Answer: Conjugation, transduction, or transformation.
- A Plasmogamy during normal conditions as generally observed
- B Conjugation, transduction, or transformation
- C Gametic fusion followed by meiosis in typical laboratory settings
- D Formation of a plasmodium under usual circumstances
Correct answer: B. Conjugation, transduction, or transformation
Explanation: Bacteria primarily reproduce asexually by fission, but genetic material can be transferred between cells through conjugation (direct contact), transduction (via bacteriophages), or transformation (uptake of free DNA), without true cell fusion.
Whittaker's five-kingdom system (1969) groups all cellular life by cell structure and nutrition; viruses, viroids, and lichens fall outside this system entirely since they aren't independently classifiable as one of the five.
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.