Which of the following represents the tiniest infectious agents that cause diseases in plants?

Biology Mcqs for PPSC, FPSC, NTS, and Pakistan government job tests. Select an option below, then read the explanation.

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Subject
Biology Mcqsbiology-mcqs
Published
3 Aug 2024
Last updated
28 May 2026

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Explanation

Viroids are the smallest known infectious pathogens affecting plants. Unlike viruses (virions), mycoplasma, or prions, viroids consist solely of short strands of circular RNA and lack a protein coat, making them unique and minimalistic disease-causing agents.

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