Plants questions This is a list of recently added questions about plants. Play plants quiz and see all the questions. How is the soilless cultivation of plants called?Hydroponics is a subset of hydroculture and is a method of growing plants using mineral nutrient solutions, in water, without soil. Terrestrial plants may be grown with their roots in the mineral nutrient solution only or in an inert medium, such as perlite or gravel.Created by: Paweł Kołodziejczykhard 50% hydrologyhydrology915hydroculturehydroculture1986hydroponicshydroponics4940hydrofarminghydrofarming1925crops riddles » Where do coast redwoods grow?In the west of the United States. Common names of sequoia sempervirens include coast redwood, coastal redwood and California redwood. It is an evergreen, long-lived, monoecious tree living 1,200–1,800 years or more. This species includes the tallest living trees on Earth. It comes from coastal mountains of Oregon and California. (the west of the USA).Created by: Paweł Kołodziejczykhard 46% In Central America onlyIn Central America only841In the west of the United StatesIn the west of the United States2460in the eastern Brazilin the eastern Brazil838in the entire North and Central Americain the entire North and Central America1171trees riddles » What is the natural role of nicotine in tobacco plant?It is poisonous to insects. Nicotine is a powerfoul neurotoxin to insects. Many plants other than tobacco contain it, however the concentration of nicotine in tobacco is exceptionally high. Even though some species have evolved the ability to feed on tobacco, it remains relatively easy to grow, being unpalatable to most species. In some places, tobacco became an invasive weed.Created by: globalquiz.orgeasy 70% it is poisonous to insectsit is poisonous to insects6911it attracts beesit attracts bees623it is an useless by-productit is an useless by-product997it moisturizes leavesit moisturizes leaves1243nicotine riddles » Which plant is hazardous to harvest when it is wet?Tobacco. Green Tobacco Sickness is a type of nicotine poisoning caused by the dermal absorption of nicotine from the surface of wet tobacco plants. The symptoms inclue vomiting, headache and fluctuations in blood pressure and heart rate. These may be so severe as to require emergency medical treatment.Created by: brainyaverage 64% cottoncotton3209grapesgrapes279tobaccotobacco6867sunflowersunflower341tobacco riddles » What kind of plantation is that?Tobacco is easy to be recognized because of its large leaves. Production of tobacco hit its top in 1992, during which 7.5 million tons of leaf were produced. Later, it dropped to 5.7 million tons in 1997. Today however, the production is growing due to increased productivity by developing nations. It was 7.1 million tons in 2010.Created by: globalquiz.orgeasy 78% tobaccotobacco4647teatea718cottoncotton502grapesgrapes58agriculture riddles » What kind of plantation is that?Asparagus. Hilling, earthing up or ridging is the technique of piling soil up around the base of a plant, which buries the normally above-ground part of the plant. