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What was the main basis for separating prokaryotes and eukaryotes in Whittaker’s classification?

Answer and explanation

Correct answer: Presence or absence of a nuclear membrane

The correct answer is B. Prokaryotic cells, such as those placed in Monera, do not have a membrane-bound nucleus. Their genetic material lies in a nucleoid region. Eukaryotic cells have a true nucleus surrounded by a nuclear membrane, as well as several membrane-bound organelles. This fundamental cellular difference was a major basis for separating the two groups. Option A is not correct because both prokaryotes and eukaryotes may have cell walls, although their composition can differ. Option C, nutrition, varies within both groups. Option D, reproduction, also shows variation and is not the defining separation. Memory cue: prokaryote = no true nucleus; eukaryote = true nucleus.

Related tags

Whittaker ClassificationProkaryotesEukaryotesNuclear MembraneBiodiversityAnd Classification SystemsBiodiversity And Classification SystemsThe Living WorldBiology

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