Aquatic Invertebrates Quiz

Which order does the Stonefly belong to?

• Trichoptera

• Coleoptera

• Plecoptera

• Ephemeroptera

What is the size range of a Caddisfly?

• 1/4" - 1/2"

• 1/2" - 1 1/2"

• Up to 1"

• 3/4" - 1"

Which insect has a saucer-shaped body with a raised bump on one side?

• Stonefly

• Water Penny

• Riffle Beetle

• Mayfly

What is the distinguishing feature of a Gilled Snail?

• Shell opening covered by a thin plate called operculum

• Large pinching jaws

• Flat, saucer-shaped body

• Six hooked legs on upper third of body

Which organism is described as having large pinching jaws and eight pairs of legs on the lower half of the body?

• Stonefly

• Caddisfly

• Mayfly

• Crayfish

What is the size of a Sowbug?

• 1/4"

• 1/2"

• 3/4"

• 1"

Which organism from Group Two Taxa resembles a small shrimp and swims sideways?

• A) Alderfly larva

• B) Scud

• C) Fishfly larva

• D) Water snipe fly larva

Which organism from Group Two Taxa has a long, thin, branched tail at the back and no gill tufts underneath?

• A) Alderfly larva

• B) Fishfly larva

• C) Damselfly

• D) Water snipe fly larva

Which organism from Group Two Taxa has large eyes, 6 thin hooked legs, and broad oar-shaped tails?

• A) Alderfly larva

• B) Fishfly larva

• C) Damselfly

• D) Water snipe fly larva

Which organism from Group Two Taxa has a conical head and feathery "horns" at the back end?

• A) Alderfly larva

• B) Fishfly larva

• C) Water snipe fly larva

• D) Crane fly