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Mbio-Module 12

QuestionAnswer
Benthos Marine organisms that live on the sea bottom
Nekton Marine organisms that swim strongly enough to move against the ocean current
Plankton Marine organisms that cannot swim strongly enough to move against the ocean current
Continental shelf a gently sloping area, starting at a point near land just below the low tide mark
Shelf break The outer edge of the continental shelf
Subtidal Beneath water at all times, regardless of tide
soft-bottom shelf communities continental shelf community with a soft substrate
hard-bottom shelf communities continental shelf community with a hard substrate
Infauna Creatures that live in the substrate
Epifauna live on the surface of the bottom
Unvegetated bottom bottom that has no vegetation
Vegetated bottom bottom that has lots of vegetation
Meiofauna Microscopic organisms that live between the sediment particles
Suspension feeders organisms that burrow into the substrate and feed on suspended bits of food in the water
Scavengers Organisms that feed on dead organisms that they find
Turtle grass found in tropics
Eelgrass found in temperate
The two major categories of hard-bottom subtidal communities are... rocky-bottom communities and kelp beds
Kelps are large, brown seaweeds
When kelps aren't tall enough to reach the surface and create a canopy they are called a kelp bed
When kelps are tall enough to reach the surface and create a canopy they are called A kelp forest
Kelps are plants: True or False? False
Instead of roots, kelps have holdfasts
Instead of stem kelps have... Stipes
Instead of leaves, kelps have... Blades
Hollow floats located at the base of the blades are called Pneumatocysts
Kelps need... cold, rich water and a hard substrate
Kelps have what is called an... alternation of generations
The dark, dimly lit area beneath kelp is called an understory
Little bits of kelp that have broken off are called Drift kelp
Sea urchins kill kelp by gnawing of the bottom of the stipe, near the substrate, causing the rest of the kep to float away
Created by: akikoandpoog
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