Multiple choice question - choose multiple answers

Instruction:

Jul-2021

Read the text and answer the question by selecting all the correct responses. You will need to select more than one response.

Fast-swimming Fishes

There are adaptations that increase the amount of forward thrust as well as those that reduce drag. Again, these fishes are the envy of engineers. Their high, narrow tails with swept-back tips are almost perfectly adapted to provide propulsion with the least possible effort. Perhaps most important of all to these and other fast swimmers is their ability to sense and make use of swirls and eddies (circular currents) in the water. They can glide past eddies that would slow them down and then gain extra thrust by "pushing off" the eddies. Scientists and engineers are beginning to study this ability of fishes in the hope of designing more efficient propulsion systems for ships.

According to the passage, one of the adaptations of fast-swimming fishes that might be used to improve the performance of ships is these fishes' ability to

a) swim directly through eddies.b) make efficient use of water currents.c) cover great distances without stopping.d) gain speed by pushing off the swirls.

0/0

AnswersDiscussion

Frequency:

Source:

Order: