Which of the following algae has a filamentous structure?

  • A
    Nostoc
  • B
    Chlamydomonas
  • C
    Spirogyra
  • D
    Diatoms

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Which of the following is an algal parasite?

Match the following columns:
Column-$I$Column-$II$
$A$. Blue-green algae$i$. Spirogyra
$B$. Unicellular algae$ii$. Nostoc
$C$. Filamentous algae$iii$. Volvox
$D$. Colonial algae$iv$. Chlamydomonas

Pyrenoids are found in which of the following parts of $Spirogyra$?

Stomata are not found in

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