Organisms that use organic molecules as their source of carbon are called
A. chemotrophs.
B. organoheterotrophs.
C. heterotrophs.
D. autotrophs.
C
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Chicken legs are made up of __________ which
accounts for why they can run long distances. a. slow-twitch fibers b. fibrous connective tissue c. polymerated red blood cells d. fast-twitch fibers e. all of these
Which phylum categorizes the largest known floating siphonophore colonies?
a. Anthozoa b. Cubozoa c. Hydrozoa d. Scyphozoa
Uplift and formation of a mountain range divides a freshwater snail species into two isolated populations. Erosion eventually lowers the mountain range and brings the two populations together again, but when they mate, the resulting hybrids all produce sterile young. This scenario is an example of
a. sympatric speciation b. punctuated equilibrium c. allopatric speciation d. the gradual model of speciation
__________ are thickened underground stolons used
for nutrient storage. a. Stolons b. Rhizomes c. Bulbs d. Corms e. Tubers