Ecology Questions-Science Olympiad Exam Questions With Verified Answers

Ecology Questions-Science Olympiad Exam Questions With Verified Answers What does P.O.P. stand for? - answerPersistent organic pollutants. What are P.O.P.'s? - answerToxic substances formed from organic compounds. Besides mercury, what other heavy metals cause toxic pollution? - answerLead, Cadmium, and Chronium What are the main sources of mercury pollution? - answerGold mining and use of substances derived from mercury in industry and agriculture. What environmental damage is caused by mercury pollution? - answerMercury contaminates living organisms and biomagnificates. Humans are affected by this when they eat contaminated organism. What is a biodigester? - answerA piece of equipment that produces carbon dioxide, hydrogen sulfide, and fuel gases. What are the main types of waste? - answerOrganic waste, recyclable waste, non-recyclable waste, toxic waste, nuclear toxic waste, and space waste. What are some agencies of pollution? - answerSewage, industrial waste, smoke, automobile exhaust, herbicides, insecticides, noise, radioactive substances. What are the sequential stages of a xerosere on a rock? - answer1. Crutose lichen stage 2. Foliose lichen stage 3. Moss stage 4. Herb stage 5. Shrub stage 6. Forest stage/climax. What are the sequential stages of a hydrosere on a hydrarch? - answer1. Phytoplankton stage 2. Rooted-submerged stage 3. Rooted-floating stage 4. Reed-swamp stage 5. Sedge-meadow stage 6. Woodland stage 7. Forest stage/climax. Name three ephemeral annual xerophytes. - answerArgemone mexicana, solanum xanthocarpum, and cassia tora. Name three succulent xerophytes. - answerOptunia, aloe, agave, euphorbia splendens, cereus, and mammillaria Name three root-submerged hydrophytes. - answerHydrilla, isoetes, potamogeton, and vallisnerica. Name three free-floating hydrophytes. - answerAzolla, eichhornia, lemna, pistia, salvinia, spirodelia, and wolfia. What are the types of soil erosion? - answerWater erosion, wind erosion, slip erosion, and over felling/overgrazing. What is a soil profile? - answerAn imaginary longitudinal section of the soil, showing it's different regions. What are edaphic factors? - answerAn ecological factor in which we study the structure and composition of soil, as well as it's chemical and physical properties. What is genecology? - answerThe study of ecology which deals with the variations of species based on their genetic potentialities. What are the types of ecological factors? - answerClimatic factors, topographic factors, edaphic factors, and biotic factors. What is phytogeography - answerThe science that deals with the geographic distribution of plants. Does acid rain contain sulphuric acid, nitric acid, both, or neither? - answerBoth. Where and when was the Earth Summit held? - answerRio de Janeiro in 1992. What radioactive material is largely associated with bone cancer? - answerStrontium-90. What are pollutants introduced into the environment by human activity called? - answerQualitative pollutants. Why is carbon monoxide considered a pollutant? - answerBecause it reacts with haemoglobin. How much of air pollution does mobile combustion account for? - answer50-60% What are secondary pollutants? - answerA pollutant formed in the atmosphere when primary pollutants are released. What are aerosols? - answerMinute particles suspended in the atmosphere. What are particulate pollutants? - answerA complex mixture of extremely small particles and liquid droplets that get into the air. What does lead poisoning do? - answerReduces O2 carrying capacity of haemoglobin in the blood.