# Biology — NCERT Class 11 — CBSE (NCERT textbooks) — Shishya school context > Subject page: https://shishya.in/schooling/cbse/class-11/biology · class: https://shishya.in/schooling/cbse/class-11 (context: https://shishya.in/schooling/cbse/class-11/context.md) · data as of 2026-10-10 (IST). Free to cite; link back to the subject page. > Honesty: Shishya never reproduces, summarises or translates textbook text — read a chapter at its official link. Practice questions are Shishya's own, written by AI and answer-checked before they are shown; they are not NCERT exercises, not board questions and not previous-year questions. A chapter marked "not ready yet" has no Shishya notes or practice, and its Shishya page is not linked here. > Children: Class 1-7 school pages have no chat tutor, offer no sign-in and ask no child to create an account. On Class 8-12 pages a student may sign in to save practice to an account — for students 13 and above; no school page asks anyone their age or role — and anyone can read a chapter, take its practice where the chapter has one and ask the AI tutor about it without signing in; the tutor says it is an AI and answers study questions only, with a daily message limit. The 5-question practice on the chapter pages that have it needs no account, and no result is saved to any account or profile from it: Shishya records only an anonymous usage event (which chapter was practised and the score) — on Class 8-12 pages with the same cookie-based analytics every page view sends, on Class 1-7 pages with no cookie, account or other visitor identifier. A signed-in student's own practice set is saved to that account. ## Biology - Book: Biology — https://ncert.nic.in/textbook.php?kebo1=0-19 (NCERT also lists Hindi, Urdu editions) - Chapters (19; 19 with Shishya notes, 19 with answer-checked practice of 5+ questions): - Chapter 1 — The Living World — Shishya notes + 40 answer-checked practice questions: https://shishya.in/schooling/cbse/class-11/biology/the-living-world · official PDF: https://ncert.nic.in/textbook/pdf/kebo101.pdf - Chapter 2 — Biological Classification — Shishya notes + 40 answer-checked practice questions: https://shishya.in/schooling/cbse/class-11/biology/biological-classification · official PDF: https://ncert.nic.in/textbook/pdf/kebo102.pdf - Chapter 3 — Plant Kingdom — Shishya notes + 40 answer-checked practice questions: https://shishya.in/schooling/cbse/class-11/biology/plant-kingdom · official PDF: https://ncert.nic.in/textbook/pdf/kebo103.pdf - Chapter 4 — Animal Kingdom — Shishya notes + 40 answer-checked practice questions: https://shishya.in/schooling/cbse/class-11/biology/animal-kingdom · official PDF: https://ncert.nic.in/textbook/pdf/kebo104.pdf - Chapter 5 — Morphology of Flowering Plants — Shishya notes + 39 answer-checked practice questions: https://shishya.in/schooling/cbse/class-11/biology/morphology-of-flowering-plants · official PDF: https://ncert.nic.in/textbook/pdf/kebo105.pdf - Chapter 6 — Anatomy of Flowering Plants — Shishya notes + 36 answer-checked practice questions: https://shishya.in/schooling/cbse/class-11/biology/anatomy-of-flowering-plants · official PDF: https://ncert.nic.in/textbook/pdf/kebo106.pdf - Chapter 7 — Structural Organisation in Animals — Shishya notes + 39 answer-checked practice questions: https://shishya.in/schooling/cbse/class-11/biology/structural-organisation-in-animals · official PDF: https://ncert.nic.in/textbook/pdf/kebo107.pdf - Chapter 8 — Cell : The Unit of Life — Shishya notes + 40 answer-checked practice questions: https://shishya.in/schooling/cbse/class-11/biology/cell-the-unit-of-life · official PDF: https://ncert.nic.in/textbook/pdf/kebo108.pdf - Chapter 9 — Biomolecules — Shishya notes + 40 answer-checked practice questions: https://shishya.in/schooling/cbse/class-11/biology/biomolecules · official PDF: https://ncert.nic.in/textbook/pdf/kebo109.pdf - Chapter 10 — Cell Cycle and Cell Division — Shishya notes + 37 answer-checked practice questions: https://shishya.in/schooling/cbse/class-11/biology/cell-cycle-and-cell-division · official PDF: