ICSE Class 12 Biology — Important Questions (Board Exams 2027)
ICSE Class 12 Biology important questions, chapter by chapter — 1355 questions with answers across 15 chapters. For the board exams 2027.
How to use this page
Each chapter below has important questions with answers for the ICSE board exams 2027. Write your answers out before checking — reading alone doesn't build exam speed.
Chapter-wise Important Questions — 15 Chapters
How many cells are present in a mature embryo sac?
Double fertilisation occurs in gymnosperms.
Which structure develops from the ovule after fertilisation?
What is the primary energy source for sperm motility in human semen?
Which hormone triggers ovulation in the menstrual cycle?
What structure is formed from the ruptured Graafian follicle after ovulation?
Which of the following is a barrier method of contraception?
What does IUD stand for?
Vasectomy involves cutting and tying of which structure?
12 more chapters below
Practise important questions with answers for all 15 chapters in Super Tutor.
Try Super Tutor — It's FreeGet chapter-wise help for ICSE Class 12 Biology
Super Tutor gives you chapter summaries, revision notes, practice quizzes and flashcards, organised around the ICSE syllabus. Free to start.
Try Super Tutor freeFrequently Asked Questions
Where can I find ICSE Class 12 Biology Important Questions?
This page has important questions for 15 chapters of ICSE Class 12 Biology for the board exams 2027. Each chapter links to its own page with the full set.
How should I prepare for ICSE Class 12 Biology board exams?
Go through the syllabus first, then work chapter by chapter: learn the ideas, practise questions, and revise with notes and flashcards. Leave time at the end to revise every chapter once more under timed conditions.
Which chapters of ICSE Class 12 Biology should I practise first?
Start with the chapters you find hardest and the ones your teacher flags as high-weightage, then cover the rest. Each chapter page lists its important questions with answers.
Browse Important Questions by Chapter
15 chapters
Sexual Reproduction in Flowering Plants
Human Reproduction
Reproductive Health
Principles of Inheritance and Variation
Molecular Basis of Inheritance
Origin of life
Evidences and Theories of Biological Evolution
Human Evolution
Human Health and Disease
Microbes in Human Welfare
Principles and Processes of Biotechnology
Biotechnology and its Applications
Organisms and Populations
Ecosystem
Biodiversity and Conservation
More Biology Resources
ICSE Class 12
Practice Quiz
Test yourself with quick quizzes
Revision Notes
Key concepts and quick revision points
Formula Sheet
The formulas of each chapter in one place
Chapter Summary
Understand each chapter at a glance
Concept Maps
Diagrams showing how topics connect
Study Plan
Week-by-week preparation schedule
Flashcards
Quick-fire cards for active recall practice
Syllabus
Chapter list and the topics in each