UPSC Environment & Ecology Questions
416 questions with explanations
When the bark of a tree is removed in a circular fashion all around near its base, it gradually dries up and dies because
Consider the following:- 1) Carbon dioxide 2) Oxides of Nitrogen 3) Oxides of Sulphur Which of the above is/are the emission/emissions from coal combustion at …
Microbial fuel cells are considered a source of sustainable energy. Why? 1) They use living organisms as catalysts to generate electricity from certain substrat…
Three of the following criteria have contributed to the recognition of western Ghats-Sri Lanka and Indo-Burma regions as hotspots of biodiversity: 1) Species ri…
With reference to India, consider the following Central Acts: 1) Import and Export (Control) Act, 1947 2) Mining and Mineral Development (Regulation) Act, 1957 …
La Nina is suspected to have caused recent floods in Australia. How is La Nina different from El Nino? 1) La Nina is characterized by unusually cold ocean tempe…
There is a concern over the increase in harmful algal blooms in the seawaters of India. What could be the causative factors for this phenomenon? 1) Discharge of…
Microbial fuel cells are considered a source of sustainable energy. Why? 1) They use living organisms as catalysts to generate electricity from certain substrat…
Regarding "carbon credits", which one of the following statements is not correct?
A layer in the Earth's atmosphere called Ionosphere facilitates radio communication. Why? 1) The presence of ozone causes the reflection of radio waves to Earth…
The formation of ozone hole in the Antarctic region has been a cause of concern. What could be the reason for the formation of this hole?
Three of the following criteria have contributed to the recognition of Western Ghats-Sri Lanka and Indo-Burma regions as hotspots of biodiversity: Species richn…
If a tropical rain forest is removed, it does not regenerate quickly as compared to a tropical deciduous forest. This is because
A company marketing food products advertises that its items do not contain trans-fats. What does this campaign signify to the customers? 1) The food products ar…
Consider the following:- 1) Carbon dioxide 2) Oxides of Nitrogen 3) Oxides of Sulphur Which of the above is/are the emission/emissions from coal combustion at t…
Human activities in the recent past have caused the increased concentration of carbon dioxide in the atmosphere, but a lot of it does not remain in the lower at…
In the context of ecosystem productivity, marine upwelling zones are important as they increase the marine productivity by bringing the 1) Decomposer microorgan…
With reference to India, consider the following Central Acts: 1) Import and Export (Control) Act, 1947 2) Mines and Minerals (Development and Regulation) Act, 1…
A genetically engineered form of brinjal, known as the Bt-brinjal, has been developed. The objective of this is
There is a concern over the increase in harmful algal blooms in the seawaters of India. What could be the causative factors for this phenomenon? 1) Discharge of…