Class 11 Commerce Biology Quiz

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Class 11 Commerce Biology Summary

Class 11 Commerce 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 Commerce Biology MCQ Questions with Answers

Class 11 Commerce 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 Commerce 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 Commerce. Chapters include The Living World. Topics include Hydrological cycle, Taxonomy, binomial nomenclature, biodiversity, and classification systems, Medium.

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

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%

Step 1

Concept

Plants release around 99% of the water taken up by roots into the atmosphere as a byproduct of gas exchange.

Step 2

Why this answer is correct

The correct answer is B. लगभग 99% / About 99%. Plants release around 99% of the water taken up by roots into the atmosphere as a byproduct of gas exchange.

Step 3

Exam Tip

पौधों द्वारा अवशोषित जल का लगभग 99% भाग वाष्पोत्सर्जन द्वारा वायुमंडल में चला जाता है, केवल 1% का उपयोग वृद्धि में होता है।

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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?

Explanation opens after your attempt

Correct Answer

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

Step 1

Concept

Fog is a visible aerosol consisting of tiny water droplets suspended in the air near the Earth's surface, formed by condensation.

Step 2

Why this answer is correct

The correct answer is A. धरातल के निकट जलवाष्प का संघनन होना / Condensation of water vapor near the ground surface. Fog is a visible aerosol consisting of tiny water droplets suspended in the air near the Earth's surface, formed by condensation.

Step 3

Exam Tip

जब जमीन के ठीक ऊपर की हवा ठंडी हो जाती है, तो उसमें उपस्थित वाष्प छोटी बूंदों में संघनित होकर कोहरा बनाती है।

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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?

Explanation opens after your attempt

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

Step 1

Concept

Higher global temperatures increase the air's moisture capacity, accelerating global evaporation and destabilizing rainfall patterns.

Step 2

Why this answer is correct

The correct answer is B. वाष्पीकरण दर बढ़ने से चरम बाढ़ और सूखे की घटनाएं तेज हो रही हैं / Increased evaporation rates are intensifying extreme flood and drought events. Higher global temperatures increase the air's moisture capacity, accelerating global evaporation and destabilizing rainfall patterns.

Step 3

Exam Tip

तापमान बढ़ने से वाष्पीकरण तेज हो गया है, जिससे कहीं अत्यधिक बाढ़ तो कहीं सूखा पड़ रहा है।

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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?

Explanation opens after your attempt

Correct Answer

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

Step 1

Concept

Aquifers are recharged over time as precipitation infiltrates the topsoil and percolates down through the unsaturated zone.

Step 2

Why this answer is correct

The correct answer is B. अंतःस्यंदन और अंतःस्रवण (Infiltration and Percolation) / Infiltration and Percolation. Aquifers are recharged over time as precipitation infiltrates the topsoil and percolates down through the unsaturated zone.

Step 3

Exam Tip

वर्षा का पानी जब जमीन में रिसता है (Infiltration) और गहराई में जाता है (Percolation), तब भूजल का स्तर बढ़ता है।

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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?

Explanation opens after your attempt

Correct Answer

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

Step 1

Concept

Water vapor is a gaseous, invisible state of water that mixes with atmospheric dry air masses.

Step 2

Why this answer is correct

The correct answer is B. अदृश्य जलवाष्प के रूप में (Invisible gas) / As invisible water vapor. Water vapor is a gaseous, invisible state of water that mixes with atmospheric dry air masses.

Step 3

Exam Tip

जलवाष्प पानी की गैसीय अवस्था है जो अदृश्य होती है और हवा के अणुओं के बीच मौजूद रहती है।

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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?

Explanation opens after your attempt

Correct Answer

A. केवल वायुमंडलीय तापीय वृद्धिOnly atmospheric thermal increase

Step 1

Concept

The kinetic energy of runoff drives geological erosion, transporting soil minerals and nutrients along drainage paths into basins.

Step 2

Why this answer is correct

The correct answer is A. केवल वायुमंडलीय तापीय वृद्धि / Only atmospheric thermal increase. The kinetic energy of runoff drives geological erosion, transporting soil minerals and nutrients along drainage paths into basins.

Step 3

Exam Tip

जल चक्र केवल पानी का परिवहन नहीं करता बल्कि यह मृदा अपरदन और भू-रासायनिक चक्रों में भी मदद करता है।

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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?

