Chat with AIExam 14: Plankton, Algae, and Plants
Compare and contrast two of the three phytoplankton discussed at length in this chapter (Diatoms, Dinoflagellates, and Coccolithophores).
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• Diatoms are one of the most abundant and productive phytoplankton in the ocean. They have a glass-like frustule body structure which is made up of closely fit valves. They contain yellow and brown accessory pigments.
• Dinoflagellates are single-celled autotrophs with normally two whip-like flagella. There are some species that live within tissues of other organisms. These phytoplankton are the main cause for red tides and harmful algae blooms. Some can transform chemical energy they use into light energy. This is called bioluminescence.
• Coccolithophores are autotrophs that have calcium carbonate disks covering their body. They thrive at the surface in brightly lighted areas. These are responsible for seabed oozes which can uplift like the White Cliffs of Dover
Information can be found in the section Most Phytoplankton are Photosynthetic Autotrophs.
What is usually responsible for a harmful algal bloom?
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What Zooplankton is considered a keystone species?
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What are the disadvantages of using biomass as a means to calculate primary productivity? What are some other means used to measure this productivity?
(84) What can hinder photosynthetic productivity in the open ocean?
(77) Measuring biomass is not efficient in calculating primary productivity because dense areas can have lower productivity.
(70) After a plankton bloom, nonconservative nutrients are produced in high levels.
(78) Picoplankton number 100 million individuals in a liter of seawater at all depths in the ocean.
(75) What planktonic group accounts for 80% of all photosynthesis in the tropics?
(89) A vertical migration of plankton is responsible for mixing nutrient-rich deep water with the nutrient-poor surface water.
(86) Nearshore productivity is almost always more productive than open ocean productivity.
(70) What is created due to the decomposition of falling biological debris and zooplankton activity?
(77) What season does phytoplankton peak in the northern temperate zone?
(90) A highly biological productive ocean surface appears chalky; what plankton is likely successful here?
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