Unit 5- Examples of marine ecosystems Questions and Answers
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Course
SPLA
Institution
SPLA
Unit 5- Examples of marine ecosystems Questions and Answers
epipelagic zone (photic zone)
Ocean: The pelagic environment from the surface to 200 m. Plenty of sunlight to promote photosynthesis.
mesopelagic zone (twilight zone)
Ocean: the pelagic environment between 200 and 1000 m; light i...
Unit 5- Examples of marine ecosystems
Questions and Answers
epipelagic zone (photic zone) - answer Ocean: The pelagic environment from the
surface to 200 m. Plenty of sunlight to promote photosynthesis.
mesopelagic zone (twilight zone) - answer Ocean: the pelagic environment between
200 and 1000 m; light intensity too low for photosynthesis, many organisms have eyes
adapted to low light levels
Bathypelagic Zone (Midnight Zone) - answer Ocean: The pelagic environment from a
depth of 1000 m to 4000 m. No sunlight at all so organisms need to make their own
light.
abyssopelagic zone - answer The pelagic environment from a depth of
approximately 4000m to 6000 m. No sunlight at all.
benthic zone - answer The zone of the ocean from 6000m and deeper
Benzos - answer the community of organisms found in the benthic zone
ecosystem services - answer benefits people obtain from ecosystems, including
food, flood regulation,vclimate control and water regulation
Carbon sink - answer A natural environment that absorbs and stores more carbon
dioxide from the atmosphere than it releases, which offsets greenhouse gas emissions.
cnidarians - answer marine animals that capture food using stinging cells
cnidocytes - answer stinging cells that cover the tentacles of cnidarians
polyp - answer non-moving, cup-like stage of cnidarians
nematocyst - answer the harpoon-like organelle within a cnidocyte that contains a
toxin to be delivered to the prey
basal plate - answer lower part of the coral calyx that separates the polyp from the
substrate
calyx - answer the stony cup in which a coral polyp lives its life
theca - answer walls of the calyx
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