Answer :

Contractile vacuole helps in removal of excess water from the body. Marine fish are exposed to high salinity. So, there is no need to remove excess water as osmotic balance between the surrounding water and fish’s body is maintained. Fresh water fish are exposed to low salt concentration. So, they require contractile vacuoles to remove excess water.

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
view all courses

In an aquarium twBiology - Exemplar

While living in aBiology - Exemplar

How do kangBiology - Board Papers

Explain ParasitisBiology - Board Papers