Chapter 3 Test Flashcards
(30 cards)
What is the benthic zone?
Depths of the sea
What are the 2 zones of the pelagic zone?
Neritic and oceanic
What is the neritic zone?
Water area between the low tide mark and edge of continental shelf
What is the oceanic zone?
Open water beyond continental shelf
What is the epipelagic zone?
Top layer that sunlight penetrates
What is the mesopelagic zone?
Sunlight doesn’t penetrate enough to support life
What is the bathypelagic zone?
Deep water in open ocean
What is the pelagic zone?
Sea
What is the abyssalpelagic zone?
Ocean trenches
What is the hadalpelagic zone?
“Underground adobe of the dead”
Deepest water in the trenches
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
What is the supra littoral zone?
Water splashes, but doesn’t remain submerged
What is the littoral zone?
Between high and low tide mark (sometimes submerged)
What is the sub littoral zone?
Ocean bottom near shore
What is the outer littoral zone?
Ocean bottom out of edge of continental shelf
What is the bathyl zone?
Continental slope to deep ocean bottom
What is the abyssal zone?
Deep ocean bottom
What is the hadal zone?
Below 6,000 feet
What are the 3 classifications of lifestyles?
Plankton, nekton, benthos
What are plankton?
Groups of plants (phytoplankton) and animals (zooplankton) that exist adrift in ocean currents
What are nekton?
Organisms that swim
-ex: predators
What are benthos?
- live on bottom of sea
- often sessile (attached to bottom, no movement)
What are neuston?
- float on surface
- ex: Portuguese man of war
Subgroups of benthos?
Epifauna,epiflora, infauna
