This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Toxicology - 3, Subject name: Forensic Medicine
The active principle of this toxic seed is: 
Select and explain. 
A. Crotin, B. Ricin, C. Abrin, D. Capsicin
B: Ricin
Answer: B: Ricin 
Explanation: The given image is castor seed also known as Ricinus communis. Crushed seed is poisonous. It contains active principle- Ricin which leads to intense gastroenteritis and bloody diarrhoea.