National Council of Educational Research and Training (NCERT) gratefully
acknowledges the contribution of the individuals and organisations involved in the
development of the Biology textbook for Class XI. The Council is grateful to Arvind
Gupte, Principal (Retd.), Government Collegiate Education Services, Madhya Pradesh;
Shailaja Hittalmani, Associate Professor (Genetics), University of Agricultural Sciences,
Bangalore; K.R. Shivanna, Professor (Retd.), Department of Botany, University of Delhi,
Delhi; R.S. Bedwal, Professor, Department of Zoology, University of Rajasthan, Jaipur;
P.S. Srivastava, Professor, Department of Biotechnology, Hamdard University, New Delhi
and Pramila Shivanna, former Teacher, D.A.V. School, Delhi, for their valuable
suggestions.