Macroinvertebrates

Question 1

-Biological indicator of water quality
-Benthic macroinvertebrate
-Live in substrate of streams
-Large numbers may indicate poor water quality

Answer 1

Aquatic Worm

Question 2

Mouthpart: Piercing-Sucking
Significance: Pest

Answer 2

Midge

Question 3

Wormlike
Bulge at one end
Somewhat tolerant

Answer 3

Blackfly

Question 4

Large, plump, small appendages or prolegs:

Answer 4

Truefly

Question 5

A simple worm that is flat and thin:

Answer 5

Flatworm

Question 6

Flat and broad, segmented:

Answer 6

Leech

Question 7

A small, freshwater lobster:

Answer 7

Crayfish

Question 8

-Shrimp-like
-Narrow side to side

Answer 8

Scud

Question 9

Has six legs plus fake legs:

Answer 9

Alder Fly

Question 10

Bivalve (double shell):

Answer 10

Clam

Question 11

-Tolerant
-Opens to left

Answer 11

Lunged Snail

Question 12

-Shells open to right side
-Sensitive

Answer 12

Gilled Snail

Question 13

No gills on abdomen:

Answer 13

Most Caddisfly

Question 14

Has gills:

Answer 14

Common Netspinner Caddisfly

Question 15

-No shell
-Exactly 6 legs
-Not wormlike
-Has three thin tails and has feathery gills.

Answer 15

Mayfly

Question 16

-No tail or disc shaped larva
-Adult with hard wings

Answer 16

Beetle

Question 17

Pollution sensitive:

Answer 17

Water Penny

Question 18

-Crustacean and isopod,
-7 pair of legs
-2 pair of antennae, one much longer than other

Answer 18

Aquatic Sowbug

Question 19

Six legs plus fake legs:

Answer 19

Fish Fly

Question 20

-Legs
-Not wormlike
-Two tails
-No gills

Answer 20

Stonefly

Question 21

-Not wormlike
-More than 6 legs
-1 paddlelike (whale like)
-Pinchers and antennas

Answer 21

Crayfish

Question 22

-Not wormlike
-Six legs
-3 tails
-Feather like gills

Answer 22

Mayfly

Question 23

-Wormlike
-6 legs
-Unknown # of legs
-Makes a case around the body (using whatever is in the environment)

Answer 23

Most Caddisflies

Question 24

-Not Wormlike
-6 legs
-3 Featherlike/Paddlelike tails

Answer 24

Damselfly

Question 25

-Not wormlike -More than 6 legs -Body comes to a small point -Antennae

Answer 25

Scud

Question 26

-Wormlike -6 Legs -Tiny protrusion (foot like) -Hairy gills under the body

Answer 26

Common Netspinner Caddisfly

Question 27

-Wormlike -No legs (but may have prolegs) -Tail like projection -Large and Plump

Answer 27

Truefly

Question 28

-Not worm like -6 Legs -3 tiny tails (body comes to a point) -Wing pads, big eyes

Answer 28

Dragonfly

Question 29

-Not worm like (some circular) -6 legs -0, tail like projection -Has many different shapes

Answer 29

Beetle/Water Penny

Question 30

-Not wormlike -6+ Fake legs -2 small projections -Large body and pinchers by mouth (harmful)

Answer 30

Hellgrammite/Fishfly/Alderfly

Question 31

What bugs are sensitive? (4)

Answer 31

Mayfly Stonefly Most Caddisfly Water Penny

Question 32

What bugs are tolerant? (6)

Answer 32

Lunged Snails Black Fly Larvae Midge Larvae Aquatic Worms Flatworms Leeches

Question 33

How much oxygen in a body of water might indicate what can live in the waters:

Answer 33

Dissolved Oxygen

Question 34

Measures how much oxygen is being used up by bacteria and therefore not leaving enough for the other aquatic organisms:

Answer 34

Biological Oxygen Demand

Question 35

How much fecal matter is in the water:

Answer 35

Coliform

Question 36

Organisms need a certain range in ____ to survive, if the water is too acidic for instance, then aquatic life will die:

Answer 36

pH

Question 37

Needed for plant growth, but too much could cause eutrophication:

Answer 37

Nitrates

Question 38

Needed for plant growth, but too much could cause eutrophication:

Answer 38

Phosphates

Question 39

Determining how clear the water is will help to indicate health as well:

Answer 39

Turbidity

Question 40

So the _____ the DO, the ____ the health of the stream:

Answer 40

Higher; Better

Question 41

So the _____ the BOD, the ____ the health of the stream:

Answer 41

Lower; Better

Question 42

Is there is a direct relation between DO and BOD?

Answer 42

Yes

Question 43

Is negative coliform good or bad?

Answer 43

Good

Question 44

What's the best pH?

Answer 44

7

Question 45

The ____ the nitrate ppm the better the quality:

Answer 45

Lower

Question 46

The ____ the phosphate ppm the better the quality:

Answer 46

Lower

Question 47

The _____ the turbidity JTU, the clearer the water:

Answer 47

Lower

Question 48

What law protects the watersheds?

Answer 48

The Clean Water Act and the Multiple Use-Sustained Yield Act of 1960

Question 49

If someone found dragonflies, crayfish, clams, hellgrammites, and a couple of aquatic worms what would that tell about the water quality in this stream?

Answer 49

The stream may have a little less oxygen, contain a bit of pollution, and becoming murky.