Multiple choice

The pink coloured algae characterised by a hard thallus is

  1. Coralline algae

  2. Claudea

  3. Plocamium

  4. Rhodoliths

  5. Nori
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A Correct answer
Explanation

Coralline algae are red algae in the order Corallinales. They are characterised by a thallus that is hard because of calcareous deposits contained within the cell walls. The colours of these algae are most typically pink, or some other shade of red, but other species can be purple, yellow, blue, white or gray-green.

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