UPSC Prelims 2021

Q30. Which of the following have species that can establish a symbiotic relationship with other organisms ? 1. Cnidarians 2. Fungi 3. Protozoa Select the…

Q29. The ‘Common Carbon Metric’ supported by UNEP, has been developed for A. Assessing the carbon footprint of building operations around the world B. Enabling…

Q28. Which of the following are detritivores?     1. Earthworms 2. Jellyfish 3. Millipedes 4. Seahorse 5. Woodlice    Select the correct answer using the code…

Q27. In case of which one of the following biogeochemical cycles,the weathering of rocks is the main source of release of nutrient to entire the…

Q26. Which one of the following is a filter feeder? A. Catfish B. Octopus C. Oyster D. pelican Answer: CExplanation: · Filter Feeder is an…

Q25. Magnetite particles, suspected to cause neurodegenerative problems , are generated as environmental pollutants from which of the following? 1. Brakes of motor vehicles 2.…

Q24. With reference to the ‘New York Declaration on Forests’,which of the following statements are correct? 1. It was first endorsed at the United Nation…

Q23 Consider the following animals: 1. Hedgehog 2. Marmot 3. pangolin To reduce the chance of being captured by predators , which of the above…

Q22. Consider the following kinds of organisms : 1. Copepods 2. Cyanobacteria 3. Diatoms 4. Foraminifera Which of the above are primary producers in the…

Q21. Which one of the following is used in preparing a natural mosquito repellent? A. Congress grass B. Elephant grass C. Lemongrass D. Foraminifera Answer:…