Linnaeus based most of his classification system on _____________.
a. cell organelles
b. biochemical comparisons
c. structural comparison
d. embryology
Ans: c. structural comparison
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Animal classification has undergone a reassessment in recent years because of:
A. Carl Linnaeus' new data B. comparisons of DNA and rRNA among different taxa C. new, genetically engineered species D. developing resistance to antibiotics E. all of the choices provided
A bacterial cell exhibiting chemotaxis must have ________.
A. fimbriae B. metachromatic granules C. a capsule D. flagella E. thylakoids
Define biodiversity
What will be an ideal response?
Hummingbirds are small birds that require a regular food supply
When hummingbirds are faced with a situation that decreases their food supply, such as a storm, which of the following adaptations would be most useful for the bird to survive such an unpredictable and short-term absence of food resources? A) shivering B) torpor C) hibernation D) burrowing into soil