Macroinvertebrate Classification and Water Quality

What percentage of Earth's water is fresh water?

• 71%

• 3%

• 1%

• 97%

Which of the following animals are mentioned as using wetlands as part of their life cycle?

• Muskrats, beavers, and birds

• Fish, snakes, and deer

• Bears, wolves, and eagles

• Coyotes, rabbits, and owls

What three aspects are considered when assessing water quality?

• Temperature, depth, and flow

• Chemical, physical, and biological

• Color, odor, and taste

• Sediment, plant life, and animal size

What does the term "benthic macroinvertebrate" refer to?

• Large, vertebrate animals that live on the water surface.

• Microscopic organisms found in the water column.

• Large, invertebrate organisms that typically live on the bottom of a water body.

• Small, fish-like creatures that swim freely.

What is the initial characteristic used to classify a macroinvertebrate using the dichotomous key shown?

• Number of legs

• Presence of wings

• Presence of a shell

• Number of tails

If a macroinvertebrate does not have a shell, what is the next characteristic used for classification?

• Presence of wings

• Number of tails

• Number of legs

• Body shape

Based on the identification process shown, what type of macroinvertebrate was identified?

• Caddisfly Larva

• Mayfly Larva

• Dragonfly Larva

• Riffle Beetle Larva

What does the presence of Dragonfly Larva in a water sample generally indicate about the water quality?

• Poor water quality

• Moderate water quality

• High water quality

• Unrelated to water quality