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Question
Taxonomists feel difficulty in classification of
Taxonomists feel difficulty in classification of
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Solution
The correct option is B Unicellular eukaryotes
Diverse nutritional habits ranging from autotrophic to obligate intracellular parasite; thus they can be autotrophs like plants, heterotrophs like animals and decomposers/saprotrophs like algae. They are classified on the basis of phylogenetic relationship based on rRNA sequences. Option B is correct. Prokaryotes are characterized by absence of true membrane bound nucleus and intracellular membranous structures; these characters differentiate them from eukaryotic organisms. Option A is incorrect. Plants are eukaryotic organisms with characteristic cell wall and autotrophic mode of nutrition. Option C is incorrect. Animals differ from plants by absence of cell wall and heterotrophic mode of nutrition. Option D is incorrect. Thus, the correct answer is option B.
Diverse nutritional habits ranging from autotrophic to obligate intracellular parasite; thus they can be autotrophs like plants, heterotrophs like animals and decomposers/saprotrophs like algae. They are classified on the basis of phylogenetic relationship based on rRNA sequences. Option B is correct. Prokaryotes are characterized by absence of true membrane bound nucleus and intracellular membranous structures; these characters differentiate them from eukaryotic organisms. Option A is incorrect. Plants are eukaryotic organisms with characteristic cell wall and autotrophic mode of nutrition. Option C is incorrect. Animals differ from plants by absence of cell wall and heterotrophic mode of nutrition. Option D is incorrect. Thus, the correct answer is option B.
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