Question

how would the contractile vacuole of a freshwater amoeba respond if the organism was placed in seawater? with more contractions with fewer contractions the contractions would suddenly cease with the same frequency of contractions

Explanation:

The contractile vacuole in a freshwater amoeba expels excess water that enters the cell due to osmosis. Seawater is hypertonic to the amoeba's cytoplasm. So, less water would enter the amoeba, reducing the need for the contractile vacuole to contract.

Answer:

with fewer contractions