Class 11 Science Biology Quiz

Biology MCQ Questions for Class 11

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Class 11 Science Biology Summary

Class 11 Science Biology MCQ questions with answers, chapter wise quiz, topic wise practice, objective questions, exam revision aur answer explanation ke liye ye page banaya gaya hai. Biology me life processes, cell structure, genetics, plant and human physiology, ecology aur reproduction jaise concepts ko exam-friendly tarike se revise karein.

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Class 11 Science Biology MCQ Questions with Answers

Class 11 Science Biology ke liye chapter wise MCQ questions, topic wise practice, objective questions, quiz levels, correct answers aur simple explanations ek hi page par available hain. Students board exam revision, school test preparation, daily practice aur concept clarity ke liye yahan se focused practice start kar sakte hain.

Biology MCQ Class 11 Science Biology Questions Chapter Wise Quiz Topic Wise Practice Answers and Explanations Easy to Expert Levels

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Biology Chapters for Class 11

Choose a Biology chapter to practice focused MCQs with topic-wise revision, answers and explanations for Class 11 Science. Chapters include The Living World, Biological Classification, Plant Kingdom, Animal Kingdom. Topics include Taxonomy, binomial nomenclature, biodiversity, and classification systems, Hydrological cycle, Medium, Five-kingdom classification.

1 The Living World Biology The Living World MCQ practice for Class 11 Science with topic-wise questions, correct answers and simple explanations. 1Taxonomy, binomial nomenclature202 Q 2biodiversity, and classification systems99 Q 3Hydrological cycle295 Q 4Medium4 Q Easy 400 Medium 200 Hard 0 Expert 0 600 MCQs

2 Biological Classification Biology Biological Classification MCQ practice for Class 11 Science with topic-wise questions, correct answers and simple explanations. 1Five-kingdom classification 2viruses, viroids, and prions Easy 0 Medium 0 Hard 0 Expert 0 0 MCQs

3 Plant Kingdom Biology Plant Kingdom MCQ practice for Class 11 Science with topic-wise questions, correct answers and simple explanations. 1Features of Algae 2Bryophytes 3Pteridophytes 4Gymnosperms classification. Easy 0 Medium 0 Hard 0 Expert 0 0 MCQs

4 Animal Kingdom Biology Animal Kingdom MCQ practice for Class 11 Science with topic-wise questions, correct answers and simple explanations. 1Animal classification based on fundamental features 2non-chordates 3chordates Easy 0 Medium 0 Hard 0 Expert 0 0 MCQs

5 Morphology of Flowering Plants Biology Morphology of Flowering Plants MCQ practice for Class 11 Science with topic-wise questions, correct answers and simple explanations. 1Structural details of roots 2stems 3leaves 4flowers 5fruits 6seeds Easy 0 Medium 0 Hard 0 Expert 0 0 MCQs

6 Anatomy of Flowering Plants Biology Anatomy of Flowering Plants MCQ practice for Class 11 Science with topic-wise questions, correct answers and simple explanations. 1Meristematic/permanent tissues 2internal anatomy of vascular plants Easy 0 Medium 0 Hard 0 Expert 0 0 MCQs

7 Structural Organisation in Animals Biology Structural Organisation in Animals MCQ practice for Class 11 Science with topic-wise questions, correct answers and simple explanations. 1Morphology and Anatomy of Earthworm 2Animal tissues 3Cockroach 4Frog Easy 0 Medium 0 Hard 0 Expert 0 0 MCQs

8 Cell – The Unit of Life Biology Cell – The Unit of Life MCQ practice for Class 11 Science with topic-wise questions, correct answers and simple explanations. 1Cell Theory 2Prokaryotic & Eukaryotic cells 3Cell Organelles 4Endomembrane system 5Nucleus 6Cytoskeleton Easy 0 Medium 0 Hard 0 Expert 0 0 MCQs

