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Aquatic Producers Review

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Last updated over 2 years ago
7 questions
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1
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1
Question 4
4.
Cyanobacteria are photosynthetic organisms that produce _______ . This helped set up our atmosphere for more organisms to survive and thrive.
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1
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Question 1
1.

Sort the characteristics into Seagrasses, Mangroves, or both.

  • Must be water pollinated.
  • Started out as land flowering plants that have gradually evolved to live in sea water.
  • Leaves sweat out salt or have a waxy waterproof covering
  • Must be able to grow totally submersed;
  • Sheltered shallow water along the coast in sandy and muddy areas below the low tide level.
  • Roots and leaves totally submersed
  • Reduce effects of hurricanes
  • Sheltered, shallow, nutrient-rich water along the coast in sandy and muddy areas at the tidal level.
  • Must be securely anchored to withstand wave action and tidal currents
  • Able to grow in anoxic (low-no oxygen) waters
  • Adapted to live in high saline (salty)
  • Seagrasses (4)
  • Mangroves (4)
  • Both (3)
Question 2
2.

Sort the characteristics into Seagrasses, Mangroves, or both.

  • Reproduce Sexually –produce a flower that blooms underwater and is pollinated underwater by pollen carried in water currents.
  • Reproduce Asexually – rhizomes -horizontal stems sending out roots and shoots that occur below the sediments
  • Harmed by overfishing and Dredging
  • Reproduce Sexually – produce flowers that are pollinated. Seeds germinate while still on the plant - roots are on top. Seed falls and floats until it roots.
  • Have Pneumatophores/erect/aerial roots that form of upward appendages that are not submerged underwater so the root can get oxygen in a low oxygen environment.
  • Have Lenticels/ small pores present on aerial roots – allows for gas exchange. They can be blocked by crude oil, pollution, and attacks by parasites.
  • Harmed by deforestation for wood/timber
  • Part of food chains & webs
  • Nursery areas
  • Seagrasses (3)
  • Mangroves (4)
  • Both (2)
Question 3
3.

Cyanobacteria are aquatic producers that play a large role in the food chain.

Question 5
5.
Cyanobacteria are also called blue-green algae, but this is a bad name because they are actually more closely related to _______ .
Question 6
6.
Cyanobacteria are _______ because they do not have a nucleus.
Question 7
7.

Match the Algae to its characteristic. Then, review the Algae Practice.

Draggable itemarrow_right_altCorresponding Item
Euglenophyta
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TOP productive group -25% of all photosynthetic biomass
Rhodophyta
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Ancestor to green plants
Bacillariophyta
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Also called seaweed or kelp
Chrysophyta
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Causes red tides
Phaeophyta
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Golden Algae - Freshwater only
Dinophyta
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Largest group of algae/found the deepest
Chlorophyta
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Only algae that has both autotrophic and
heterotrophic species