In the moss life cycle, ____
a. gametophytes originate within, and are dependent upon, sporophytes
b. sporophytes originate within, and are dependent upon, gametophytes
c. both gametophytes and sporophytes are independent from each other and are equally dominant
d. gametophytes are free-living and photosynthetic, but are replaced by a dominant sporophyte generation
e. gametophytes are photosynthetic and partially independent from the sporophytes
ANSWER: b
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The researcher determines that an average nest incubation temperature of 32 – 33?C results in the birth of male crocodiles, while higher and lower incubation temperatures result in female crocodiles. What is the most likely explanation for this phenomenon?
A. Since this phenomenon is influenced by an external stimuli (temperature), it cannot be attributed to changes in either the genome or the proteome. B. Incubation temperature changes both the crocodilian genome and proteome. C. Incubation temperature results in a change in the crocodilian proteome. D. Incubation temperature results in a change in the crocodilian genome.
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A. high B. normal C. low
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A certain species has offspring that require a very large amount of parental care. Predict their mating system.
A. Polyandrous B. Polygynous C. Monotonous D. Monogamous