Because whales breathe via lungs, have a little hair when born, and nurse their young, these ____ characters allow us
to classify them as mammals.
a. shared derived
b. share ancestral
c. polyphyletic
d. homoplastic
e. homologous
a
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Caecelians, such as the one pictured here, are a type of:
1.Amphibian
2.Crocodilian
3.Reptile
4.Nematode
Fred Griffith’s experiments with two strains of
Streptococcus pneumoniae a. resulted in a vaccine against bacterial pneumonia. b. demonstrated that rough (R) bacteria cause pneumonia. c. provided evidence that genetic material from one bacterial strain can be transferred to that of another strain. d. demonstrated that mice can transform harmless bacteria into pathogenic bacteria. e. demonstrated that a harmless, smooth bacterial strain can be transformed into a lethal, rough bacterial strain.
Mycorrhizae surround and infiltrate the ________ of vascular plants
A) roots B) leaves C) seeds D) flowers E) stems
What is the currently recognized classification scheme?
A) two-kingdom system B) five-kingdom system C) biogeography D) three-domain system