Both root hairs and mycorrhizae _________. (Select all correct answer options.)
A. increase the surface area for nutrient
uptake
B. consume carbohydrates
C. increase the volume of soil accessible to
the plant
D. enhance the binding of the roots to the soil
A,B,C
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An acoelomate is an animal that:
A. has a coelom B. has a pseudocoelom C. has both a coelom and a pseudocoelom D. has neither a coelom nor a pseudocoelom E. has a coelom during early development but later loses it
Several genetic disorders, including Fanconi anemia and ataxia telangiectasia, are caused by mutations in ____
a. the cell wall b. mitochondrial DNA c. ribosome structure d. DNA repair genes e. DNA polymerase genes
The beautiful fall leaves get their orange and yellow colors from carotenoids
a. True b. False
Burning coal produces sulfur dioxide in the atmosphere. When combined with rain that falls into bodies of water, this leads to
A. no change in the pH level of the water. B. an increase in pH level of the water. C. a decrease in the pH level of the water. D. a greater concentration of OH- ions in the water.