GRB New Era Biology Class 11 Part-II is an NCERT-aligned biology textbook published by G.R. Bathla & Sons designed for CBSE Class 11 students. Authored by experienced educators Dr. R.K. Pillai and Dr. A.K. Chaudhry, this Volume-II continues from Part-I to cover the latter half of the Class 11 biology syllabus, reinforcing the foundational concepts of life sciences in a clear and student-friendly manner. It presents detailed theory explanations, diagrams, and a variety of solved and practice questions to help learners deepen conceptual understanding, prepare for school assessments, and build a strong base for competitive studies.