. In a majority of land ecosystems, most energy in producers flows directly to ____
a. decomposers
b. other plants
c. detritivores
d. herbivores
e. carnivores
ANSWER: c
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As a general rule, the small intestine of a pig or human is
(a) about 60 cm long. (b) about 1.5 m long. (c) about as long as the individual is tall (or long in the case of the pig). (d) about five times the height of the individual.
Why were the pea plant genes Mendel selected for his experiments particularly suited for the development of his laws of inheritance?
a. The remaining pea plant genes were subject to Lamarckian inheritance. b. The genes had enough genetic distance that linkage could be effectively ignored. c. The genes Mendel selected were the least susceptible to random mutation. d. Other traits he might have selected would require modern lab equipment to measure.
Which lineage of Cnidarians exist only as polyps as adults, build calcium carbonate exoskeletons, and have a mutualistic relationship with photosynthetic protists?
a. Scyphozoa b. Anthozoa c. Cubozoa d. Hydrozoa
In which type of cell do duplicated centrioles move to opposite poles, and during which part of the cell cycle does this occur?
a. in a plant cell, during prophase b. in an animal cell, during prophase c. in a plant cell, during metaphase d. in an animal cell, during metaphase