Biology Questions and Answers – Class 11

Biology Class 11 Questions and Answers

Our 1000+ “Biology – Class 11” (along with 1000+ “Biology – Class 12”) questions and answers focuses on all areas of Biology covering 200+ topics in Biology. One can read Biology Class 12 Here. These topics are chosen from a collection of most authoritative and best reference books on Biology. One should spend 1 hour daily for 2-3 months to learn and assimilate Biology comprehensively. This way of systematic learning will prepare anyone easily towards Biology interviews, online tests, examinations and certifications.


– 1000+ Multiple Choice Questions & Answers in Biology with explanations
– Every MCQ set focuses on a specific topic in Biology Subject


Who should Practice these Biology Questions?
– Anyone wishing to sharpen their knowledge of Class 11 – Biology Subject
– Anyone preparing for school test and many other online/Offline Tests/Contests in Biology
– Anyone preparing for NEET, MBBS, AIIMS, BDS-Dental, Pharmacy & Medical Entrance Exams in Biology
– Anyone preparing for various Central board examinations in Biology namely CBSE, ICSE, IGCSE, and NIOS Board
– Anyone preparing for various State board examinations in Biology such as PUC, Intermediate exams, etc
– Anyone preparing for entrance examinations and other competitive examinations such as NTSE, Olympiad, etc
– All – High School Students and Freshers

Here’s list of Questions & Answers on Biology – Class 11 Subject covering 100+ topics:

1. Questions & Answers on The Living World

The section contains questions and answers on living and non living world, living world diversity, taxonomic categories, taxonomical aids and nomenclature.

Living and Non Living – 1
Living and Non Living – 2
Diversity in the Living World – 1
Diversity in the Living World – 2
Taxonomic Categories
Taxonomical Aids

2. Questions on Biological Classification

The section contains questions on organisms classification by aristotle and linnaeus, whittakers classification, monera, protista, fungi, viruses, viroids and lichens.

Classification of Organisms by Aristotle and Linnaeus
Whittaker’s Classification of Organisms
Protista – 1
Protista – 2
Fungi – 1
Fungi – 2
Fungi – 3
Viruses, Viroids and Lichens – 1
Viruses, Viroids and Lichens – 2

3. Questions & Answers on Plant Kingdom

The section contains questions and answers on plantae classification, algae, bryophytes, pteridophytes, gymnosperms, angiosperms and plant life cycles.

Classification in Plantae
Plant Life Cycles and Alternation of Generation

4. Questions on Animal Kingdom

The section contains questions on animals classification basics, chordata and animal kingdom classification into different phylum.

Basis of Classification in Animals – 1
Basis of Classification in Animals – 2
Classification of Animal Kingdom into Different Phylum-1
Classification of Animal Kingdom into Different Phylum-2
Classification of Animal Kingdom into Different Phylum-3
Classification of Animal Kingdom into Different Phylum-4

5. Questions & Answers on Morphology of Flowering Plants


The section contains questions and answers on flowering plants morphology like root, stem, leaf, flower, fruit and seed, fabaceae, solanaceae and liliaceae.

Fruit and the Seed-1
Fruit and the Seed-2
Fabaceae, Solanaceae and Lillaceae

6. Questions on Anatomy of Flowering Plants

The section contains questions on plants tissue system and secondary growth, dicotyledonous and monocotyledonous plants anatomy.

Tissue System in Plants
Anatomy of Dicotyledonous Plant
Anatomy of Monocotyledonous Plants
Secondary Growth of a Plant

7. Questions & Answers on Structural Organisations in Animals

The section contains questions and answers on animal tissues, animals organs and organ system, earthworm, cockroach and frogs.

Animal Tissues – 1
Animal Tissues – 2
Animal Tissues – 3
Animal Tissues – 4
Organs and Organ System – 1
Organs and Organ System – 2
Organs and Organ System – 3
Organs and Organ System – 4
Earthworm – 1
Earthworm – 2
Earthworm – 3
Cockroach – 1
Cockroach – 2
Cockroach – 3
Frogs – 1
Frogs – 2
Frogs – 3

8. Questions on Cell : The Unit of Life

The section contains questions on cell basics, organelles in eukaryotic and prokaryotic cells, nucleus, cytoplasm, cell theory, prokaryotic cells, nucleus, eukaryotic cells and its organelles.

Cell Basics
Organelles in Eukaryotic and Prokaryotic Cells
Nucleus and Cytoplasm
Cell Theory
Prokaryotic Cells
Eukaryotic Cells and it’s Organelles – 1
Eukaryotic Cells and it’s Organelles – 2
Eukaryotic Cells and it’s Organelles – 3
Eukaryotic Cells and it’s Organelles – 4

9. Questions & Answers on Biomolecules

The section contains questions and answers on biomolecules basics, biomolecules chemical analysis, primary and secondary metabolites, biomacromolecules, proteins, polysaccharides, nuclei acids, proteins structure, metabolism concept, enzymes and biocatalysts.

Biomolecules – 1
Biomolecules – 2
Biomolecules – 3
Biomolecules Chemical Analysis – 1
Biomolecules Chemical Analysis – 2
Biomolecules Chemical Analysis – 3
Primary and Secondary Metabolites – 1
Primary and Secondary Metabolites – 2
Biomacromolecules – 1
Biomacromolecules – 2
Polysaccharides – 1
Polysaccharides – 2
Nuclei Acids
Structure of Proteins – 1
Structure of Proteins – 2
Concept of Metabolism – 1
Concept of Metabolism – 2
Enzymes and Biocatalysts – 1
Enzymes and Biocatalysts – 2

10. Questions on Cell Cycle and Cell Division

The section contains questions on cell cycle, m phase and meiosis.

