Kingdom Monera (prokaryotes): which feature is NOT found in members of Monera?

Difficulty: Easy

Correct Answer: Organelles

Explanation:


Introduction / Context:
“Monera” (a historical term) grouped prokaryotic organisms such as bacteria and cyanobacteria. A common exam focus is distinguishing prokaryotic from eukaryotic cell features.



Given Data / Assumptions:

  • We must find a feature not present in prokaryotes.
  • Monera = prokaryotes: no true nucleus and no membrane-bound organelles.


Concept / Approach:
Prokaryotes possess cell membranes, ribosomes, DNA (nucleoid region), and can reproduce (binary fission) and metabolize (use energy). They lack membrane-bound organelles (e.g., mitochondria, chloroplasts, ER, Golgi) and a true nucleus.



Step-by-Step Solution:

Identify organelles as membrane-bound structures. Prokaryotes lack these.Recognize that “organized cell structure” can still exist without organelles (cell wall, membrane, nucleoid, ribosomes).Reproduction and energy use are fundamental traits of life present in bacteria.


Verification / Alternative check:
Any standard biology reference states prokaryotes do not contain membrane-bound organelles, confirming the exclusion.



Why Other Options Are Wrong:

  • B: Prokaryotes are organized (cell wall, membrane, cytoplasm, ribosomes).
  • C: Bacteria reproduce asexually via binary fission.
  • D: Prokaryotes metabolize and use energy (respiration/fermentation).


Common Pitfalls:
Assuming that “organized structure” requires organelles; organization exists at multiple levels.



Final Answer:
Organelles

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