Multiple choice

Which of the following is a parasitic alga?

  1. Cephaleuros

  2. Chara

  3. Cladophora

  4. Zostera

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A Correct answer
Explanation

Cephaleuros is a parasitic green alga that causes red rust disease on various economic plants including tea, coffee, mango, and pepper. It penetrates host tissues and derives nutrients, causing characteristic red-colored pustules on leaves. Chara and Cladophora are free-living, non-parasitic green algae found in freshwater. Zostera is a marine seagrass (a flowering plant, not an alga) and is not parasitic.

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