Crab larva
Photo©CLCase

Biology 215

Regulation of H2O

Christine Case

 

 

Contractile Vacuole:
Paramecium
How do you expect saltwater to affect the rate of contraction? Freshwater?

Hemigrapsus
Hemograpsus
Hemigrapsus

Mytilus
Mytilus

   

In the graph below: Which line demonstrates that the animal is an osmoregulator?
What do you predict will happen to animal 1 in 200% seawater? Animal 2? Why did you predict this?

Hemigrapsus larvae. The eggs hatch into these planktonic larvae; note the large compound eyes.
Hemigrapsus

Photos©CLCase