In the experiment, the experimenter heated from one end a test tube with ciliates to a certain temperature and observed

In the experiment, the experimenter heated from one end a test tube with ciliates to a certain temperature and observed the movement of ciliates into less heated layers of water. Give another example of a similar phenomenon in animals.

Hydra squeezing when touched, OR motor reaction of the amoeba in response to the addition of salt crystals to the solution (chemotaxis).

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