Passage V

Some oceanic shrimp are vertical migrators. For vertically migrating species, most of the population is found at the bottom of their depth range during the day and at the top of their depth range at night. Table 1 shows the depth ranges and water, protein, lipid, and carbohydrate content of 3 vertically migrating (vm) species of shrimp and 3 nonmigrating (nm) species of deep-sea shrimp. Figure 1 shows water temperature and oxygen partial pressure at various ocean depths.

24. On the basis of the information given, one would expect that, compared to the vertically migrating shrimp species, the nonmigrating shrimp species:

Answer and Explanation

Your Answer is

Correct Answer is J

Explanation

It can be seen from table 1 that the depth of life of vm (vertically migrating shrimp species) is about 10-600 m, and the depth of life of nm (nonmigrating shrimp species) is generally in the range of 500-1100 m;

Looking at figure 1 again, it is found that the oxygen partial pressure at 5---1100 m is lower than that at 10-600 m, indicating that nonmigrating shrimp species are more suitable for low oxygen partial pressure