9 Biomolecules Biology Biomolecules MCQ practice for Class 11 Science with topic-wise questions, correct answers and simple explanations. 1Carbohydrates 2Proteins 3Lipids 4Nucleic Acids 5Enzymes 6Metabolism Easy 0 Medium 0 Hard 0 Expert 0 0 MCQs

10 Cell Cycle and Cell Division Biology Cell Cycle and Cell Division MCQ practice for Class 11 Science with topic-wise questions, correct answers and simple explanations. 1Phases of Cell Cycle 2Mitosis 3Meiosis 4biological significance Easy 0 Medium 0 Hard 0 Expert 0 0 MCQs

11 Photosynthesis in Higher Plants Biology Photosynthesis in Higher Plants MCQ practice for Class 11 Science with topic-wise questions, correct answers and simple explanations. 1Site of photosynthesis 2Pigments 3Light and Dark reactions 4C₃ and C₄ pathways 5Photorespiration Easy 0 Medium 0 Hard 0 Expert 0 0 MCQs

12 Respiration in Plants Biology Respiration in Plants MCQ practice for Class 11 Science with topic-wise questions, correct answers and simple explanations. 1Cellular respiration 2Glycolysis 3Fermentation 4Krebs cycle 5Electron Transport System 6Amphibolic pathways Easy 0 Medium 0 Hard 0 Expert 0 0 MCQs

13 Plant Growth and Development Biology Plant Growth and Development MCQ practice for Class 11 Science with topic-wise questions, correct answers and simple explanations. 1Seed germination 2Plant growth regulators 3Photoperiodism 4Vernalization Easy 0 Medium 0 Hard 0 Expert 0 0 MCQs

14 Breathing and Exchange of Gases Biology Breathing and Exchange of Gases MCQ practice for Class 11 Science with topic-wise questions, correct answers and simple explanations. 1Respiratory organs 2Mechanism of breathing 3Regulation of respiration 4Respiratory volumes 5Disorders Easy 0 Medium 0 Hard 0 Expert 0 0 MCQs

15 Body Fluids and Circulation Biology Body Fluids and Circulation MCQ practice for Class 11 Science with topic-wise questions, correct answers and simple explanations. 1Composition of blood 2Human circulatory system 3Cardiac cycle 4Electrocardiogram 5Double circulation 6Disorders of the circulatory system Easy 0 Medium 0 Hard 0 Expert 0 0 MCQs

16 Excretory Products and Their Elimination Biology Excretory Products and Their Elimination MCQ practice for Class 11 Science with topic-wise questions, correct answers and simple explanations. 1Modes of excretion 2Human excretory system 3Urine formation 4Osmoregulation 5Role of other organs 6Disorders Easy 0 Medium 0 Hard 0 Expert 0 0 MCQs

17 Locomotion and Movement Biology Locomotion and Movement MCQ practice for Class 11 Science with topic-wise questions, correct answers and simple explanations. 1Types of movement 2Muscle structure and contraction 3Skeletal system 4Joints 5Disorders Easy 0 Medium 0 Hard 0 Expert 0 0 MCQs

18 Neural Control and Coordination Biology Neural Control and Coordination MCQ practice for Class 11 Science with topic-wise questions, correct answers and simple explanations. 1Neuron structure 2Nerve impulse generation and conduction 3Central nervous system 4Peripheral nervous system 5Sense organs Easy 0 Medium 0 Hard 0 Expert 0 0 MCQs

19 Chemical Coordination and Integration Biology Chemical Coordination and Integration MCQ practice for Class 11 Science with topic-wise questions, correct answers and simple explanations. 1Endocrine glands and hormones 2Mechanism of hormone action 3Hypothalamus 4Pituitary 5Thyroid 6Adrenal 7Pancreas 8Gonads Easy 0 Medium 0 Hard 0 Expert 0 0 MCQs

