Which group of mammals exhibits the widest distribution and greatest diversity?
A. Marsupials
B. Cetaceans
C. Placentals
D. Primates
E. Monotremes
Answer: C
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The ____ lineage contains the fleshy-finned fishes, with fins supported by muscles and an internal bony skeleton
a. Petromyzontoidea b. Chondrichthyes c. Actinopterygii d. Myxinoidea e. Sarcopterygii
Four of the five answers listed below are related by a similar area of the ocean. Select the exception
a. sea mounts b. pelagic province c. benthic province d. continental shelves e. hydrothermic vents
During a study session about evolution, one of your fellow students remarks, "The giraffe stretched its neck while reaching for higher leaves; its offspring inherited longer necks as a result." Which statement is most likely to be helpful in correcting this student's misconception?
A. Disuse of an organ may lead to its eventual disappearance. B. Only favorable adaptations have survival value. C. If the giraffes did not have to compete with each other, longer necks would not have been passed on to the next generation. D. Characteristics acquired during an organism's life are generally not passed on through genes. E. Spontaneous mutations can result in the appearance of new traits.
What drives the movement of soil water through a root's epidermis and cortex, to the vascular cylinder?
A. Translocation B. Pressure flow C. Casparian strip D. Osmosis E. Active transport