Attempt real previous-year and practice questions, subject by subject. Every question comes with the correct answer and a detailed explanation — free, no sign-up needed.
202 questions
Which of the following organisms perform waggle dance for others of their kin to indicate the direction and the distance to a source of their food?
Attempt & see explanationConsider the following fauna: 1. Lion-tailed Macaque 2. Malabar Civet 3. Sambar Deer How many of the above are generally nocturnal or most active after sunset?
Attempt & see explanation'Invasive Species Specialist Group' (that develops Global Invasive Species Database) belongs to which one of the following organizations?
Attempt & see explanationConsider 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?
Attempt & see explanationConsider the following trees: 1. Jackfruit (Artocarpus heterophyllus) 2. Mahua (Madhuca indica) 3. Teak (Tectona grandis) How many of the above are deciduous trees?
Attempt & see explanation"System of Rice Intensification" of cultivation, in which alternate wetting and drying of rice fields is practised, results in: 1. Reduced seed requirement 2. Reduced methane production 3. Reduced electricity consumption Select the correct answer using the code given below:
Attempt & see explanationAmong the following crops, which one is the most important anthropogenic source of both methane and nitrous oxide?
Attempt & see explanationConsider the following statements: Statement 1: The United Nations Capital Development Fund (UNCDF) and the Arbor Day Foundation have recently recognized Hyderabad as 2020 Tree City of the World. Statement 2: Hyderabad was selected for the recognition for a year following its commitment to grow and maintain the urban forests. Which one of the following is correct in respect of the above statements?
Attempt & see explanation'Triclosan', considered harmful when exposed to high levels for a long time, is most likely present in which of the following?
Attempt & see explanationConsider 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 minor forest produce. 4. India exports tamarind and seeds of moringa. 5. Seeds of moringa and tamarind can be used in the production of biofuels. Which of the statements given above are correct?
Attempt & see explanationThe 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 or a combination of some conditions. Which of the following are such conditions? 1. Burrowing animals and termites 2. Fire 3. Grazing herbivores 4. Seasonal rainfall 5. Soil properties Select the correct answer using the code given below.
Attempt & see explanation"Leaf litter decomposes faster than in any other biome and as a result the soil surface is often almost bare. Apart from trees, the vegetation is largely composed of plant forms that reach up into the canopy vicariously, by climbing the trees or growing as epiphytes, rooted on the upper branches of trees." This is the most likely description of
Attempt & see explanationIn the context of India's preparation for Climate-Smart Agriculture, consider the following statements: 1. The 'Climate-Smart Village' approach in India is a part of a project led by the Climate Change, Agriculture and Food Security (CCAFS), an international research programme. 2. The project of CCAFS is carried out under Consultative Group on International Agricultural Research (CGIAR) headquartered in France. 3. The International Crops Research Institute for the Semi-Arid Tropics (ICRISAT) in India is one of the CGIAR's research centres. Which of the statements given above are correct?
Attempt & see explanationAmong the following, which one is the least water-efficient crop?
Attempt & see explanationWith reference to 'palm oil', consider the following statements: 1. The palm oil tree is native to Southeast Asia. 2. The palm oil is a raw material for some industries producing lipstick and perfumes. 3. The palm oil can be used to produce biodiesel. Which of the statements given above are correct?
Attempt & see explanationHow is permaculture farming different from conventional chemical farming? 1. Permaculture farming discourages monocultural practices but in conventional chemical farming, monoculture practices are predominant. 2. Conventional chemical farming can cause increase in soil salinity but the occurrence of such phenomenon is not observed in permaculture farming. 3. Conventional chemical farming is easily possible in semi-arid regions but permaculture farming is not so easily possible in such regions. 4. Practice of mulching is very important in permaculture farming but not necessarily so in conventional chemical farming. Select the correct answer using the code given below.
Attempt & see explanationWhich 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.
Attempt & see explanationThe 'Common Carbon Metric', supported by UNEP, has been developed for
Attempt & see explanationWhich of the following are detritivores? 1. Earthworms 2. Jellyfish 3. Millipedes 4. Seahorses 5. Woodlice Select the correct answer using the code given below.
Attempt & see explanationIn 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?
Attempt & see explanation