This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Forensic Medicine
Vegetable viper snake poison is - 
Select and explain. 
A. Croton, B. Madar, C. Abrus, D. Semicarpus
C: Abrus
Answer: C: Abrus 
Explanation: Abrus precatorius seed is odourless, tasteless, oval (egg shaped), bright scarlet coloured with a black spot at one pole and contain abrin, a toxalbumin as its active principle, which is similar to viper snake venom.