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What is plankton?
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What connects plankton in categories?
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Marine Science Ch 14

Ch 14 Review MCs

QuestionAnswer
What is plankton? Drifting or weakly swimming organisms suspended in water
What connects plankton in categories? an ecological connection; size of organism
What research vessel carried out the first large-scale plankton study? Meteor 1925-1926
What is included in a quantitative analysis of plankton? an estimate of the sampled volume of water and a count of the the organisms
What is required to study very small plankton? the concentration of water samples by centrifugation or entrapment by a filter
Why are phytoplankton critical for marine life? They bind to at least 35 billion metric tons of carbons into carbohydrates ; contribution to food webs and their generation of large amounts of atmospheric oxygen through photosynthesis
Which plankton are considered microplankton? diatoms, dinoflagellates, and invertebrate larvae
What is the smallest form of plankton? femtoplankton
What planktonic group accounts for 80% of all photosynthesis in the tropics? picoplankton
What is a microecosystem? A community operating on the smallest possible scale
What is the most productive photosynthetic plankton apart from Cyanobacteria? diatoms
What is a frustule? A reference to the patterns of perforations through the diatom's rigid cell walls
What makes light absorption in diatoms more effective than just using chlorophyll? accessory pigments
What allows diatoms to expand in size during reproduction? the auxospore
What photosynthetic organism is found in the tissues of coral? dinoflagellates
What is usually responsible for a harmful algal bloom? species of dinoflagellates
A highly biological productive ocean surface appears chalky; what plankton is likely successful here? coccolithophores
What do researchers use to directly measure the rate of productivity? carbon-14
What new method(s) is/are being used to calculate productivity by estimating the chlorophyll? remote sensing and orbiting satellites
What is essential in the restoration and continuation of photosynthetic productivity in the ocean? upwelling
What can hinder photosynthetic productivity in the open ocean? iron ; minerals and light
Why is photosynthesis inhibited at the very top layer of the ocean surface? too much light
What is true of compensation depth? -usually corresponds to te depth to which about 1% of surface light penetrates -marks the bottom of the euphotic zone changes with sun-angle, turbidity, surface turbulence, and other factors -production equals consumption
What changes the compensation depth? sun-angle, turbidity, surface turbulence, and other factors
Where is phytoplankton the most productive? near the continents or the temperate zone
What season does phytoplankton peak in the northern temperate zone? fall
What is the most abundant larger zooplankton? copepods
What kind of plankton remains planktonic for its entire life? holoplankton
What Zooplankton is considered a keystone species? krill
What is created due to the decomposition of falling biological debris and zooplankton activity? oxygen minimum zone
Created by: Koolia101
 

 



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