Multiple choice

The response of an organism towards a current in a fluid is known as

  1. Thermotaxis

  2. Geotaxis

  3. Rheotaxis

  4. Magnetotaxis

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Rheotaxis is a response to a current in a fluid. Positive rheotaxis is shown by fish turning to face against the current. In a flowing stream, this behaviour leads them to hold their position in a stream rather than being swept downstream. Some fish will exhibit negative rheotaxis where they will avoid currents.