Freshwater Ecosystems Test

What are organisms living on, near, or in the sediment of lakes called?

• Nektonic
• Planktonic
• Limnetic
•  Benthic

Which zone contains the most life in a lake or pond?

• Littoral zone around the shoreline
• Profundal zone in the deep and dark
• Benthic zone in the sediment
• Limnetic zone in the open lake as far as light reaches

Where would you find cattails and reeds?

• Limnetic zone
• Littoral zone
• Profundal zone
• Benthic zone

bottom-dwelling organisms

• temperature

• coral reef

• pond

• benthos

• nekton

Swamps are commonly found on

• rocky hillsides.

• flat, poorly drained land.

• mountain peaks

• bottoms of ponds or lakes

Tags

NGSS.MS-ESS2-4

NGSS.MS-LS2-1

NGSS.MS-LS2-3

What are the two main types of freshwater wetlands?

• lakes and ponds

• rivers and streams

• littoral zones and benthic zones

• marshes and swamps

Tags

NGSS.MS-ESS2-4

Which is NOT a freshwater ecosystem?

• a river
• a lake 
• an estuary
• a stream

What is man doing that is harming wetlands?

• By draining them for farmland.
• By draining them for farmland & building homes and businesses on them.
• Man is not harming the wetlands.

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-5

Which of the following are factors determine where organisms live in a freshwater lake? Select ALL that apply.

• Temperature

• Salinity

• Nutients

• Sunlight

• Carbon Monoxide

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

______ are all organisms that swim freely, independent of currents.

• Benthos

• Zooplankton

• Nekton

• Phytoplankton

Tags

NGSS.MS-LS2-3