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1 Level 1 Ready 50/50 Topics in this level Hydrological cycle49 Q Medium1 Q 2 Level 2 Ready 50/50 Topics in this level Hydrological cycle48 Q medium2 Q 3 Level 3 Ready 50/50 Topics in this level Hydrological cycle49 Q medium1 Q 4 Level 4 Ready 50/50 Topics in this level Hydrological cycle50 Q 5 Level 5 Locked 0/50 6 Level 6 Locked 0/50 7 Level 7 Locked 0/50 8 Level 8 Locked 0/50 9 Level 9 Locked 0/50 10 Level 10 Locked 0/50 11 Level 11 Locked 0/50 12 Level 12 Locked 0/50 13 Level 13 Locked 0/50 14 Level 14 Locked 0/50 15 Level 15 Locked 0/50 16 Level 16 Locked 0/50 17 Level 17 Locked 0/50 18 Level 18 Locked 0/50 19 Level 19 Locked 0/50 20 Level 20 Locked 0/50

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Question 1/50 Medium Biology The Living World Hydrological cycle Class 11 Level 4

पौधों की जड़ों द्वारा अवशोषित जल का कितना प्रतिशत भाग वाष्पोत्सर्जन द्वारा हवा में उड़ा दिया जाता है?

What approximate percentage of water absorbed by plant roots is lost to the atmosphere via transpiration?

Explanation opens after your attempt

Correct Answer

B. लगभग 99%About 99%

Explanation

Simple Explanation

पौधों द्वारा अवशोषित जल का लगभग 99% भाग वाष्पोत्सर्जन द्वारा वायुमंडल में चला जाता है, केवल 1% का उपयोग वृद्धि में होता है। / Plants release around 99% of the water taken up by roots into the atmosphere as a byproduct of gas exchange.

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Question 2/50 Medium Biology The Living World Hydrological cycle Class 11 Level 4

कोहरा (Fog) जल चक्र की किस भौतिक अवस्था के परिवर्तन को प्रदर्शित करता है?

Fog represents which physical state transition condition within the water cycle?

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Correct Answer

A. धरातल के निकट जलवाष्प का संघनन होनाCondensation of water vapor near the ground surface

Explanation

Simple Explanation

जब जमीन के ठीक ऊपर की हवा ठंडी हो जाती है, तो उसमें उपस्थित वाष्प छोटी बूंदों में संघनित होकर कोहरा बनाती है। / Fog is a visible aerosol consisting of tiny water droplets suspended in the air near the Earth's surface, formed by condensation.

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Question 3/50 Medium Biology The Living World Hydrological cycle Class 11 Level 4

वैश्विक तापमान ($Global\ Warming$) के बढ़ने से जल चक्र की गति पर क्या मुख्य प्रभाव पड़ रहा है?

What primary effect is global warming having on the velocity of the water cycle?

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Correct Answer

B. वाष्पीकरण दर बढ़ने से चरम बाढ़ और सूखे की घटनाएं तेज हो रही हैंIncreased evaporation rates are intensifying extreme flood and drought events

Explanation

Simple Explanation

तापमान बढ़ने से वाष्पीकरण तेज हो गया है, जिससे कहीं अत्यधिक बाढ़ तो कहीं सूखा पड़ रहा है। / Higher global temperatures increase the air's moisture capacity, accelerating global evaporation and destabilizing rainfall patterns.

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Question 4/50 Medium Biology The Living World Hydrological cycle Class 11 Level 4

भूजल जलभृतों (Aquifers) का प्राकृतिक रूप से पुनः भराव (Recharge) मुख्य रूप से किन दो प्रक्रियाओं द्वारा होता है?

The natural recharging of underground aquifers occurs primarily through which two combined processes?

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Correct Answer

B. अंतःस्यंदन और अंतःस्रवण (Infiltration and Percolation)Infiltration and Percolation

Explanation

Simple Explanation

वर्षा का पानी जब जमीन में रिसता है (Infiltration) और गहराई में जाता है (Percolation), तब भूजल का स्तर बढ़ता है। / Aquifers are recharged over time as precipitation infiltrates the topsoil and percolates down through the unsaturated zone.

