Identify the correct statements: a 1 only b 2 only c All are correct d None Q3. Please take advantage of our , , , , and for your preparation. To qualify as a biodiversity hotspot on Myers 2000 edition of the hotspot-map, a region must meet two strict criteria: 1. Azotobacter can be used with crops like wheat, maize, mustard, cotton, potato and other vegetable crops. The effect of the gaseous pollutants depend mainly on their: a Solubility in water b hydrophobic in nature c ability to settle down d longevity in air 8.
Physical and chemical components of an ecosystem constitute a Biotic structure b Abioltic structure c Both of these d None of these 18. In a food chain, humans are a Secondary consumers b Primary consumer c Producers d Primary and secondary consumers both 26. Energy flow in ecosystem is given by: a Haeckel b Odum c Tansely d Ramdeo Mishra 34. The atmosphere extends upto a height of about 10,000 km. In services output, India is: a 10 b 12 c 15 d 4 Answers: Multiple Choice Questions: 1. Produce 40 per cent of electricity from non-fossil fuel based energy resources by 2030. With reference to forest ecosystems, consider the following statements : 1.
Soap and detergents are the source of organic pollutants like: a glycerol b polyphosphates c sulphonated hydrocarbons d all of these 9. Biological nitrogen fixation is carried by cyanobacteria e. Which of the following is false about Ethanol: a Ethanol is a Biofuel, derived from biomass such as plants and animal materials and can be used as an alternative to fossil fuels. Identify the correct statements: a 1 only b 2 only c All are correct d None Q30. Identify the correct statements: a 1 only b 2 only c All are correct d None Q24. Which of the following explain thermal stratification? It was started in 1972 by the United Nations Assembly when the United Nations Conference on the Human Environment began.
Biosphere is a term used to represent the: a Entire atmosphere consisting of troposphere, stratosphere, mesosphere, and thermosphere b Entire hydrosphere-representing the entire collection of water over the Earth as well as inside the Earth c A small zone of Earth, where the lithosphere, hydrosphere, and atmosphere come in contact with one another d Entire lithosphere-representing the solid Earth and its interior 11. The organisms which feed on dead organisms and excreta of living organisms are known a Decomposers b Consumers c Producers d Carnivores 21. Carbon dioxide content in atmosphere is a 93% b 0. The largest reservoir of nitrogen an our planet is: a Ocean b Atmosphere c Biosphere d Fossil fuels 44. The range of normal human hearing is in the range of a 10 Hz to 80 Hz b 50 Hz to 80 Hz c 50Hz to 15000 Hz d 15000 Hz and above 7. Create an additional carbon sink of 2.
Due to the high density of water at 4 oC 3. A group of organism inhabiting a particular area d. This set of practice questions will help to build your confidence in Ecology to face the real examination. A food web consists of a Interlocking food chains b Producers, consumers and decomposers c A portion of a food chain d A set of similar consumers 28. Eutrophication is: a An improved water quality status of lakes b The result of accumulation of plant nutrients in water bodies c A process in the carbon cycle d A water purification technique 42. This in turn produces more organic matter.
The ability of a population of living species to increase under ideal environmental conditions is called: a. The Basel Convention is for the Control of Transboundary Movements of Hazardous Wastes and Their Disposal. She has penned books on gardening and agriculture for the common man in a bid to encourage farming and environmental awareness. A biofertilizer helps in increasing the supply of primary nutrients to plants. Which of the following statement is not correct? Non viability of seeds at higher temperature b. Identify the correct statements: a 1 only b 2 only c All are correct d None Q2.
These were the 12 initial compounds that were listed under the Stockholm convention. Pick out the odd one a. Total organic matter and total inorganic matter respectively in an ecosystem b. Spilled oil can harm the environment in several ways, including the physical damages that directly impact wildlife and their habitats such as coating birds or mammals with a layer of oil , and the toxicity of the oil itself, which can poison exposed organisms. The pollution which does not persistent harm to life supporting system is a Noise pollution b Radiation pollution c Organochlorine pollution d All of these 8. Consider the following statements : 1. Oil Spills make the water deficient in oxygen.
Stockholm convention : persistant organic pollutants 3. Algal bloom results in a Global warming b Salination c Eutrophication d Biomagnification 4. This causes problem for the marine animals. Biomass of dead matter and biomass of decomposers respectively in an ecosystem 8. They make the water deficient in oxygen. . Minamata convention : mercury 2.