Fresh water fish have the same osmoregulatory mechanisms as the marine fish.
a. true
b. false

False

Explanation:

The osmoregulatory mechanisms in fishes are the gills, In freshwater, the gills pump in sodium ions, but in the ocean, they need to pump sodium and chloride ions out; to keep the osmoregulation.

The marine fishes gills have a particular type of cells called chloride cells.  The membrane of these cells has a sodium and potassium pump that regulates the amount of sodium and potassium that comes and goes inside the cell.

the form of energy changes and the total energy increases0l

endo:

regulates body hormones, aldosterone, vasopressin

neural:

signal, regulates body using electric signals, reflex

endo has to do with hormones; aldosterone and vasopressin are both hormones. i also had this question and got it right : d