BPSC CCE Prelims
Environmental Science Previous Year Questions (PYQs)
Showing solved Previous Year Questions for Chapter: Environmental Science
Topic Breakdown: Scroll →
Kanha National Park is established in -
Detailed Explanation:
Kanha National Park is located in Mandla and Balaghat districts of Madhya Pradesh.
Established as a wildlife sanctuary in 1955 and declared a national park in 1955, it became a Project Tiger reserve in 1973. Famous for Royal Bengal Tigers and barasingha (swamp deer), the park inspired Rudyard Kipling's "The Jungle Book".
The process of breaking down organic matter by microorganisms is called?
Detailed Explanation:
Decomposition is the natural process by which microorganisms (bacteria, fungi, actinomycetes) break down dead organic matter into simpler inorganic substances.
The process involves fragmentation, leaching, catabolism, humification, and mineralization, releasing nutrients like nitrogen, phosphorus, and carbon dioxide back into the ecosystem.
Biodegradable wastes can usually be converted into useful substance with the help of
Detailed Explanation:
Bacteria are the primary microorganisms responsible for decomposing biodegradable waste through natural processes like composting and anaerobic digestion, converting organic matter into useful substances like manure, biogas, and nutrients.
Viruses infect living cells and cannot decompose waste; nuclear proteins are cellular components with no role in waste breakdown; radioactive substances cause contamination rather than beneficial decomposition.
Therefore, bacteria are the agents of biodegradation, making Option 1 the correct answer.
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Insectivorous plants grow in soil deficient in
Detailed Explanation:
Insectivorous plants (e.g., Venus flytrap, pitcher plant, sundew) grow in nitrogen-deficient soils like bogs, marshes, and wetlands. They compensate by trapping and digesting insects to obtain nitrogen and other essential nutrients.
Water, magnesium, and calcium deficiencies do not trigger insectivory; these nutrients are obtained through roots in normal soils.
Therefore, insectivorous plants grow in nitrogen-deficient soil, making Option 3 the correct answer.