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Question 5/50 Medium Biology The Living World Hydrological cycle Class 11 Level 4

जल चक्र में जल का गैसीय रूप ($Water\ Vapor$) हवा में किस रूप में संचित रहता है?

In what form is the gaseous phase of water stored in the air within the water cycle ecosystem?

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Correct Answer

B. अदृश्य जलवाष्प के रूप में (Invisible gas)As invisible water vapor

Explanation

Simple Explanation

जलवाष्प पानी की गैसीय अवस्था है जो अदृश्य होती है और हवा के अणुओं के बीच मौजूद रहती है। / Water vapor is a gaseous, invisible state of water that mixes with atmospheric dry air masses.

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Question 6/50 Medium Biology The Living World Hydrological cycle Class 11 Level 4

नदियों द्वारा पहाड़ों से उपजाऊ मिट्टी और लवणों को बहाकर मैदानों में लाना जल चक्र के किस प्रभाव को प्रदर्शित करता है?

Rivers washing fertile soil and salts from mountains to plains demonstrates which effect of the water cycle?

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Correct Answer

A. केवल वायुमंडलीय तापीय वृद्धिOnly atmospheric thermal increase

Explanation

Simple Explanation

जल चक्र केवल पानी का परिवहन नहीं करता बल्कि यह मृदा अपरदन और भू-रासायनिक चक्रों में भी मदद करता है। / The kinetic energy of runoff drives geological erosion, transporting soil minerals and nutrients along drainage paths into basins.

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Question 7/50 Medium Biology The Living World Hydrological cycle Class 11 Level 4

वायुमंडल में जलवाष्प के संघनित होने के लिए धूल और नमक के सूक्ष्म कणों की उपस्थिति क्यों आवश्यक है?

Why is the presence of microscopic dust and salt particles necessary for water vapor to condense in the atmosphere?

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Correct Answer

B. वे संघनन नाभिक (Condensation nuclei) का कार्य करते हैंThey act as condensation nuclei

Explanation

Simple Explanation

धूल, नमक और धुएं के सूक्ष्म कण हवा में संघनन नाभिक का कार्य करते हैं, जिन पर पानी की बूंदें जमा होती हैं। / Microscopic hygroscopic particles serve as condensation nuclei, offering surfaces for vapor molecules to change state into liquid.

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Question 8/50 Medium Biology The Living World Hydrological cycle Class 11 Level 4

ओलावृष्टि (Hailstorms) जल चक्र के किस चरण का एक विशेष ठोस रूप प्रदर्शित करती है?

Hailstorms represent a special solid form of which stage of the water cycle?

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Correct Answer

B. वर्षन (Precipitation)Precipitation

Explanation

Simple Explanation

ओले गिरना वर्षन का ही एक ठोस रूप है, जो बादलों के भीतर अत्यधिक कम तापमान के कारण होता है। / Hail consists of balls or irregular lumps of ice, each called a hailstone, which is a solid form of precipitation.

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Question 9/50 Medium Biology The Living World Hydrological cycle Class 11 Level 4

शहरीकरण के कारण अंतःस्यंदन (Infiltration) दर घटने से शहरों में किस गतिक चक्र की समस्या उत्पन्न होती है?

A decrease in the infiltration rate due to urbanization creates which dynamic cycle issue in cities?

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Correct Answer

B. सतही अपवाह अत्यधिक बढ़ना जिससे शहरी बाढ़ आती हैDrastic increase in surface runoff causing urban flooding

Explanation

Simple Explanation

कंक्रीट की सड़कें और इमारतें पानी को जमीन में रिसने से रोकती हैं, जिससे शहरी बाढ़ का खतरा बढ़ता है। / Impervious urban surfaces block the natural infiltration pathway, transforming rainfall into rapid storm runoff and flash floods.

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Question 10/50 Medium Biology The Living World Hydrological cycle Class 11 Level 4

नदियों और झीलों का पानी अंततः ढलान की ओर बहते हुए महासागरों में विलीन होना किस बल के कारण संभव है?

The water from rivers and lakes eventually merging into oceans while flowing downhill is possible due to which force?

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Correct Answer

B. गुरुत्वाकर्षण बल (Gravitational force)Gravitational force

Explanation

Simple Explanation

सतही अपवाह और नदियाँ गुरुत्वाकर्षण के कारण ढलान की ओर बहते हुए अंततः महासागरों में विलीन हो जाती हैं। / Surface runoff and river channels always flow downhill due to gravity, eventually driving water back into oceanic basins.

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Question 11/50 Medium Biology The Living World Hydrological cycle Class 11 Level 4

जब जलवाष्प वायुमंडल में बिना तरल अवस्था में आए सीधे बर्फ के क्रिस्टल में बदल जाती है, तो उसे क्या कहते हैं?

When water vapor turns directly into ice crystals in the atmosphere without transitioning through a liquid phase, what is it called?

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Correct Answer

B. निक्षेपण या उप-संघनन (Deposition)Deposition or desublimation

Explanation

Simple Explanation

गैस का सीधे ठोस में बदलना निक्षेपण कहलाता है, जैसे उच्च बादलों में पाला या हिम क्रिस्टल बनना। / The phase transition of gas directly into a solid state is termed deposition or desublimation.

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Question 12/50 Medium Biology The Living World Hydrological cycle Class 11 Level 4

भूमि के भीतर पानी से भरी पारगम्य चट्टानों की उस विस्तृत परत को क्या कहा जाता है जो प्राकृतिक कुओं का आधार है?

What is that extensive underground layer of water-bearing permeable rock called, which forms the basis of natural wells?

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Correct Answer

B. जलभृत या एक्विफर (Aquifer)Aquifer

Explanation

Simple Explanation

भूजल से भरी हुई पारगम्य चट्टानों की परत को जलभृत या एक्विफर कहते हैं, जहाँ से कुओं का पानी आता है। / An underground layer of permeable rock that yields groundwater to wells and springs is called an aquifer.

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पौधों की जड़ों द्वारा अवशोषित जल का कितना प्रतिशत भाग वाष्पोत्सर्जन द्वारा हवा में उड़ा दिया जाता है?

Simple Explanation

कोहरा (Fog) जल चक्र की किस भौतिक अवस्था के परिवर्तन को प्रदर्शित करता है?

Simple Explanation

वैश्विक तापमान ($Global\ Warming$) के बढ़ने से जल चक्र की गति पर क्या मुख्य प्रभाव पड़ रहा है?

Simple Explanation

भूजल जलभृतों (Aquifers) का प्राकृतिक रूप से पुनः भराव (Recharge) मुख्य रूप से किन दो प्रक्रियाओं द्वारा होता है?

Simple Explanation

जल चक्र में जल का गैसीय रूप ($Water\ Vapor$) हवा में किस रूप में संचित रहता है?

Simple Explanation

Simple Explanation

वायुमंडल में जलवाष्प के संघनित होने के लिए धूल और नमक के सूक्ष्म कणों की उपस्थिति क्यों आवश्यक है?

Simple Explanation

ओलावृष्टि (Hailstorms) जल चक्र के किस चरण का एक विशेष ठोस रूप प्रदर्शित करती है?

Simple Explanation

शहरीकरण के कारण अंतःस्यंदन (Infiltration) दर घटने से शहरों में किस गतिक चक्र की समस्या उत्पन्न होती है?

Simple Explanation

नदियों और झीलों का पानी अंततः ढलान की ओर बहते हुए महासागरों में विलीन होना किस बल के कारण संभव है?

Simple Explanation

जब जलवाष्प वायुमंडल में बिना तरल अवस्था में आए सीधे बर्फ के क्रिस्टल में बदल जाती है, तो उसे क्या कहते हैं?

Simple Explanation

भूमि के भीतर पानी से भरी पारगम्य चट्टानों की उस विस्तृत परत को क्या कहा जाता है जो प्राकृतिक कुओं का आधार है?

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