Biodiversity and species classification — UPSC Prelims PYQs
45 questions in this bank come from Biodiversity and species classification, spanning UPSC Prelims papers from 2011 to 2026. Every question here carries all four options, the correct answer and a full explanation.
It has appeared in 15 of the last 16 papers, most heavily in 2014 with 6 questions. That makes it one of the most dependable areas in the paper.
The themes examined most often within it are Threats and conservation of biodiversity (6), Classification of living organisms (4), Himalayan biodiversity and ecology (3), Pollinators and their ecological roles (3) and Endemism (2). Those counts are of questions in which the theme is examined, not merely mentioned.
Questions here are spread across Environment & Ecology (35), Science & Technology (5), General Studies (Uncategorized) (2) and Geography (2). Between them they draw on 66 distinct themes, so this is a broader area than a single revision note can cover. That is 3.1% of the 1433 questions in the bank — useful for deciding how much revision time it deserves.
Its weight has held steady, at roughly 3.2 questions a year across the last five papers.
It was not examined in 1 of those papers. Each question below links to its full explanation and to related questions on the same theme from other years, so a weak area can be worked through in one pass rather than hunted for paper by paper.
UPSC Prelims 20263 questions
- Environment & Ecology
With respect to the Western Hoolock Gibbons, which of the following statements is/are correct? 1. A Sanctuary in North-east India is home to this ape species listed as Endangered in the International Union for Conservation of Nature (IUCN) Red List. 2. They have specialized brachiation and can easily swing between trees. 3. They possess a strong and heavy build like gorillas, yet are remarkably agile tree climbers. Select the answer using the code given below:
- Environment & Ecology
Which of the following statements with regard to the arrival of Amur Falcons at Doyang Lake in Nagaland each year from Mongolia is/are correct? 1. It showcases how sustained local conservation efforts can contribute to the arrival and protection of international migratory birds. 2. It reflects the global success of advanced tracking technologies that guide migratory birds back to their stopover sites. 3. It confirms that Amur Falcons have adapted to permanent residency in India due to favourable habitat changes. Select the answer using the code given below:
- Environment & Ecology
Consider the following statements about Rhynchostylis retusa (Foxtail orchid): 1. It is an epiphytic orchid. 2. The species is endemic to North-east India. 3. It is the State flower of Arunachal Pradesh and Assam. Which of the statements given above is/are correct?
UPSC Prelims 20251 question
UPSC Prelims 20245 questions
- Environment & Ecology
Consider the following: 1. Butterflies 2. Fish 3. Frogs How many of the above have poisonous species among them?
- Environment & Ecology
Consider the following pairs: Country — Animal found in its natural habitat 1. Brazil — Indri 2. Indonesia — Elk 3. Madagascar — Bonobo How many of the pairs given above are correctly matched?
- Environment & Ecology
Consider the following: 1. Carabid beetles 2. Centipedes 3. Flies 4. Termites 5. Wasps Parasitoid species are found in how many of the above kind of organisms?
- General Studies (Uncategorized)
Consider the following: 1. Cashew 2. Papaya 3. Red sanders How many of the above trees are actually native to India?
- General Studies (Uncategorized)
The organisms "Cicada, Froghopper and Pond skater" are :
UPSC Prelims 20234 questions
- Science & Technology
Consider the following statements: 1. Some mushrooms have medicinal properties. 2. Some mushrooms have psychoactive properties 3. Some mushrooms have insecticidal properties. 4. Some mushrooms have bioluminescent properties. How many of the above statements are correct?
- Science & Technology
Which one of the following makes a tool with a stick to scrape insects from a hole in a tree or a log of wood?
- Environment & Ecology
Consider the following statements: 1. In India, the Biodiversity Management Committees are key to the realisation of the objectives of the Nagoya Protocol. 2. The Biodiversity Management Committees have important functions in determining access and benefit sharing, including the power to levy collection fees on the access of biological resources within its jurisdiction. Which of the statements given above is/are correct?
- Environment & Ecology
Consider the following statements: Statement-I: Marsupials are not naturally found in India. Statement-II: Marsupials can thrive only in montane grasslands with no predators. Which one of the following is correct in respect of the above statements?
UPSC Prelims 20223 questions
- Science & Technology
Consider the following statements: DNA Barcoding can be a tool to: 1. Assess the age of a plant or animal. 2. Distinguish among species that look alike. 3. Identify undesirable animal or plant materials in processed foods. Which of the above statements is/are correct?
- Environment & Ecology
With reference to “Gucchi” sometimes mentioned in the news, consider the following statements: 1. It is a fungus. 2. It grows in some Himalayan Forest areas. 3. It is commercially cultivated in the Himalayan foothills of north-eastern India. Which of the statements given above is/are correct?
- Environment & Ecology
Which of the following is not a bird?
UPSC Prelims 20201 question
UPSC Prelims 20193 questions
- History
Which one of the following groups of plants was domesticated in the ‘New World’ and introduced into the ‘Old World’?
- Environment & Ecology
Consider the following statements: 1. Some species of turtles are herbivores. 2. Some species of fish are herbivores. 3. Some species of marine mammals are herbivores. 4. Some species of snakes are viviparous. Which of the statements given above are correct?
