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Temperature Variations in Freshwater Environments

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Temperature Variations in Freshwater Environments

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Questions and Answers

How do decreasing temperatures impact aquatic organisms?

Have no effect

Increase metabolism

Lead to a fall in metabolism (correct)

Result in a higher rate of food consumption

What effects do the extremes of lower and higher temperatures have on aquatic organisms?

Cause lethal effects (correct)

Enhance their breeding periods

Stimulate biological phenomena

No effect

How do fluctuations in temperature of aquatic media impact freshwater biota?

Prevent hibernation

Stop breeding periods

Initiate hibernation and gonadial activation (correct)

Do not affect biological phenomena

Based on temperature tolerance, what are most freshwater organisms classified as?

Stenothermic Signup and view all the answers

What type of temperature tolerance do euthermic organisms have?

Wide range of temperature tolerance Signup and view all the answers

In a polluted water environment with an average depth of 1.5 meters, what was the lowest recorded night time temperature?

26.6°C Signup and view all the answers

What is the significance of Thermal stratification in water bodies?

It helps maintain a stable temperature throughout the water column. Signup and view all the answers

Which type of lakes is characterized by surface temperatures always being maintained above 4°C?

Tropical lakes Signup and view all the answers

What is the function of the Thermocline layer in thermal stratification?

It is a column layer with temperatures at 4°C. Signup and view all the answers

What type of water environment exhibits more conspicuous differences between day and night temperatures?

Polluted water with an average depth of 1.5 meters Signup and view all the answers

What is a unique feature of tropical lakes as per their temperature relations?

Surface temperatures are always maintained above 4°C. Signup and view all the answers