Multicellular Primary Producers

Question 1

Macroalgae produce approximately ____ of the oxygen in our atmosphere,

Answer 1

25%

Question 2

what is structurally more complex and have more elaborate
reproduction than unicellular algae

Answer 2

macroalgae

Question 2

1Kelp general structure. bottom to top

Answer 2

rock or hard sediment

Question 2

marine microbes produce __of the oxygen in our atmosphere

Answer 2

50%

Question 2

2Kelp general structure. bottom to top

Answer 2

holdfast (roots)

Question 3

4Kelp general structure. bottom to top

Answer 3

pneumatocyst (round structure)

Question 3

3Kelp general structure. bottom to top

Answer 3

stipe (vines)

Question 4

5Kelp general structure. bottom to top

Answer 4

blades (leaves)

Question 5

blades, pneumatocyst, and stipe

Answer 5

thallus

Question 6

what is 1000x more dense than air

Answer 6

seawater

Question 7

states that a body immersed in fluid is buoyed up by a force equal to the
weight of the displaced liquid

Answer 7

Archimedes Principle

Question 8

the body immersed in the fluid is __ up by a force equal to the weight of the __

Answer 8

fluid; displaced liquid

Question 9

Buoyancy of seawater allows marine organisms to have

Answer 9

reduced structural materials

Question 10

Buoyancy of seawater allows marine organisms to have the
presence of

Answer 10

planktonic communities

Question 11

Chlorophyta

Answer 11

green algae

Question 12

Rhodophyta

Answer 12

red algae

Question 13

Coralline red algae are important

Answer 13

reef builders

Question 14

Phaeophyta

Answer 14

brown algae

Question 15

Sargassum

Answer 15

brown algae community, floats in the Gulf of Mexico and Caribbean Sea

Question 16

Invasive species of macroalgae are often transported via

Answer 16

ballast water, in aquaculture, the
aquarium trade

Question 17

Invasive species of macroalgae are often transported as__ on vessels.

Answer 17

fouling growth

Question 18

Caulerpa

Answer 18

ex: a genus of macroalgae invasive to the Mediterranean.

Question 19

True vascular plants that live completely underwater in the ocean are

Answer 19

seagrasses

Question 20

sediment stabilizers, habitat for marine life, tourism

Answer 20

Seagrasses are valuable

Question 21

manatees and green sea turtles

Answer 21

eat seaweed

Question 22

eutrophication, dredging, boating, and commercial fishing

Answer 22

Seagrasses threats

Question 23

Plants that grow well in saltwater

Answer 23

halophytes

Question 24

what cant Saltmarsh grasses tolerate for long

Answer 24

complete submersion

Question 25

Spartina alterniflora

Answer 25

smooth cordgrass

Question 26

smooth cordgrass is an important species of what

Answer 26

saltmarsh grass in Louisiana

Question 27

One of the most important saltmarsh zones for juvenile marine organisms is the

Answer 27

edge

Question 28

subsidence, erosion, sea-level rise, and sediment starvation

Answer 28

lost of Louisiana coastal wetlands

Question 29

trees and shrubs adapted to living in seawater and brackish water along tropical and
subtropical coasts.

Answer 29

Mangroves

Question 30

Mangrove seedlings

Answer 30

propagules

Question 31

Mangrove seedlings propagules

Answer 31

germinate on the tree

Question 32

what is expanding to replace smooth cordgrass in South Louisiana

Answer 32

black mangroves