The book on MCQ s in Plant Breeding, Biotechnology and Seed Science has been prepared with the idea of exposing the students those who are preparing for the competitive examinations like Agricultural Research Services, NET, Public Service Commissions, Institute of Banking Personnel Selection, University and Institute admissions etc. It has three major parts viz., Plant Breeding, Biotechnology and Seed Science. The book has 80 chapters consisting more than 3000 multiple choice questions with answers. Genetics, breeding methods, resistance breeding, mutation breeding and polyploidy breeding in Plant Breeding; cell biology, molecular biology, tissue culture, animal biotechnology and bioinformatics in Biotechnology; and seed formation, biology, production, post harvest processing, storage, health, marketing and legislation in Seed Science are some of the important chapters covered in the book. The book is prepared with latest informations and therefore, it will be highly useful to the teachers, scientists and students for updating their knowledge.