RRB JE Stage-II Ecology Quiz : 25th June

Q1. The minimum area of the land required to completely sustain the life of one person is called his
किसी व्यक्ति के जीवन को पूरी तरह से बनाए रखने के लिए आवश्यक भूमि का न्यूनतम क्षेत्र किसे कहा जाता है?
(a) Biota/ बायोटा
(b) Biome/ बायोम
(c) Ecological foot print/ पारिस्थितिक पदचिह्न
(d) Niche/ आला

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S1. (c): Ecological footprint is the minimum area of land which is required to completely sustain the life on an individual or a population. It actually measures the demands made by a person or group of people on global natural resources.

Q2. Biosphere reserves are areas to preserve
जीवमंडल भंडार किसे संरक्षित करने वाले क्षेत्र हैं?
(a) Grassland/ घास स्थल
(b) Agricultural produce / कृषि उपज
(c) Atmospheric balance/ वायुमंडलीय संतुलन
(d) Genetic diversity/ आनुवंशिक विविधता

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S2. (d): Biosphere reserves are one of the areas for onsite conservation of genetic resources in natural populations of plant or animal species. National Parks, Sanctuaries, and Reserve Forests are other areas in this category.

Q3. Solar radiation plays the most important role in the
सौर विकिरण किसमें सबसे महत्वपूर्ण भूमिका निभाता है?
(a) Carbon cycle/ कार्बन चक्र
(b) Oxygen cycle/ ऑक्सीजन चक्र
(c) Water cycle/ जल चक्र
(d) Nitrogen cycle/ नाइट्रोजन चक्र

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S3. (c); Solar radiation plays an important role in the water cycles. It helps in evaporation of water from several places like ocean, ponds etc. It also facilitates melting of glaciers, Ice-caps and other snow laden areas which contribute to water cycle.

Q4. The author of Green Development is:
हरित विकास के लेखक कौन हैं?
(a) M.J. Bradshaw/ एम जे ब्रैडशॉ
(b) M. Nicolson / एम निकोलसन
(c) R.H. Whittaker/ आर.एच. व्हिटेकर
(d) W.M. Adams / डब्ल्यू एम एडम्स

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S4. (d): William M. Adams is the author of Green Development. The book provides a clear and coherent analysis of sustainable development in both theory and practice.

Q5. Among the biotic components of the ecosystem, the producer system is
पारिस्थितिक तंत्र के जैविक घटकों में उत्पादक प्रणाली कौन है?
(a) Cow/गाय
(b) Peacock/मोर
(c) Tiger/ बाघ
(d) Green plants/ हरे पौधे

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S5. (d); Green plants act as producers in the ecosystem. Due to process of photosynthesis green plants produce their own food and known as autotrophs. Animals are categorized as consumers in the ecosystem and are dependent upon producers for nutrients.

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Q6. The concept of the ecological niche was first introduced by
पारिस्थितिक आला की अवधारणा सबसे पहले किसके द्वारा शुरू की गई थी?
(a) C.C. Park/ सी.सी. पार्क
(b) E.P. Odum/ ई.पी. ओदुम
(c) J. Grinnell/ जे. ग्रिनेल
(d) G.E. Hutchinson/ जी.ई. हचिंसन

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S6. (c); Joseph Grinnell was the first person to introduce the concept of ecological niche use in his 1917 paper titled. “The niche relationships of the California Thrasher”.

Q7. Biotic component of the environment does not include
पर्यावरण के जैविक घटक में क्या शामिल नहीं है?
(a) soil system/ मृदा प्रणाली
(b) animal system / पशु प्रणाली
(c) micro-organism system/ सूक्ष्म जीव प्रणाली
(d) plant system/ संयंत्र प्रणाली

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S7. (a); Biotic component of the environment does not include soil system as it is a non-biotic (non-living) component. Animal system, Plant system and microorganism system are part of biotic (living) component.

Q8. Higher order biotic level includes
उच्च क्रम बायोटिक स्तर में क्या शामिल होता हैं?
(a) population /जनसंख्या
(b) cells/ कोशिकाएं
(c) genes/ जीन
(d) tissues/ ऊतक

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S8. (a); Population represents one of the higher order biotic level. It is defined as group of individuals of a given species that live in a specific geographic area at a given time.

Q9. Which one of the following is a part of Geological cycle?
निम्नलिखित में से क्या भूवैज्ञानिक चक्र का एक हिस्सा है?
(a) Carbon cycle/ कार्बन चक्र
(b) Hydrogen cycle/ हाइड्रोजन चक्र
(c) Hydrological cycle/ हाइड्रोलॉजिकल चक्र
(d) Nitrogen cycle/ नाइट्रोजन चक्र

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S9. (c); Hydrological cycle is a part of geological cycle. It is related with the origin, distribution, and properties of water on the globe. It involves movement of water in continuous processes like evaporation, precipitation and runoff which starts from water bodies such as oceans, rivers etc. Carbon cycle, hydrogen cycle and nitrogen cycle are types of biogeochemical cycles.

Q10. An Artificial ecosystem is represented by
एक कृत्रिम पारिस्थितिकी तंत्र का प्रतिनिधित्व किसके द्वारा किया जाता है?
(a) Agriculture land/ कृषि भूमि
(b) Pisciculture tank/ मछलीपालन टैंक
(c) Zoo/ चिड़ियाघर
(d) Aquarium / मछलीघर

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S10. (d); Aquarium represents artificial ecosystem. These ecosystems are created by humans to mimic the natural ecosystems.

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