In biology class one day, Mrs. Chabon wrote six physiological functions on the board. Then, she asked groups of students to each choose the three functions that are purposes of the excretory system. These are the lists they made.Group 1: maintaining pH level of blood; transporting hormones throughout the body; regulating growthGroup 2: removing wastes from the body; digesting solid foods; maintaining salt and water balanceGroup 3: maintaining salt and water balance; maintaining pH level of blood; regulating growthGroup 4: removing wastes from the body; maintaining pH level of blood; maintaining salt and water balanceWhich group correctly listed the functions of the excretory system?
The excretory system removes wastes and helps maintain the body’s internal balance. It regulates the amount of salt and water in the body and helps keep blood pH within a healthy range. Group 4 lists all three functions; the other groups include functions such as growth regulation or digestion, which are not purposes of the excretory system.
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