Passage II
Asemichthys taylori is a predatory saltwater fish that sometimes uses its teeth to punch holes in the shells of its prey, which are ingested (eaten) shell and all. Scientists collected 176 A. taylori and placed them in a holding tank. All shells from the fecal waste of the A. taylori were collected for the next 48 hr. Table 1 shows the number of shells ingested by the A. taylori, the number of survivors (ingested shells that contained living, undigested organisms), and the percent of shells with punched holes for 3 main groups of prey: gastropods, bivalves, and hermit crabs. Table 2 shows the same information for 4 types of gastropods.
11. Based on Table 2, is it possible that all of the Alvinia with unpunched shells survived ingestion?
Your Answer is
Correct Answer is C
Explanation
Looking at table 2, the shells punched (%) corresponding to Alvinia is 79.2%, then unpunched (%)=1-79.2=20.8%, and there are 11 survivors, that is, the survivors (%) is 11/101≈ 11%.
20.8%≠11%, so the statement in the question stem is impossible