Environment questions from UPSC 2021

Question 1 · Animal Biology

Which one of the following is a filter feeder?

Question 2 · Environmental Regulations & Standards

'R2 Code of Practices' constitutes a tool available for promoting the adoption of

Question 3 · Biogeochemical Cycles

In case of which one of the following biogeochemical cycles, the weathering of rocks is the main source of release of nutrient to enter the cycle?

Question 4 · Carbon Sequestration

What is blue carbon?

Question 5 · Ecological Roles

Which of the following are detritivores? 1. Earthworms 2. Jellyfish 3. Millipedes 4. Seahorses 5. Woodlice Select the correct answer using the code given below.

Question 6 · Ecology

Consider the following kinds of organisms : 1. Copepods 2. Cyanobacteria 3. Diatoms 4. Foraminifera Which of the above are primary producers in the food chains of oceans?

Question 7 · Environmental Governance

The 'Common Carbon Metric', supported by UNEP, has been developed for

Question 8 · Ecology

The vegetation of savannah consists of grassland with scattered small trees, but extensive areas have no trees. The forest development in such areas is generally kept in check by one or more...

Question 9 · Plant & Fungi Ecology

In the nature, which of the following is/are most likely to be found surviving on a surface without soil? 1. Fern 2. Lichen 3. Moss 4. Mushroom Select the correct answer using the code given...

Question 10 · Environmental Initiatives / Social Sector

With reference to 'WaterCredit', consider the following statements : 1. It puts microfinance tools to work in the water and sanitation sector. 2. It is a global initiative launched under the...

Question 11 · International Environmental Agreements

With reference to the 'New York Declaration on Forests', which of the following statements are correct? 1. It was first endorsed at the United Nations Climate Summit in 2014. 2. It endorses...

Question 12 · Agriculture

How is permaculture farming different from conventional chemical farming? 1. Permaculture farming discourages monocultural practices but in conventional chemical farming, monoculture practic...

Question 13 · Environmental Chemistry

'Triclosan', considered harmful when exposed to high levels for a long time, is most likely present in which of the following?

Question 14 · Botany

Consider the following statements : 1. Moringa (drumstick tree) is a leguminous evergreen tree. 2. Tamarind tree is endemic to South Asia. 3. In India, most of the tamarind is collected as m...

Question 15 · Industrial Pollution

Why is there a concern about copper smelting plants? 1. They may release lethal quantities of carbon monoxide into environment. 2. The copper slag can cause the leaching of some heavy metals...

Question 16 · Biological Interactions

Which of the following have species that can establish symbiotic relationship with other organisms? 1. Cnidarians 2. Fungi 3. Protozoa Select the correct answer using the code given below.

Question 17 · Fossil Fuels & Pollution

With reference to furnace oil, consider the following statements : 1. It is a product of oil refineries. 2. Some industries use it to generate power. 3. Its use causes sulphur emissions into...

Question 18 · Animal Adaptations

Consider the following animals : 1. Hedgehog 2. Marmot 3. Pangolin To reduce the chance of being captured by predators, which of the above organisms rolls up/roll up and protects/protect its...

Question 19 · Environmental Chemistry

Bisphenol A (BPA), a cause of concern, is a structural/key component in the manufacture of which of the following kinds of plastics?

Question 20 · Environmental Pollutants & Health Impacts

Magnetite particles, suspected to cause neurodegenerative problems, are generated as environmental pollutants from which of the following? 1. Brakes of motor vehicles 2. Engines of motor veh...

Question 21 · Bio-resources & Applications

Which one of the following is used in preparing a natural mosquito repellent?