Aquatic Ecosystems Quiz
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Questions and Answers

Fish require water to breathe, eat, reproduce, and grow.

True

Pond water contains only dissolved substances with no suspended particles.

False

A pH of 7 in water indicates acidity.

False

Mineral turbidity is caused by high silt and clay content in water.

<p>True</p> Signup and view all the answers

Plankton turbidity is caused by the presence of humus in water.

<p>False</p> Signup and view all the answers

Humic turbidity results from a high concentration of humus in the water.

<p>True</p> Signup and view all the answers

Dissolved oxygen is not essential for most living organisms for their respiration.

<p>False</p> Signup and view all the answers

Secchi disc is a complex tool used to measure turbidity in ponds.

<p>False</p> Signup and view all the answers

Green-colored ponds are particularly suitable for using the Secchi disc to estimate plankton turbidity.

<p>True</p> Signup and view all the answers

The passage of atmospheric oxygen into water happens at a fast rate.

<p>False</p> Signup and view all the answers

Chemical methods for measuring dissolved oxygen involve the use of expensive devices.

<p>False</p> Signup and view all the answers

Calibrating the oxygen meter regularly is not necessary to ensure accuracy.

<p>False</p> Signup and view all the answers

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