Class 12 · Biology · Chapter 21

Board Paper 2023 Set 57-3-1 with Solutions: complete notes

Neat, exam-ready notebook-style notes for Board Paper 2023 Set 57-3-1 with Solutions, following your NCERT book. This chapter is part of the complete Class 12 Biology PYQ Book: Solved Board Papers 2016-2026 (CBSE).

What you get in the pack

• 10 years of CBSE Class 12 Biology board papers: 2016 to 2026 (17 papers)
• All 13 chapters and 17 board papers complete
• Part A: all 13 chapters, questions sorted chapter-wise and by marks
• Year-wise weightage table and most-asked topics for every chapter
• Part B: each full board paper followed by its complete solutions
• Labelled diagrams, Punnett squares, crosses and flow charts drawn in full
• Questions on deleted topics flagged; only the current syllabus in Part A

All chapters in this pack

1. PYQ Ch 1 Sexual Reproduction in Flowering Plants
2. PYQ Ch 2 Human Reproduction
3. PYQ Ch 3 Reproductive Health
4. PYQ Ch 4 Principles of Inheritance and Variation
5. PYQ Ch 5 Molecular Basis of Inheritance
6. PYQ Ch 6 Evolution
7. PYQ Ch 7 Human Health and Disease
8. PYQ Ch 8 Microbes in Human Welfare
9. PYQ Ch 9 Biotechnology: Principles and Processes
10. PYQ Ch 10 Biotechnology and its Applications
11. PYQ Ch 11 Organisms and Populations
12. PYQ Ch 12 Ecosystem
13. PYQ Ch 13 Biodiversity and Conservation
14. Board Paper 2026 Set 57-1-1 with Solutions
15. Board Paper 2026 Set 57-2-1 with Solutions
16. Board Paper 2025 Set 57-4-1 with Solutions
17. Board Paper 2025 Set 57-5-1 with Solutions
18. Board Paper 2024 Set 57-1-1 with Solutions
19. Board Paper 2024 Set 57-2-1 with Solutions
20. Board Paper 2023 Set 57-1-1 with Solutions
21. Board Paper 2023 Set 57-3-1 with Solutions
22. Board Paper 2022 Term 2 Set 57-2-1 with Solutions
23. Board Paper 2022 Term 2 Set 57-4-1 with Solutions
24. Board Paper 2020 Set 57-1-1 with Solutions
25. Board Paper 2020 Set 57-2-1 with Solutions
26. Board Paper 2019 Set 57-2-1 with Solutions
27. Board Paper 2019 Set 57-3-1 with Solutions
28. Board Paper 2018 Set 57-1 with Solutions
29. Board Paper 2017 Set 57-1 with Solutions
30. Board Paper 2016 Set 57-1 with Solutions