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Biologyabc OF According to new syllabus prescribed by Central Board of Secondary Education (CBSE), New Delhi and State Boards of Uttarakhand, Karnataka (II nd Year PUC), Chhattisgarh, Jharkhand, Punjab, Haryana, Himachal, Kerala, Mizoram, Meghalaya, Nagaland, Assam, Manipur and other States following CBSE & ISC curriculum. BIOLOGYabc OF Class XII PART-I By Dr. B. B. Arora M.Sc., Ph.D., Dip. in French Formerly Head, Deptt. of Botany, Dyal Singh College, Karnal Strictly A. K. Sabharwal in accordance M.Sc., M.Phil. (Gold-Medalist), with the Latest Formerly Head, Deptt. of Zoology, Guidelines and Syllabus S.D. College, Including Panipat Value Based Questions issued by GENERAL EDITORS Dr. Ruchi Arora N.C.E.R.T. / C.B.S.E. Raj Sabharwal Suman Shreya THOROUGHLY REVISED & UPDATED EDITION 2017–2018 MODERN PUBLISHERS (Producers of Quality Textbooks) Price of Part III&:890.00 OUR ADDRESSES IN INDIA New Delhi: MBD House, Gulab Bhawan, 6, Bahadur Shah Zafar Marg Ph. 23317931, 23318301 Mumbai: A-683, T.T.C. Industrial Area, M.I.D.C. Off. 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If this hologram is missing, ++ Modern's abc of Computer Science C please do not purchase the book as it is likely to be a duplicate book. Any such duplicacy if noted may please be intimated to the Publishers. We are committed to serve students with best of our knowledge and resources. We have taken utmost care and paid much attention while editing and printing this book but we would beg to state that Authors and Publishers should not be held responsible for unintentional mistakes that might have crept in. However, errors brought to our notice shall be gratefully acknowledged and attended to. © All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise without the prior written permission of the publisher. Any breach will entail legal action and prosecution without further notice. Published by : Balwant Sharma MODERN PUBLISHERS E [email protected] MBD House, Railway Road, Jalandhar W www.mbdgroup.com Printed at : TECHNOVAL PRINTERS Toll Free No. : 1800 200 2233 C-57-58, Focal Point Extension, Jalandhar We are pleased to present the revised edition of textbook entitled ‘Modern's abc + of Biology’ to all those teachers and students who are engaged in teaching and studying XII class of CBSE and various State Educational Boards. This textbook has been compiled according to the latest syllabus. About the book This book has been divided into five units : Reproduction, Genetics and Evolution, Biology in Human Welfare, Biotechnology and Its Applications and Ecology and Environment. First unit on ‘Reproduction’ includes chapters on Reproduction in Organisms, Sexual Reproduction in Flowering Plants, Human Reproduction and Reproductive Health. 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This unit includes details of Ecosystem components, types and Energy flow, Species, Population and Community, Ecological adaptations, Conservation of biodiversity and various current environmental problems. Other important features of this book are ❍ The boxes which provide additional information about some specific topics. ❍ The boxes containing some interesting facts useful for competitive examinations. ❍ Comparative tables to highlight the differences between important concepts. ❍ Profusely illustrated with examples and well labelled diagrams. ❍ Important technical terms mentioned in the chapter defined under the heading ‘Key Terms’. ❍ NCERT Textbook Questions Solved. ❍ NCERT Exemplar Problems Solved. ❍ Value Based Questions Solved. ❍ HOTS and Brain Twisting Questions. ❍ Quick Memory Test ❍ Solved objective type questions which have been categorized into the following categories : • A. Multiple Choice Questions. 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These have been classified into following categories: • Very Short Answer Questions (One mark each)— Solved. • Short Answer Questions (Two marks each) — Solved. • Short Answer Questions (Three marks each). • Long Answer Questions (Five marks each). ❍ Solved Very Short Answer Questions (One mark) and Short Answer Questions (Two marks) asked in CBSE and various State Board examinations have also been included. ❍ Chapter Practice Test This ‘SMART BOOK’ is being presented after microscopic revision. Each and every word has been read with utmost care. Being a smart book, it is incorporated with “NYTRA”, which is the first augmented reality app. for K-12 Education in India. NYTRA will facilitate the readers to understand the basics and the alligorical background of the subject matter very easily and clearly with the help of different laminations. Acknowledgements Our strength is Modern Publishers who helped us with boundless support. We would like to express our gratitude to Mr. Manik Juneja, National Head—Content Operations, Mr. B.S. Rawat, Mr. S.K. Sikka and Mr. Ravinder Pathania for their
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