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Five Kingdom Classification

Mediumbiology

Which feature most strongly differentiates Fungi from Plantae in Whittaker's five kingdom classification?

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About This Question

Subject
biology
Chapter
diversity in living world
Topic
five kingdom classification
Difficulty
Medium
Year
2025
Tags
Five KingdomNutrition

Solution

Correct Answer:

Mode of nutrition

  1. Whittaker's Criteria: R.H. Whittaker used cell structure, body organization, mode of nutrition, reproduction, and phylogenetic relationships.
  2. Shared Features: Both Fungi and Plantae contain eukaryotic cells, most are multicellular, and both possess cell walls.
  3. The Difference:
    • Plantae: Predominantly autotrophic (photosynthetic).
    • Fungi: Solely heterotrophic (saprophytic or parasitic). They absorb nutrients from organic matter.
  4. Cell Wall Composition: While both have walls, plants have cellulose-based walls, whereas fungi have chitinous walls. However, the 'Mode of Nutrition' is the primary taxonomic divider in the five-kingdom logic.

This medium difficulty biology question is from the chapter diversity in living world, covering the topic of five kingdom classification. It appeared in the 2025 exam.

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