Water Nuggets Practice Exam 2025 – Complete Study Resource

Question: 1 / 400

What type of organism is a bioindicator of clean water?

Periwinkle snails

Stonefly nymphs

Stonefly nymphs are considered excellent bioindicators of clean water because they have specific habitat requirements that are typically found only in pristine or high-quality aquatic environments. These organisms are sensitive to pollution, particularly to changes in water temperature, pH, and levels of dissolved oxygen. Their presence in a water body suggests that the ecosystem is healthy and supports a balanced and diverse community of aquatic life.

In contrast, species like periwinkle snails, bluegill fish, and catfish can tolerate a wider range of environmental conditions, including some polluted environments. This makes them less effective indicators of water quality, as their presence might not necessarily signal a clean or healthy ecosystem. Therefore, stonefly nymphs specifically highlight the quality of water and the ecological health of their habitats.

Get further explanation with Examzify DeepDiveBeta

Bluegill fish

Catfish

Next Question

Report this question

Download Water Nuggets Practice Exam PDF Study Guide
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy