Members of the phylum ____ exhibit radial symmetry, with their body parts arranged regularly around a central axis
a. Porifera
b. Mollusca
c. Cnidaria
d. Platyhelminthes
e. Chordata
ANSWER: c
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The most species-rich groups of fungi are those with dikaryotic growth forms
Indicate whether the statement is true or false.
In an effort to protect and breed the California condor, a rescue program
A. captured the few remaining wild birds to breed them in captivity. B. cloned several female birds in captivity. C. captured the remaining wild birds and distributed them for display at zoos worldwide. D. developed new genetic engineering techniques. E. was able to restore habitat in much of southern California.
Which of the following does NOT describe an anaphylactic response?
A. Associated with high concentration of chemical mediators. B. All statements describe the anaphylactic response. C. Allergens do not act directly on the target organ. D. Allergen route of entry is always due to inhalation. E. Sudden respiratory and circulatory disruption that can be rapidly fatal.
What is happening here? "W" represents any molecule and e- represents an electron. W ® W+ + e-
A. oxidation of W B. reduction of W C. hydrolysis of W D. None of these choices is correct.