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190 questions
With reference to the role of biofilters in Recirculating Aquaculture System, consider the following statements: 1. Biofilters provide waste treatment by removing uneaten fish feed. 2. Biofilters convert ammonia present in fish waste to nitrate. 3. Biofilters increase phosphorus as nutrient for fish in water. How many of the statements given above are correct?
Attempt & see explanationConsider the following statements: Once the Central Government notifies an area as a 'Community Reserve' 1. the Chief Wildlife Warden of the State becomes the governing authority of such forest 2. hunting is not allowed in such area 3. people of such area are allowed to collect non-timber forest produce 4. people of such area are allowed traditional agricultural practices How many of the above statements are correct?
Attempt & see explanationConsider the following statements: Statement-I: Carbon markets are likely to be one of the most widespread tools in the fight against climate change. Statement-II: Carbon markets transfer resources from the private sector to the State. Which one of the following is correct in respect of the above statements?
Attempt & see explanationConsider the following: 1. Aerosols 2. Foam agents 3. Fire retardants 4. Lubricants In the making of how many of the above are hydrofluorocarbons used?
Attempt & see explanationWhich one of the following makes a tool with a stick to scrape insects from a hole in a tree or a log of wood?
Attempt & see explanationConsider the following statements: 1. Some microorganisms can grow in environments with temperature above the boiling point of water. 2. Some microorganisms can grow in environments with temperature below the freezing point of water. 3. Some microorganisms can grow in highly acidic environment with a pH below 3. How many of the above statements are correct?
Attempt & see explanationConsider the following statements regarding the Indian squirrels: 1. They build nests by making burrows in the ground. 2. They store their food materials like nuts and seeds in the ground. 3. They are omnivorous. How many of the above statements are correct?
Attempt & see explanationConsider the following statements: 1. Some mushrooms have medicinal properties. 2. Some mushrooms have psycho-active properties. 3. Some mushrooms have insecticidal properties. 4. Some mushrooms have bioluminescent properties. How many of the above statements are correct?
Attempt & see explanationWhich 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 explanation