4.5 Aquatic Ecosystems

The photic zone

• extends to the bottom of the open ocean
• extends to a depth of about 200 meters
• is deep, cold, and permanently dark
• is where chemosynthetic bacteria are the producers

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NGSS.MS-LS1-6

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The aphotic zone is

• the ocean's dark lower layer where photosynthesis cannot occur
• the sunlit upper layer of the ocean where photosynthesis occurs
• on the bottom of lakes, streams, and oceans.
• where benthos are found

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NGSS.MS-LS2-3

Which would have whales and chemosynthetic bacteria?

• coastal ocean
• intertidal ocean
• open ocean

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NGSS.MS-LS2-2

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Which zone supports the least amount of life?

• photic
• aphotic
• neritic
• ocean

Tags

NGSS.MS-LS2-1

This means the amount of salt dissolved in water.

• salinity
• salutation
• saturation
• saltiness

How do people use water from freshwater ecosystems?

• drinking
• bathing
• crop irrigation
• all of the above

Runoff fertilizer and livestock waste from farms can add to the ____ of a pond?

• nutrients
• oxygen
• pollution
• biotic factors

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NGSS.MS-LS1-5

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The algae and microscopic organisms on the surface of lakes and ponds get their food 

• by photosynthesis
• by eating
• through their gills
• through their stomata

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NGSS.MS-LS1-6

Temperature, sunlight and oxygen are examples of ____ factors.

• abiotic
• biotic

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NGSS.MS-LS1-5

What special adaptations do intertidal species have?

• to resist UV rays
• to survive exposure to air
• to survive heavy waves
• Exposure to air AND survive heavy waves

Tags

NGSS.MS-LS4-4