- A Single-stranded RNA
- B Double-stranded DNA mainly
- C Double-stranded RNA mainly
- D Usually both DNA and RNA
Correct answer: A. Single-stranded RNA
Explanation: Most viruses infecting plants have single-stranded RNA as genetic material. Animal viruses may have single or double-stranded RNA, or double-stranded DNA.
Concept context
Whittaker's five kingdom system covering Monera, Protista, Fungi, plus viruses, viroids, and lichens. A foundational NEET chapter on how living organisms are grouped.