Respuesta :
Diatoms are unicellular algae with a silica shell as an armour. They are primary producers in aquatic systems, and many of them have intracellular cyanobacteria as symbionts.
So, option an is the correct answer. Cyanobacteria.
Cyanobacteria, a kind of photosynthetic bacteria, is the right answer. Cyanobacteria is a form of photosynthetic bacteria that may be found in both saltwater and freshwater environments, and it is a frequent species of diatom.
Diatoms, which are mainly found in deep water environments, have a silicate exoskeleton. Toxins produced by cyanobacteria can harm numerous regions of the body.
Cyanobacteria of various species can create toxins that harm the liver (hepatotoxins), disrupt the central nervous system (neurotoxins), and produce toxic alkaloids that harm the kidneys and gastrointestinal tract.
Learn more about to cyanobacteria visit here:
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Full Question :
Which of the following is most closely related to DIATOMS?
Select one:
a. Cyanobacteria, a type of photosynthetic Bacteria
b. Methanococcus, a type of Archaea
c. Giardia (a parasitic Diplomonad), a deeply branching Eukaryote.
d. Aquifex, a type of Bacteria
e. Humans
