Environment & Biodiversity MCQs

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Impact prediction in EIA is a method of mapping the environmental impacts of the significant aspects of the project and its alternatives. Environmental impact can never be predicted with absolute certainty.

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Carbon Diet refers to reducing the impact on climate change by reducing greenhouse gas production especially CO2 , without lowering their standard of living. A low-carbon diet involves making lifestyle choices related to food consumption which reduce resulting greenhouse gas emissions (GHGe).

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Biocapacity refers to capacity of an area to provide resources and absorb wastes at the same time. When an area’s ecological footprint exceeds its biocapacity it results into unsustainability.

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The growing of evergreen and deciduous trees together form the mixed forests.

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The trees of mangrove forest having
breathing roots, which are usually very large to stand in deep mud. The necessity of Mangrove having breathing roots is to obtain oxygen from the atmosphere, while the soil in which mangroves grow are poor in oxygen.

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The dodo (Raphus cucullatus) is an extinct flightless bird that was endemic to the island of Mauritius, east of Madagascar in the Indian Ocean. Subfossil remains show the dodo was about 1 metre (3ft 3 inches) tall and may have weighed 10.6–17.5 kg (23– 39 lb) in the wild. The closest living relative of the dodo is the Nicobar pigeon.

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Forests are home to a large number of plants and animals. They are the “green lungs” and serve as water purifying systems of nature. In a forest, there are various types of interactions that occur between the living and the non-living components. The oxygen released during photosynthesis is used by the animals for respiration. In this way, plants and animals help in maintaining the balance of oxygen and carbon dioxide in the atmosphere. Therefore, forests can be considered as a dynamic living entity.

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In any ecosystem, there is conversion of inorganic into organic material with the help of the radiant energy of the sun by the autotrophs; consumption of the autotrophs by heterotrophs; decomposition and mineralisation of the dead matter to release them back for reuse by the autotrophs, these events are repeated over and over again. There is unidirectional movement of energy towards the higher trophic levels and its dissipation and loss as heat to the environment.

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The Gold Panda is the highest conservation award by the World Wide Fund for Nature (WWF), the leading global environmental organisation. WWF is an international non-governmental organization founded in 1961, working in the field of the wilderness preservation, and the reduction of humanity’s footprint on the environment.

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The Okavango Delta in Botswana was inscribed as the 1000th UNESCO World Heritage Site in 2014. This inland delta, formed by the Okavango River, spans 6-15,000 square kilometers undergoing seasonal flooding. It is a refuge for over 260,000 mammals and 400 bird species, including endangered species. The delta’s unique ecosystem provides a source of fresh water, food, and job opportunities through tourism while supporting indigenous communities. Ensuring biodiversity and sustainable livelihoods is the focus of the 2008 Okavango Delta Management Plan. With over 150,000 islands, Chief’s Island is the largest, demonstrating the delta’s exceptional natural beauty and ecological significance.