This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: mycology, Subject name: Microbiology
Black coloured grains in mycetoma is produced by 
Select and explain. 
A. Leptospira, B. Nocardia, C. Actinomadura, D. Phaecremonium
A: Leptospira
Answer: A: Leptospira 
Explanation: Leptospira, madurella, exophiala produce black colored colonies or grains in mycetoma Nocardia-white Phaecremonium -yellowish white Ref: Baveja 5th ed pg: 551