A common adaptation of coastal plants that grow on sand dunes is
A. elevated growth rates.
B. secretion of proteinaceous threads.
C. increased transpiration of water.
D. broad leaves for enhanced photosynthesis.
E. deep roots to extract moisture.
Answer: E
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Which of the following items will not help treat or eliminate the symptoms of genetic disorders?
a. Dietary controls b. Hormone replacement therapy c. Exposure to carcinogens d. Prescription drugs e. Surgery
Members of the lineage ____ are found primarily in marine environments. Called bristle worms, they
characteristically have parapodia.
a. Hirudinea b. Polychaeta c. Monogenoidea d. Cestoda e. Oligochaeta
In the mammalian digestive system, what is the primary site of nutrient absorption?
A. large intestine B. pharynx C. stomach D. pancreas E. small intestine
Survival on land for organisms is difficult because of the problem of
A. desiccation. B. pollination. C. syngamy. D. coevolution. E. spore germination.