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Online Mock Tests & Exam Preparation | Target Exams

NIOS Class XII Biology Test Series

31 chapter-wise practice tests with 248 exam-style questions. Available in Foundation & Advanced levels (No Negative Marking).

About the NIOS Class XII Biology Test Series

Practise every chapter of NIOS Class XII Biology through chapter-wise online tests designed around the official NIOS syllabus. Each test contains 15 questions with TargetExams practice scoring (+4 marks for a correct answer, no negative marking). Each chapter test follows the real NIOS Class XII Biology syllabus, so you can revise a chapter, solve its test, and instantly see your score and weak areas. Regular chapter-wise practice builds the concept clarity, speed and accuracy you need for the final board exam. Attempt the tests in order, review your mistakes and reattempt any chapter to track your improvement before the exam.

  • 31 chapter-wise tests covering the full Biology syllabus
  • 248 practice MCQs with +4 marks per correct answer and no negative marking
  • Timed environment with instant results and reattempt option
  • Bilingual (English + Hindi/Bengali) questions available for state boards
Set 01 • Foundation Level

Chapter Test - Origin and Evolution of Life and Introduction to Classification

8
Questions
8 min
Duration
+1 / 0
No Negative
Set 01 • Foundation Level

Chapter Test - The Kingdom Monera, Protoctista and Fungi

8
Questions
8 min
Duration
+1 / 0
No Negative
Set 01 • Foundation Level

Chapter Test - Kingdom Plantae and Animalia

8
Questions
8 min
Duration
+1 / 0
No Negative
Set 01 • Foundation Level

Chapter Test - Cell Structure and Function

8
Questions
8 min
Duration
+1 / 0
No Negative
Set 01 • Foundation Level

Chapter Test - Tissues and other Level of Organization

8
Questions
8 min
Duration
+1 / 0
No Negative
Set 01 • Foundation Level

Chapter Test - Root System

8
Questions
8 min
Duration
+1 / 0
No Negative
Set 01 • Foundation Level

Chapter Test - Shoot System

8
Questions
8 min
Duration
+1 / 0
No Negative
Set 01 • Foundation Level

Chapter Test - Absorption, Transport and Water Loss in Plants

8
Questions
8 min
Duration
+1 / 0
No Negative
Set 01 • Foundation Level

Chapter Test - Nutrition in Plants - Mineral Nutrition

8
Questions
8 min
Duration
+1 / 0
No Negative
Set 01 • Foundation Level

Chapter Test - Nitrogen Metabolism

8
Questions
8 min
Duration
+1 / 0
No Negative
Set 01 • Foundation Level

Chapter Test - Photosynthesis

8
Questions
8 min
Duration
+1 / 0
No Negative
Set 01 • Foundation Level

Chapter Test - Respiration in Plants

8
Questions
8 min
Duration
+1 / 0
No Negative
Set 01 • Foundation Level

Nutrition and Digestion — Practice Set 01

8
Questions
8 min
Duration
+1 / 0
No Negative
Set 01 • Foundation Level

Respiration and Elimination of Nitrogenous Wastes — Practice Set 01

8
Questions
8 min
Duration
+1 / 0
No Negative
Set 01 • Foundation Level

Circulation of Body Fluids — Practice Set 01

8
Questions
8 min
Duration
+1 / 0
No Negative
Set 01 • Foundation Level

Locomotion and Movement — Practice Set 01

8
Questions
8 min
Duration
+1 / 0
No Negative
Set 01 • Foundation Level

Coordination and Control - The Nervous and Endocrine Systems — Practice Set 01

8
Questions
8 min
Duration
+1 / 0
No Negative
Set 01 • Foundation Level

Homeostasis: The Steady State — Practice Set 01

8
Questions
8 min
Duration
+1 / 0
No Negative
Set 01 • Foundation Level

Reproduction in Plants — Practice Set 01

8
Questions
8 min
Duration
+1 / 0
No Negative
Set 01 • Foundation Level

Growth and Development in Plants — Practice Set 01

8
Questions
8 min
Duration
+1 / 0
No Negative
Set 01 • Foundation Level

Reproduction and Population Control — Practice Set 01

8
Questions
8 min
Duration
