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Biology · BIOLOGICAL CLASSIFICATION

हिन्दी

Euglenoids lack a cell wall but possess a protein-rich flexible outer layer. What is this layer called, and how do euglenoids act nutritionally when deprived of sunlight?

  1. Mucilage sheath; act as obligate saprophytes absorbing dead matter
  2. Pellicle; behave like heterotrophs by predating on smaller organisms
  3. Chitinous coat; act as chemosynthetic autotrophs
  4. Silicified mantle; fix atmospheric nitrogen

Correct answer · Option 2

Pellicle; behave like heterotrophs by predating on smaller organisms

Explanation

Euglenoids have a protein-rich layer called pellicle making their body flexible. In the absence of sunlight, they behave like heterotrophs by predating on smaller organisms.
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