- Environment & Ecology
Consider the following statements: 1. Asiatic lions are naturally found in India only. 2. Double-humped camels are naturally found in India only. 3. One-horned rhinoceros is naturally found in India only. Which of the statements given above is/are correct?
UPSC Prelims 20181 question
UPSC Prelims 20171 question
UPSC Prelims 20162 questions
- Environment & Ecology
What is/are unique about ‘Kharai camel’, a breed found in India? 1. It is capable of swimming up to three kilometres in seawater. 2. It survives by grazing on mangroves. 3. It lives in the wild and cannot be domesticated. Select the correct answer using the code given below.
- Environment & Ecology
With reference to ‘Red Sanders’, sometimes seen in the news, consider the following statements: 1. It is a tree species found in a part of South India. 2. It is one of the most important trees in the tropical rainforest areas of South India. Which of the statements given above is/are correct?
UPSC Prelims 20151 question
UPSC Prelims 20146 questions
- Geography
If you travel through the Himalayas, you are likely to see which of the following plants are naturally growing there? 1. Oak 2. Rhododendron 3. Sandalwood Select the correct answer using the code given below.
- Environment & Ecology
With reference to Bombay Natural History Society (BNHS), consider the following statements: 1. It is an autonomous organisation under the Ministry of Environment and Forests. 2. It strives to conserve nature through action-based research, education and public awareness. 3. It organises and conducts nature trails and camps for the general public. Which of the statements given above is/are correct?
- Environment & Ecology
The most important strategy for the conservation of biodiversity together with traditional human life is the establishment of:
- Environment & Ecology
Consider the following statements: 1. Animal Welfare Board of India was established under the Environment (Protection) Act, 1986. 2. The National Tiger Conservation Authority is a statutory body. 3. The National Ganga River Basin Authority is chaired by the Prime Minister. Which of the statements given above is/are correct?
- Geography
Which of the following phenomena might have influenced the evolution of organisms? 1. Continental drift 2. Glacial cycles Select the correct answer using the code given below.
- Science & Technology
Among the following organisms, which one does not belong to the class of the other three?
UPSC Prelims 20133 questions
- Environment & Ecology
In which of the following States is lion-tailed macaque found in its natural habitat? 1. Tamil Nadu 2. Kerala 3. Karnataka 4. Andhra Pradesh Select the correct answer using the codes given below:
- Environment & Ecology
Consider the following: 1. Star tortoise 2. Monitor lizard 3. Pygmy hog 4. Spider monkey Which of the above are naturally found in India?
- Environment & Ecology
Consider the following animals: 1. Sea cow 2. Sea horse 3. Sea lion Which of the above is/are mammal/mammals?
UPSC Prelims 20126 questions
- Environment & Ecology
Consider the following protected areas: 1. Bandipur 2. Bhitarkanika 3. Manas 4. Sunderbans Which of the above are declared Tiger Reserves?
- Environment & Ecology
Consider the following kinds of organisms 1. Bat 2. Bee 3. Bird Which of the above is/are pollinating agent/agents?
- Environment & Ecology
How does the National Biodiversity Authority (NBA) help in protecting Indian Agriculture? 1. NBA checks the biopiracy and protects the indigenous and traditional genetic resources. 2. NBA directly monitors and supervises the scientific research on genetic modification of crop plants. 3. Application for Intellectual Property Rights related to genetic/biological resources cannot be made without the approval of NBA. Which of the statements given above is/are correct?
- Environment & Ecology
What is the difference between the antelopes Oryx and Chiru?
- Environment & Ecology
Which of the following can be threats to the biodiversity of a geographical area? 1. Global warming 2. Fragmentation of habitat 3. Invasion of alien species 4. Promotion of vegetarianism Select the correct answer using the codes given below:
- Science & Technology
What are the reasons for the people’s resistance to the introduction of Bt brinjal in India? 1. Bt brinjal has been created by inserting a gene from a soil fungus into its genome. 2. The seeds of Bt brinjal are terminator seeds and therefore, the farmers have to buy the seeds before every season from the seed companies. 3. There is an apprehension that the consumption of Bt brinjal may have adverse impact on health. 4. There is some concern that the introduction of Bt brinjal may have adverse effects on biodiversity. Select the correct answer using the codes given below:
UPSC Prelims 20115 questions
- Environment & Ecology
Consider the following statements: 1. Biodiversity is normally greater in the lower latitudes as compared to the higher latitudes. 2. Along the mountain gradients, biodiversity is normally greater in the lower altitudes as compared to the higher altitudes. Which of the statements given above is/are correct?
- Environment & Ecology
The Himalayan Range is very rich in species diversity. Which one among the following is the most appropriate reason for this phenomenon?
- Environment & Ecology
Which one of the following is not a site for the in-situ method of conservation of flora?
- Environment & Ecology
The “Red Data Books” published by the International Union for Conservation of Nature and Natural Resource (IUCN) contain lists of 1. Endemic plant and animal species present in the biodiversity hotspots. 2. Threatened plant and animal species. 3. Protected sites for conservation of nature and natural resources in various countries. Select the correct answer using the codes given below:
- Environment & Ecology
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 richness 2. Vegetation density 3. Endemism 4. Ethno-botanical importance 5. Threat perception 6. Adaptation of flora and fauna to warm and humid conditions Which three of the above are correct criteria in this context?
