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Importance of Water in Fish Life

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Questions and Answers

What is the primary cause of turbidity in pond water?

Lack of water circulation

Mineral particles suspended in the water (correct)

Plankton growth in the water

Excess organic matter entering the pond

How can one measure the total suspended solids (TSS) in pond water?

Using a Secchi disc

Observing the color of the water

Taking water samples and having them analyzed in a laboratory (correct)

Measuring the dissolved oxygen (DO) content

Why is it important to not disturb the water when taking samples to measure turbidity?

It can introduce additional organic matter into the sample

It can increase the TSS and lead to inaccurate measurements (correct)

It can change the pH of the water

It can decrease the dissolved oxygen content

What is the purpose of using a Secchi disc to measure turbidity?

To estimate the plankton turbidity in green-colored ponds Signup and view all the answers

What is the primary purpose of dissolved oxygen (DO) in pond water?

To support the decomposition of organic matter Signup and view all the answers

What is the main advantage of using an oxygen meter to measure dissolved oxygen (DO) in pond water?

It can measure DO at any depth in the water Signup and view all the answers

Why is water essential for the life of fish?

To support their breathing, eating, reproducing, and growing Signup and view all the answers

What is the measure of the alkalinity or acidity of water expressed by?

pH value Signup and view all the answers

What do values less than 7 on the pH scale indicate?

Acidity Signup and view all the answers

What causes mineral turbidity in water?

Silt and/or clay particles Signup and view all the answers

Why can plankton turbidity occur in pond water?

Due to a high content of minute plants and animals Signup and view all the answers

What causes humic turbidity in water?

Presence of humus Signup and view all the answers