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Multiple Choice
Which group of organisms is responsible for the phenomenon known as 'red tide'?
A
Cyanobacteria
B
Green algae
C
Dinoflagellates
D
Diatoms
Verified step by step guidance
1
Understand the term 'red tide': It refers to a natural phenomenon where the water appears red due to the proliferation of certain microorganisms.
Identify the organisms involved: Red tides are primarily caused by a type of algae known as dinoflagellates.
Differentiate between the options: Cyanobacteria, green algae, and diatoms are different types of microorganisms, but they are not typically responsible for red tides.
Recognize the characteristics of dinoflagellates: These are a group of flagellate protists, and some species can produce toxins that affect marine life and humans.
Conclude that dinoflagellates are the correct answer as they are the primary cause of red tides, often due to their rapid growth and toxin production.