RRB JE Stage-II Ecology Quiz : 3rd July_00.1
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RRB JE Stage-II Ecology Quiz : 3rd July

Q1. All components and individuals in an ecosystem are
एक पारिस्थितिकी तंत्र के सभी घटक और व्यक्ति ___________ होते हैं
(a) individualistic / व्यक्तिगत
(b) independent/ स्वतंत्र
(c) interdependent/ अन्योन्याश्रित
(d) dispensable/ नगण्य

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S1. (c); All components of ecosystem are interdependent. Components of ecosystems depend upon each other for various activities like nutrient, habitat, survival etc.

Q2. The amount of energy as it passes on from one trophic level to other in an ecosystem
एक पारितंत्र में एक पौष्टिकता स्तर से दूसरे में जाने पर ऊर्जा की मात्रा में क्या होता है?
(a) increases/बढती है
(b) decreases/घटती है
(c) remains constant/समान रहती है
(d) none of these/इनमें से कोई नहीं

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S2. (b); The amount of energy in an ecosystem decreases as it passes from one trophic level to other. As for example, in a food chain not 100 percent of energy is transferred from one trophic level to the other as only a fraction of it is transferred and rest is lost to the atmosphere.

Q3. What term denotes the organisms getting their food from other?
जीव जो अपना भोजन दूसरे से प्राप्त करते हैं उसको क्या कहा जाता है?
(a) Heterotrophs/ विषमपोषणज
(b) Autotrophs / स्वपोषक
(c) Producers/ उत्पादक
(d) Synthesizers / सिंथेसाइज़र

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S3. (a); Heterotrophs are organisms that are dependent upon others for their food requirements. These organisms are commonly known as consumers and directly or indirectly dependent upon producers or green plants for their nutrient needs.

RRB JE Stage-II Ecology Quiz : 3rd July_50.1

Q4. The word ‘Ecology’ was coined in 1866 by
1866 में ‘इकोलॉजी’ शब्द किस के द्वारा दिया गया था?
(a) Charles Darwin/ चार्ल्स डार्विन
(b) Robert Whittaker/ रॉबर्ट व्हिटकर
(c) Arthur Tansley / आर्थर टैन्सले
(d) Ernst Haeckel/ अर्नस्ट हैकेल

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S4. (d); The term ecology was coined in 1866 by, Ernst Haeckel from the Greek word “oikos” meaning house and “logos” meaning study.

Q5. Which one of the following energies is most utilized in biomass?
निम्नलिखित ऊर्जाओं में से कौन सा एक बायोमास में सबसे अधिक उपयोग किया जाता है?
(a) Atomic energy / परमाणु ऊर्जा
(b) Solar energy/ सौर ऊर्जा
(c) Geothermal energy / भूतापीय ऊर्जा
(d) Tidal energy/ ज्वारीय ऊर्जा

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S5. (b); Solar energy is most utilized in biomass. It is the energy that is used by green plants to carry out photosynthesis and prepare food. The consumers are dependent upon producers for their food and it is accumulated in biomass.

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Q6. The term ‘ecosystem’ was enunciated by
‘पारिस्थितिक तंत्र’ शब्द का संयोजन किसके द्वारा किया गया था?
(a) C.C. Park/ सी.सी. पार्क
(b) G. Mendal / जी. मेंडल
(c) A.G. Tansley / ए जी टैन्सले
(d) E.P. Odum / ई.पी. ओदुम

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S6. (c); The term ecosystem was coined by A.G. Tansley. Ecosystem is the interaction of living organisms, with their physical environment in a particular unit of space.

Q7. Which one of the following is not included under the basic component of the environment?
निम्नलिखित में से कौन सा पर्यावरण के मूल घटक के तहत शामिल नहीं है?
(a) Abiotic component/ अजैव घटक
(b) Biotic component/ जैविक घटक
(c) Energy component/ ऊर्जा घटक
(d) Spatial component/ स्थानिक घटक

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S7. (d); Spatial component is not a part of the basic components of environment.

Q8. Which one of the following is not helpful in maintaining ecological stability?
निम्नलिखित में से कौन सा पारिस्थितिक स्थिरता बनाए रखने में सहायक नहीं है?
(a) Ecosystem complexity/ पारिस्थितिक तंत्र की जटिलता
(b) Ecosystem diversity/ पारिस्थितिकी तंत्र की विविधता
(c) Ecosystem uniformity / पारिस्थितिक तंत्र की एकरूपता
(d) Homeostatic mechanism / होमोस्टैटिक तंत्र

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S8. (c); Ecosystem uniformity is not helpful in ecological stability as it is more prone to vulnerability.

Q9. A pesticide which is a chlorinated hydrocarbon is sprayed on a food crop. The food chain is: Food crop – Rat – Snake – Hawk. In this food chain, the highest concentration of the pesticide would accumulate in which one of the following?
एक कीटनाशक एक क्लोरीनयुक्त हाइड्रोकार्बन है जिसे खाद्य फसल पर छिड़का जाता है। खाद्य श्रृंखला है: खाद्य फसल – चूहा – साँप – हॉक। इस खाद्य श्रृंखला में, कीटनाशक की उच्चतम सांद्रता निम्नलिखित में से किसमें जमा होती है?
(a) Food crop/ खाद्य फसल
(b) Rat/ चूहा
(c) Snake / साँप
(d) Hawk/ हॉक

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S9. (d); Highest concentration of pesticide will accumulate in species which is on top of the food chain. In this case it is the hawk in which highest pesticide concentration will accumulate due to biomagnification.

Q10. Consider the following statements
निम्नलिखित कथनों पर विचार करें
1. In ecology, an ecosystem is a naturally occurring assemblage of organism (plant, animal and other living organism – also referred to as a biotic community or biocoenosis) living together with their environment (or biotope), function as a unit of sorts.
पारिस्थितिकी में, एक पारिस्थितिकी तंत्र एक प्राकृतिक रूप से पाए जाने वाले जीवों(पौधा, पशु और अन्य जीवित जीव – जिन्हें एक जैव समुदाय या बायोकेनोसिस के रूप में भी जाना जाता है) का एक संयोजन है जो अपने पर्यावरण (या बायोटोप) के साथ रहते हैं, एक प्रकार की इकाई के रूप में कार्य करते हैं।
2. The term “ecosystem” first coined by Arthur Tansely. / शब्द “इकोसिस्टम” पहली बार आर्थर टैन्सले द्वारा दिया गया था
Which of the statements given above is/are correct?
ऊपर दिए गए कथनों में से कौन सा सही है?
(a) Only 1/केवल 1
(b) Only 2/केवल 2
(c) Both 1 and 2/1 और 2 दोनों
(d) Neither 1 nor 2/न तो 1 और न ही 2

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S10. (c); Ecosystem is the interaction of living organisms with their non-living physical environment. The term ecosystem was coined by A.G. Tansley.

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