Macroinvertebrates and Water Quality

What is NOT true about an aquatic macro invertebrate?

• Found in water
• Big enough to be seen without a microscope
• Has a backbone
• Does not have a backbone

• Stonefly Larva

• Caddisfly Larva

• Water Penny

• Water Scorpion

What is this?

• Caddisfly Larva

• Dobsonfly Larva

• Mayfly Larva

• Water Scorpion

Measured in milligrams per liter (mg/L) or parts per million (ppm), D.O. stands for

• dissolved oligotrophs

• distended oxygen

• done over

• dissolved oxygen

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

How do benthic macroinvertebrates indicate water quality?

• If pollution-intolerant organisms are found, quality is good.
  
• If pollution-intolerant organisms not found, water is poor.
• If pollution-tolerant organisms are found, quality is good.
• If any of these are found, water is of poor quality.

Tags

NGSS.MS-LS2-1

The presence of only pollution tolerant macroinvertebrates like aquatic worms and black fly larva indicates

• good quality water

• poor quality water

• fair quality water

• swimming pool water

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

The presence of a pollution intolerant macroinvertebrate like a water penny indicates

• good quality water

• poor quality water

• fair quality water

• a polluted pond

Tags

NGSS.MS-LS2-4

Discharge entering a stream at a specific, detectable point such as a pipe or outfall.

• Point source pollution
• Non-point source pollution
• Fog
• Riparian

Tags

NGSS.MS-ESS3-3

If excessive amounts of hot water are discharged into a lake, the immediate result will most likely be...

• an increase in sewage content

• a decrease in the amount of dissolved oxygen in the lake

• an increase of mercury in the lake

• a decrease in nitrates

Tags

NGSS.MS-ESS3-3

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Rapid, dense growth of algae that robs the water of oxygen as it dies and decomposes.

• Algal bloom
• Sediment
• Point source pollution
• Non-point source pollution

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4