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Difficulty: EasyTaxonomy and Classification

An organism is identified as multicellular, heterotrophic by absorption, and possessing cell walls composed of chitin. Into which biological kingdom is this organism classified?

  1. A
    Plantae
  2. FungiAnswer
  3. C
    Animalia
  4. D
    Eubacteria

Answer

Fungi
Kingdom Fungi consists of eukaryotic organisms that absorb nutrients from organic matter and maintain rigid cell walls made of chitin.

Step-by-Step Solution

1
Examine the diagnostic cell wall and nutritional characteristics described in the stem
The organism is multicellular, has cell walls containing chitin, and acquires nutrients through external absorption.
Taxonomic kingdom classification is fundamentally determined by cellular organization, cell wall biochemistry, and mode of nutrition.
2
Match these defining traits to the correct biological kingdom
Absorptive heterotrophy combined with chitinous cell walls is the defining hallmark of Kingdom Fungi.
Kingdom Plantae contains autotrophs with cellulose walls, Kingdom Animalia contains ingestive heterotrophs lacking cell walls, and Eubacteria are unicellular prokaryotes.

Key Concept

Diagnostic characteristics of Kingdom Fungi (chitin cell walls and absorptive heterotrophy)
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Topics

Taxonomy and Classification

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