Flea crawfishes: like shrimps
Water woodlouses: like a normal woodlouse
Movement of the animals
Flea crawfishes: like dogs in water.
Water woodlouses: They move with their feet.
Put a sheet of a tree in the Petri dish to the animals
How is the behaviour of the animals changing?
The animals move immediately under the sheet.
The picture shows how the animals move under the sheet.
Conclusion of this observation
The animals do not like the light because they move immediately under the sheet, where it is dark.
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