Which of the following is not a described type of virus?
Correct answer: D. Virus containing single strand RNA and single strand DNA
- A. Virus containing single strand DNA
- B. Virus containing double strand DNA
- C. Virus containing single strand RNA
- D. Virus containing single strand RNA and single strand DNA
Explanation
Option D is correct, as viruses can be classified into two groups based on their genetic material: DNA viruses and RNA viruses. DNA viruses have a double-stranded DNA genome, while RNA viruses have either a single-stranded RNA genome or a double-stranded RNA genome. There is no known virus that has both a single-stranded RNA genome and a single-stranded DNA genome.
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About Biodiversity and Variety of Life
Biological classification uses taxonomic ranks, binomial nomenclature and shared characteristics to organize life into kingdoms. The major groups include prokaryotes, protists, fungi, plants and animals, with comparisons based on cell type, cell wall, nutrition, body organization, reproduction and evolutionary relationships; prokaryotes lack a membrane-bound nucleus.
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