Which type of skeleton is found in a starfish?
a. cartilaginous
b. exoskeleton
c. hydrostatic
d. chitinous
e. endoskeletal
ANSWER: e
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Four of the five answers listed below are related by a common polluting action. Select the exception
a. power generated by coal b. power generated by water c. power generated by oil d. power generated by gas e. use of motor vehicles
Roots exhibit negative gravitropism whereas stems exhibit positive gravitropism.
a. true b. false
What is the correct way to open an agar plate to either remove a sample or to inoculate?
What will be an ideal response?
A rancher genotypes all of her 150 head of cattle. In her herd, 25 are A1A1, 75 are A1A2, and 50 are A2A2
Assuming there is random mating, no selection, no mutation, and no new cows are in-troduced into the population, what is the probability that the A1 allele will be fixed? a. 0 b. 0.0127 c. 0.4167 d. 0.6588 e. 1