Cell Cycle
M Phase-1
M Phase-2

11. Questions & Answers on Transport in Plants

The section contains questions and answers on plants transportation basics, transport means, plant-water relations, water long distance transport, transpiration, mineral nutrients transport and phloem transport.

Transportation in Plants
Means of Transport
Plant-Water Relations-1
Plant-Water Relations-2
Long Distance Transport of Water
Transport of Mineral Nutrients
Phloem Transport

12. Questions on Mineral Nutrition


The section contains questions on plant mineral requirements, nutrients absorption mechanism and nitrigen metabolism.

Mineral Requirements of a Plant-1
Mineral Requirements of a Plant-2
Mechanism of Absorption of Nutrients-1
Mechanism of Absorption of Nutrients-2
Metabolism of Nitrigen-1
Metabolism of Nitrigen-2

13. Questions & Answers on Photosynthesis in Higher Plants

The section contains questions and answers on photosynthesis basics, plant cells photosynthesis sites, photosynthesis pigments, light reaction, electron transport, atp and nadph, c4 pathways, photorespiration and photosynthesis affecting factors.

Photosynthesis Basics – 1
Photosynthesis Basics – 2
Sites of Photosynthesis in a Plant Cells
Pigments Involved in Photosynthesis
Light Reaction
Electron Transport
C4 Pathways
Factors Affecting Photosynthesis

14. Questions on Respiration in Plants

The sections covers questions on plants respiration, glycolysis, fermentation, aerobic respiration, amphibolic pathway and respiratory quotient.

Respiration in Plants
Aerobic Respiration – 1
Aerobic Respiration – 2
Amphibolic Pathway
Respiratory Quotient

15. Questions & Answers on Plant Growth and Development

The section contains questions and answers on plants growth and development, differentiation, dedifferentiation and redifferentiation, growth regulators in plants, photoperiodism and vernalisation.

Growth and Development in Plants – 1
Growth and Development in Plants – 2
Differentiation, Dedifferentiation & Redifferentiation
Growth Regulators in Plants – 1
Growth Regulators in Plants – 2
Photoperiodism and Vernalisation

16. Questions on Digestion and Absorption

The section contains questions on digestive system, food digestion, digested products absorption and digestive system disorders.

Digestive System – 1
Digestive System – 2
Digestion of Food – 1
Digestion of Food – 2
Absorption of Digested Products
Disorders in Digestive System – 1
Disorders in Digestive System – 2

17. Questions & Answers on Breathing and Exchange of Gases

The section contains questions and answers on animals respiration, human respiratory system, breathing mechanism, respiratory system disorders, gases exchange and transport.

Respiration in Animals
Human Respiratory System – 1
Human Respiratory System – 2
Mechanism of Breathing – 1
Mechanism of Breathing – 2
Exchange of Gases
Transport of Gases
Disorders in Respiratory System

18. Questions on Body Fluids and Circulation

The section contains questions on body fluids and circulation basics, blood, human circulatory system, ecg, double circulation and circulatory system disorders.

Body Fluids and Circulation Basics
Blood – 1
Blood – 2
Human Circulatory System – 1
Human Circulatory System – 2
Double Circulation
Disorders in Circulatory System

19. Questions & Answers on Excretory Products and Elimination

The section contains questions and answers on animals excretory system, human excretory system, urine formation, tubules function, filtrate concentration mechanism, excretory system regulation and disorders.

Excretory System in Animals
Human Excretory System – 1
Human Excretory System – 2
Urine Formation – 1
Urine Formation – 2
Function of Tubules – 1
Function of Tubules – 2
Mechanism of Concentration of the Filtrate
Regulation of Excretory System
Disorders in Excretory System

20. Questions on Locomotion and Movement


The section contains questions on movement types, muscle, skeletal system, joints, muscular and skeletal system disorders.

Types of Movement
Muscle – 1
Muscle – 2
Skeletal System – 1
Skeletal System – 2
Disorders in Muscular and Skeletal System

21. Questions & Answers on Neural Control and Coordination

The section contains questions and answers on neural coordination basics, human neural system, neuron, cns, reflex action and arc, eye and ear.

Neural Coordination Basics
Human Neural System
Neuron – 1
Neuron – 2
Reflex Action and Reflex Arc
Eye – 1
Eye – 2
Ear – 1
Ear – 2

22. Questions on Chemical Control and Coordination

The section contains questions on endocrine glands and hormones, human endocrine system, hormone action mechanism, heart, kidney and gastrointestinal hormones.

Endocrine Glands and Hormones
Human Endocrine System – 1
Human Endocrine System – 2
Human Endocrine System – 3
Human Endocrine System – 4
Hormones of Heart, Kidney and Gastrointestinal
Mechanism of Hormone Action
If you would like to learn Biology thoroughly, you should attempt to work on the complete set of questions and answers mentioned above. It will immensely help anyone trying to crack an exam or an interview.

Wish you the best in your endeavor to learn and master Biology!

Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He is Linux Kernel Developer & SAN Architect and is passionate about competency developments in these areas. He lives in Bangalore and delivers focused training sessions to IT professionals in Linux Kernel, Linux Debugging, Linux Device Drivers, Linux Networking, Linux Storage, Advanced C Programming, SAN Storage Technologies, SCSI Internals & Storage Protocols such as iSCSI & Fiber Channel. Stay connected with him @ LinkedIn