Explanation opens after your attempt

Correct Answer

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

Step 1

Concept

Microscopic hygroscopic particles serve as condensation nuclei, offering surfaces for vapor molecules to change state into liquid.

Step 2

Why this answer is correct

The correct answer is B. वे संघनन नाभिक (Condensation nuclei) का कार्य करते हैं / They act as condensation nuclei. Microscopic hygroscopic particles serve as condensation nuclei, offering surfaces for vapor molecules to change state into liquid.

Step 3

Exam Tip

धूल, नमक और धुएं के सूक्ष्म कण हवा में संघनन नाभिक का कार्य करते हैं, जिन पर पानी की बूंदें जमा होती हैं।

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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?

Explanation opens after your attempt

Correct Answer

B. वर्षन (Precipitation)Precipitation

Step 1

Concept

Hail consists of balls or irregular lumps of ice, each called a hailstone, which is a solid form of precipitation.

Step 2

Why this answer is correct

The correct answer is B. वर्षन (Precipitation) / Precipitation. Hail consists of balls or irregular lumps of ice, each called a hailstone, which is a solid form of precipitation.

Step 3

Exam Tip

ओले गिरना वर्षन का ही एक ठोस रूप है, जो बादलों के भीतर अत्यधिक कम तापमान के कारण होता है।

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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?

Explanation opens after your attempt

Correct Answer

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

Step 1

Concept

Impervious urban surfaces block the natural infiltration pathway, transforming rainfall into rapid storm runoff and flash floods.

Step 2

Why this answer is correct

The correct answer is B. सतही अपवाह अत्यधिक बढ़ना जिससे शहरी बाढ़ आती है / Drastic increase in surface runoff causing urban flooding. Impervious urban surfaces block the natural infiltration pathway, transforming rainfall into rapid storm runoff and flash floods.

Step 3

Exam Tip

कंक्रीट की सड़कें और इमारतें पानी को जमीन में रिसने से रोकती हैं, जिससे शहरी बाढ़ का खतरा बढ़ता है।

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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?

Explanation opens after your attempt

Correct Answer

B. गुरुत्वाकर्षण बल (Gravitational force)Gravitational force

Step 1

Concept

Surface runoff and river channels always flow downhill due to gravity, eventually driving water back into oceanic basins.

Step 2

Why this answer is correct

The correct answer is B. गुरुत्वाकर्षण बल (Gravitational force) / Gravitational force. Surface runoff and river channels always flow downhill due to gravity, eventually driving water back into oceanic basins.

Step 3

Exam Tip

सतही अपवाह और नदियाँ गुरुत्वाकर्षण के कारण ढलान की ओर बहते हुए अंततः महासागरों में विलीन हो जाती हैं।

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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?

Explanation opens after your attempt

Correct Answer

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

Step 1

Concept

The phase transition of gas directly into a solid state is termed deposition or desublimation.

Step 2

Why this answer is correct

The correct answer is B. निक्षेपण या उप-संघनन (Deposition) / Deposition or desublimation. The phase transition of gas directly into a solid state is termed deposition or desublimation.

Step 3

Exam Tip

गैस का सीधे ठोस में बदलना निक्षेपण कहलाता है, जैसे उच्च बादलों में पाला या हिम क्रिस्टल बनना।

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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?

Explanation opens after your attempt

Correct Answer

B. जलभृत या एक्विफर (Aquifer)Aquifer

Step 1

Concept

An underground layer of permeable rock that yields groundwater to wells and springs is called an aquifer.

Step 2

Why this answer is correct

The correct answer is B. जलभृत या एक्विफर (Aquifer) / Aquifer. An underground layer of permeable rock that yields groundwater to wells and springs is called an aquifer.

Step 3

Exam Tip

भूजल से भरी हुई पारगम्य चट्टानों की परत को जलभृत या एक्विफर कहते हैं, जहाँ से कुओं का पानी आता है।

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

Concept

Why this answer is correct

Exam Tip

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

Concept

Why this answer is correct

Exam Tip

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

Concept

Why this answer is correct

Exam Tip

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

Concept

Why this answer is correct

Exam Tip

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

Concept

Why this answer is correct

Exam Tip

Concept

Why this answer is correct

Exam Tip

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

Concept

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Exam Tip

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

Concept

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Exam Tip

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

Concept

Why this answer is correct

Exam Tip

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

Concept

Why this answer is correct

Exam Tip

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

Concept

Why this answer is correct

Exam Tip

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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