response?Cats excrete nitrogenous waste as ______ and birds excrete nitrogenous waste as _______
a. ammonia; uric acid b. ammonia; urea c. urea; ammonia d. urea; uric acid e. uric acid; urea
What feature of cardiac muscle helps the cells coordinate their contraction as a single unit?
A. large numbers of motor neurons B. covalent bonds between actin and myosin molecules C. intercalated disks rich in gap junctions D. fused cells with multiple nuclei
Dermatophytosis refers to fungal disease
A. that resists antibiotic treatment B. that spreads to the internal organs C. that releases enterotoxins D. of the hair, skin, and nails E. that accompanies predisposing factors