Photo AI
Construct a table to distinguish between the environmental conditions experienced by marine and fresh water fish, and the resulting urine production of each fish. - HSC - SSCE Biology - Question 17 - 2007 - Paper 1
Question 17
Construct a table to distinguish between the environmental conditions experienced by marine and fresh water fish, and the resulting urine production of each fish.
Worked Solution & Example Answer:Construct a table to distinguish between the environmental conditions experienced by marine and fresh water fish, and the resulting urine production of each fish. - HSC - SSCE Biology - Question 17 - 2007 - Paper 1
Step 1
Environmental Conditions Experienced by Marine Fish
Answer
Marine fish live in saltwater environments, which have a higher osmotic pressure than their body fluids. This causes water to move out of their bodies through osmosis, leading to dehydration. As a result, marine fish typically produce small volumes of highly concentrated urine to conserve water.
Step 2
Environmental Conditions Experienced by Freshwater Fish
Answer
Freshwater fish inhabit environments with lower osmotic pressure than their body fluids. They tend to take in excess water due to osmosis, which can dilute their body fluids. Therefore, freshwater fish produce large volumes of dilute urine to eliminate the surplus water.
Step 3