Ricin and Abrin are both plant based toxins

• A. Plant based
• B. Animal based
• C. Microbial based
• D. Synthetic

Answer: (A)

Ricin and Abrin are plant-based toxins because they are produced by plants and belong to plant-derived ribosome-inactivating proteins. Ricin comes from the castor bean plant, and Abrin comes from the rosary pea. They are not toxins from animals, microbes, or synthetic chemicals. Their action—halting protein synthesis by damaging ribosomes—is a hallmark of plant ribosome-inactivating proteins, reinforcing their plant origin.