Answer to Question 1ANS: C
Desiccation is the drying out of an organism. Motile animals can move towards water, but sessile
organisms must await the return of water. They trap water within their shells to keep their gills moist.
Some have a protective mucous which prevents water loss. Information can be found in the section
Examples of Marine Communities.
Answer to Question 2ANS: C
The Arctic does not have a deep scattering layer. Perhaps this is due to the abundance of nutrients in
the deep water and the waters above. Information can be found in the section Examples of Marine
Communities.
Chemoautotrophic organisms living around deep-sea hydrothermal vents.
Dispersing and sedentary stages of organisms.
Hip Typically occurs as a result of a fall; with osteoporosis, hip fractures can occur as a result o
Wave-Cut Platform and Marine Terrace
Gastric Phase of Digestion: Regulation of Gastric Juice pH and Gastric Motility
Number of Chromosomes in Selected Organisms