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HomeBIOLOGYUNIT-1: Diversity in the Living World

MHCET

The Living World & Biological Classification 12/28/2025

1. Biological Classification - Kingdom Monera

Shapes of Bacteria:

  • Coccus: Spherical
  • Bacillus: Rod-shaped
  • Vibrio: Comma-shaped
  • Spirillum: Spiral

Comparison of Viroids and Viruses:

Feature Virus Viroid
Protein Coat Present (Capsid) Absent
Genetic Material DNA or RNA Only RNA
Size Small Very Small (Smaller than Virus)

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