This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMT Q Bank, Subject name: Forensic Medicine
One of the following plants is an ideal cattle poison: 
Select and explain. 
A. Nerium odorum, B. Calotropis, C. Abrus precatorius, D. Cerebra thevetia
C: Abrus precatorius
Answer: C: Abrus precatorius 
Explanation: Abrus precatorius is commonly used as cattle poison in Indian villages. The toxic principle is injected into the animal in the form of fine needle-shaped structures called 'suis'. Seeds are also used as aboifacient and as arrow poison.