Question

Osmoregulators expend a considerable amount of energy to maintain a constant internal environment, in response to changes in the surroundings.

• A. True
• B. False

Answer 1

The correct option is A True

Most aquatic organisms may either be osmoconformers or osmoregulators. As the names indicate “conform” indicates that they are naturally in balance with the surroundings, while “regulate” indicates that they need to consciously regulate/control osmolarity, while osmoconformers maintain an internal environment that is isosmotic with the surrounding water without having to expend much energy, osmoregulators have to spend a considerable amount of energy to maintain osmotic balance between body fluids and the surrounding water. Most freshwater fish and invertebrates are examples of osmoregulators.