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In which group of organisms the cell walls form two thin overlapping shells which fit together ?

Option: 1

Euglenoids


Option: 2

Dinoflagellates


Option: 3

Slime molds


Option: 4

Chrysophytes


Answers (1)

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 Chrysophytes

  • Chrysophytes include diatoms and desmids.
  • Diatoms are mostly found in aquatic and moist terrestrial habitats as free-floating forms.
  • The body of diatoms is covered by a transparent siliceous shell called frustule.
  • The frustule is composed of two valves which fit together like a soapbox. These two valves are epitheca and hypotheca.
  • Diatoms are microscopic, eukaryotic and unicellular. They can be found in colonies also.
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Deependra Verma

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