Environment & Biodiversity MCQs

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Global warming is defined as the average increase of Earth’s temperature due to natural as well as human induced reasons. Global warming increases the average temperature of the Earth resulting in the melting of ice caps.

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The Paris Agreement aimed to hold the increase in global average temperature to well below 2 °C above pre industrial levels. Efforts were to be aimed to limit temperature increase to 1.5°C above pre-industrial levels.

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There are two components of Environment Impact Assessment, i.e., Comprehensive EIA and Rapid EIA. Rapid EIA is for speedier appraisal process. Comprehensive EIA collects data fwith respect to all four seasons.

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A cryogenic storage facility which is used to archive biological samples for use in research and experiments is known as Biobank. Biobanks are an important resource in medical research which support many types of contemporary research like genomics and personalized medicine.

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Biotic resources describe living or once living resources of a community; for example organisms, such as plants and animals wood, alkaloids, latex obtained from plant are also biotic resources. They are obtained from the biosphere and have life. The resources which are composed of non-living things are called Abiotic Resources. For example, water, minerals, metals, wind, solar energy etc.

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Around the world, there is an increasing trend in areas of land, surface waters and groundwater affected by contamination because of one reason or other. However in the last three decades a special interest in the world has aroused by the potential of using the biological methods in the waste water treatment. Water hyacinth (Eichhornia crassipes) constitutes an important part of an aquatic ecosystem. Water hyacinth as a very promising plant with tremendous application in wastewater treatment is already proved. Water hyacinth is used to treat waste water from dairies, tanneries, sugar factories, pulp and paper industries, palm oil mills, distilleries, etc.

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Photosynthesis in plants converts radiant energy from the sun into chemical energy in the form of glucose (sugar) using electrons and protons from water. Plants take in water, carbon dioxide, and sunlight and turn them into glucose and oxygen. Water (6H2O) + Carbon Dioxide (6CO2) + Sunlight (Radiant Energy) = Glucose (C6H12O6) + Oxygen (6O2).

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The greenhouse effect is the process by which radiation from a planet’s atmosphere warms the planet’s surface to a temperature above what it would be without its atmosphere. It caused by the presence of water vapour, carbon dioxide, methane, and certain other gases in the air.

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Jim Corbett believed in the conservation of the ecosystem and wildlife, especially tigers and that is why Jim Corbett National Park was chosen as the venue for the inauguration of ‘Save the tigers’ project in India. Project tiger was launched in 1973. Basic intention of Project Tiger is to maintain the ecological balance of nature and conserve extant ecosystems. The project seeks to establish a natural link between the wildlife & flora of national parks and sanctuaries and the humans living on their peripheries.

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The Great Dividing Range, home to a UNESCO World Heritage Site – the Wet Tropics of Queensland, exhibits an exceptional display of natural beauty, diverse species, and is soaked in evolutionary history. This region preserves the ancient Gondwanan forest of 50-100 million years ago, and is significant in deciphering the evolution of Australian flora and fauna. The range hosts over 400 threatened or rare species and indigenous communities have resided here for over 5,000 years. The highest Australian waterfall, Wallaman Falls, the 13 primary river systems, and multiple national parks are also part of this geography.