+1 / 0
No Negative
Set 01 • Foundation Level

Principles of Genetics — Practice Set 01

8
Questions
8 min
Duration
+1 / 0
No Negative
Set 01 • Foundation Level

Molecular Inheritance and Gene Expression — Practice Set 01

8
Questions
8 min
Duration
+1 / 0
No Negative
Set 01 • Foundation Level

Genetics and Society — Practice Set 01

8
Questions
8 min
Duration
+1 / 0
No Negative
Set 01 • Foundation Level

Principles of Ecology — Practice Set 01

8
Questions
8 min
Duration
+1 / 0
No Negative
Set 01 • Foundation Level

Conservation and Use of Natural Resources — Practice Set 01

8
Questions
8 min
Duration
+1 / 0
No Negative
Set 01 • Foundation Level

Pollution — Practice Set 01

8
Questions
8 min
Duration
+1 / 0
No Negative
Set 01 • Foundation Level

Nutrition and Health — Practice Set 01

8
Questions
8 min
Duration
+1 / 0
No Negative
Set 01 • Foundation Level

Some Common Human Diseases — Practice Set 01

8
Questions
8 min
Duration
+1 / 0
No Negative
Set 01 • Foundation Level

Biotechnology — Practice Set 01

8
Questions
8 min
Duration
+1 / 0
No Negative
Set 01 • Foundation Level

Immunobiology: An Introduction — Practice Set 01

8
Questions
8 min
Duration
+1 / 0
No Negative

📚 Study Tips for NIOS Class XII Biology

  • Start with Set 01 (Foundation) to test core chapter concepts and basic definitions.
  • Attempt Set 02 (Advanced) to master high-order thinking and tricky problems.
  • Practise with speed and accuracy — remember there is no negative marking (+4 marks per correct answer).
  • Go through the bilingual explanation after every test and note down mistakes.
  • Attempt chapters in textbook order and reattempt weak areas regularly.

❓ Frequently Asked Questions (FAQs)

Yes, all chapter tests are fully updated according to the latest West Bengal Board (WBCHSE) Class 12 Bengali syllabus, covering Semester III, Semester IV, and Classic annual chapters.
No, there is no negative marking in these chapter practice tests. Each correct answer carries +4 marks, while unattempted or incorrect answers receive 0 marks.
Set 01 (Foundation) tests core textbook lines, word meanings, sources, and direct facts. Set 02 (Advanced) tests deeper literary analysis, symbolism, structural insights, and higher-order thinking.
Yes, you can reattempt any chapter test as many times as you like. Your highest score and complete performance analytics are saved in your TargetExams dashboard.
Chapters in this Subject
  • 1 Origin and Evolution of Life and Introduction to Classification
  • 2 The Kingdom Monera, Protoctista and Fungi
  • 3 Kingdom Plantae and Animalia
  • 4 Cell Structure and Function
  • 5 Tissues and other Level of Organization
  • 6 Root System
  • 7 Shoot System
  • 8 Absorption, Transport and Water Loss in Plants
  • 9 Nutrition in Plants - Mineral Nutrition
  • 10 Nitrogen Metabolism
  • 11 Photosynthesis
  • 12 Respiration in Plants
  • 13 Nutrition and Digestion
  • 14 Respiration and Elimination of Nitrogenous Wastes
  • 15 Circulation of Body Fluids
  • 16 Locomotion and Movement
  • 17 Coordination and Control - The Nervous and Endocrine Systems
  • 18 Homeostasis: The Steady State
  • 19 Reproduction in Plants
  • 20 Growth and Development in Plants
  • 21 Reproduction and Population Control
  • 22 Principles of Genetics
  • 23 Molecular Inheritance and Gene Expression
  • 24 Genetics and Society
  • 25 Principles of Ecology
  • 26 Conservation and Use of Natural Resources
  • 27 Pollution
  • 28 Nutrition and Health
  • 29 Some Common Human Diseases
  • 30 Biotechnology
  • 31 Immunobiology: An Introduction
Other Class XII Subjects
Bengali Active English Test Series Mathematics Test Series Physics Test Series Chemistry Test Series Biological Sciences Test Series
NIOS Classes
Class 7 Class 8 Class 9 Class 10 Class 11 Class 12