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Flashcards in Chapter 3 Test Deck (30):
1

What is the benthic zone?

Depths of the sea

2

What are the 2 zones of the pelagic zone?

Neritic and oceanic

3

What is the neritic zone?

Water area between the low tide mark and edge of continental shelf

4

What is the oceanic zone?

Open water beyond continental shelf

5

What is the epipelagic zone?

Top layer that sunlight penetrates

6

What is the mesopelagic zone?

Sunlight doesn't penetrate enough to support life

7

What is the bathypelagic zone?

Deep water in open ocean

8

What is the pelagic zone?

Sea

9

What is the abyssalpelagic zone?

Ocean trenches

10

What is the hadalpelagic zone?

"Underground adobe of the dead"
Deepest water in the trenches

11

What is the benthic zone and how is it divided?

-It moves from the shore to the open ocean
-it is divided based on depth

12

What is the supra littoral zone?

Water splashes, but doesn't remain submerged

13

What is the littoral zone?

Between high and low tide mark (sometimes submerged)

14

What is the sub littoral zone?

Ocean bottom near shore

15

What is the outer littoral zone?

Ocean bottom out of edge of continental shelf

16

What is the bathyl zone?

Continental slope to deep ocean bottom

17

What is the abyssal zone?

Deep ocean bottom

18

What is the hadal zone?

Below 6,000 feet

19

What are the 3 classifications of lifestyles?

Plankton, nekton, benthos

20

What are plankton?

Groups of plants (phytoplankton) and animals (zooplankton) that exist adrift in ocean currents

21

What are nekton?

Organisms that swim
-ex: predators

22

What are benthos?

-live on bottom of sea
-often sessile (attached to bottom, no movement)

23

What are neuston?

-float on surface
-ex: Portuguese man of war

24

Subgroups of benthos?

Epifauna,epiflora, infauna

25

What is epifauna?

Animals that live in the epipelagic zone
-ex: crabs

26

What is epiflora?

Plants that live in the epipelagic zone
-ex: seagrass

27

What is infauna?

Animals that burrow into the sand
-ex: clams, sand dollars, sea pens

28

What are deposit feeders?

Feed off detritus that falls from above

29

What are suspension feeders?

Filter particles suspended in food

30

What is detritus?

Dead or decaying organisms