https://ncert.nic.in/textbook/pdf/kebo110.pdf - Chapter 11 — Photosynthesis in Higher Plants — Shishya notes + 39 answer-checked practice questions: https://shishya.in/schooling/cbse/class-11/biology/photosynthesis-in-higher-plants · official PDF: https://ncert.nic.in/textbook/pdf/kebo111.pdf - Chapter 12 — Respiration in Plants — Shishya notes + 40 answer-checked practice questions: https://shishya.in/schooling/cbse/class-11/biology/respiration-in-plants · official PDF: https://ncert.nic.in/textbook/pdf/kebo112.pdf - Chapter 13 — Plant Growth and Development — Shishya notes + 40 answer-checked practice questions: https://shishya.in/schooling/cbse/class-11/biology/plant-growth-and-development · official PDF: https://ncert.nic.in/textbook/pdf/kebo113.pdf - Chapter 14 — Breathing and Exchange of Gases — Shishya notes + 40 answer-checked practice questions: https://shishya.in/schooling/cbse/class-11/biology/breathing-and-exchange-of-gases · official PDF: https://ncert.nic.in/textbook/pdf/kebo114.pdf - Chapter 15 — Body Fluids and Circulation — Shishya notes + 38 answer-checked practice questions: https://shishya.in/schooling/cbse/class-11/biology/body-fluids-and-circulation · official PDF: https://ncert.nic.in/textbook/pdf/kebo115.pdf - Chapter 16 — Excretory Products and their Elimination — Shishya notes + 39 answer-checked practice questions: https://shishya.in/schooling/cbse/class-11/biology/excretory-products-and-their-elimination · official PDF: https://ncert.nic.in/textbook/pdf/kebo116.pdf - Chapter 17 — Locomotion and Movement — Shishya notes + 40 answer-checked practice questions: https://shishya.in/schooling/cbse/class-11/biology/locomotion-and-movement · official PDF: https://ncert.nic.in/textbook/pdf/kebo117.pdf - Chapter 18 — Neural Control and Coordination — Shishya notes + 40 answer-checked practice questions: https://shishya.in/schooling/cbse/class-11/biology/neural-control-and-coordination · official PDF: https://ncert.nic.in/textbook/pdf/kebo118.pdf - Chapter 19 — Chemical Coordination and Integration — Shishya notes + 40 answer-checked practice questions: https://shishya.in/schooling/cbse/class-11/biology/chemical-coordination-and-integration · official PDF: https://ncert.nic.in/textbook/pdf/kebo119.pdf - Shishya content last updated: 2026-10-03 ## Other subjects in this class - Sanskrit: https://shishya.in/schooling/cbse/class-11/sanskrit - Accountancy: https://shishya.in/schooling/cbse/class-11/accountancy - Chemistry: https://shishya.in/schooling/cbse/class-11/chemistry - Mathematics: https://shishya.in/schooling/cbse/class-11/mathematics - Psychology: https://shishya.in/schooling/cbse/class-11/psychology - Geography: https://shishya.in/schooling/cbse/class-11/geography - Physics: https://shishya.in/schooling/cbse/class-11/physics - Hindi: https://shishya.in/schooling/cbse/class-11/hindi - Sociology: https://shishya.in/schooling/cbse/class-11/sociology - English: https://shishya.in/schooling/cbse/class-11/english - Political Science: https://shishya.in/schooling/cbse/class-11/political-science - History: https://shishya.in/schooling/cbse/class-11/history - Economics: https://shishya.in/schooling/cbse/class-11/economics - Business Studies: https://shishya.in/schooling/cbse/class-11/business-studies - Urdu: https://shishya.in/schooling/cbse/class-11/urdu - Home Science: https://shishya.in/schooling/cbse/class-11/home-science - Creative Writing and Translation: https://shishya.in/schooling/cbse/class-11/creative-writing-and-translation - Fine Art: https://shishya.in/schooling/cbse/class-11/fine-art - Informatics Practices: https://shishya.in/schooling/cbse/class-11/informatics-practices - Computer Science: https://shishya.in/schooling/cbse/class-11/computer-science - Health and Physical Education: https://shishya.in/schooling/cbse/class-11/health-and-physical-education - Biotechnology: https://shishya.in/schooling/cbse/class-11/biotechnology - Sangeet: https://shishya.in/schooling/cbse/class-11/sangeet - Knowledge Traditions Practices of India: https://shishya.in/schooling/cbse/class-11/knowledge-traditions-practices-of-india