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Question

Which of the following is the basic unit of classification of living organisms?

This question was previously asked in
RRB NTPC 2019 CBT 1 Question Paper (8-Mar-2021) (Shift 2)
The correct answer is
Species

Classification Unit: Identifying the Basic Level

Biological classification organizes living organisms into a hierarchical system. This system ranges from broad categories to very specific ones. Understanding this hierarchy is key to identifying the fundamental unit.

Understanding Taxonomic Ranks

The main taxonomic ranks, from broadest to most specific, are:

  • Kingdom
  • Phylum
  • Class
  • Order
  • Family
  • Genus
  • Species

Determining the Basic Unit

The most specific and fundamental level in this hierarchy is the species. A species is generally defined as a group of organisms that can reproduce naturally among themselves and produce fertile offspring. All other classification levels (Genus, Family, Order, etc.) are groupings of species. Therefore, the species is considered the basic unit of classification for living organisms.

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