JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech II ENVIRONMENTAL STUDIES Previous Question Paper (December - 2018 - R15)
Part A is compulsory. Part B consists of 5 Units. Answer any one full question from each unit.
Part A
How does the ecosystem function?
Answer
An ecosystem functions through two primary processes: the flow of energy and the cycling of nutrients. Energy enters the system via sunlight, moves through trophic levels as organisms consume one another, and is eventually lost as heat, while nutrients are continuously recycled through biogeochemical cycles between biotic and abiotic components.
What is bioaccumulation? Mention its demerits.
Answer
Bioaccumulation is the gradual accumulation of substances, such as pesticides or heavy metals, in an organism's body over time because the rate of intake exceeds the rate of excretion or metabolism. Its demerits include toxicity, reproductive failure, disruption of endocrine systems, and biomagnification, where concentrations increase as they move up the food chain, posing severe risks to apex predators and human health.
Define human development index.
Answer
Sign in to view the complete answer paper.
What are the sources of pollution for surface water and ground water? Suggest few ways to reduce the pollutant levels.
Answer
Sign in to view the complete answer paper.
What is meant by genetic diversity?
Answer
Sign in to view the complete answer paper.
Define hotspots of bio-diversity. Give examples.
Answer
Sign in to view the complete answer paper.
What are the chemicals that cause ozone layer depletion?
Answer
Sign in to view the complete answer paper.
What are primary and secondary air pollutants? Give examples for each.
Answer
Sign in to view the complete answer paper.
Suggest the ways to handle and safe disposal of biomedical wastes from hospital.
Answer
Sign in to view the complete answer paper.
What is meant by ecological footprint? Mention its value for an individual at the global level.
Answer
Sign in to view the complete answer paper.
Part B
Describe the role of water cycle and carbon cycle in affecting the energy flow in the ecosystem.
Answer
Sign in to view the complete answer paper.
Explain the various components of terrestrial food pyramid and aquatic food pyramid.
Answer
Sign in to view the complete answer paper.
Discuss the environmental impacts of building the water reservoirs and dams.
Answer
Sign in to view the complete answer paper.
Discuss the significant factors that cause flooding and drought.
Answer
Sign in to view the complete answer paper.
Explain the principle involved in the generation of electricity using solar energy. What are the drawbacks of solar energy?
Answer
Sign in to view the complete answer paper.
Discuss the consumptive use value and productive use value of forest ecosystem in bio-diversity.
Answer
Sign in to view the complete answer paper.
Explain the reasons for habitat loss and man-wildlife conflicts within the ecosystem. Suggest the ways to reduce the effect.
Answer
Sign in to view the complete answer paper.
Describe the source, ill effects and control measures for the following classes of water pollutants: a) disease causing agents and b) oxygen depleting agents.
Answer
Sign in to view the complete answer paper.
Identify the sources, characteristics and environmental impacts of e-waste. Suggest the measures to be taken against the detrimental effects of electronic wastes.
Answer
Sign in to view the complete answer paper.
Explain the role of individuals to prevent domestic level water pollution.
Answer
Sign in to view the complete answer paper.
Discuss the regulations and guidelines framed in the water pollution control act.
Answer
Sign in to view the complete answer paper.
Enumerate the factors that contribute for population explosion.
Answer
Sign in to view the complete answer paper.
Describe the methods adopted to ensure low carbon life style in our day-to-day activities.
Answer
Sign in to view the complete answer paper.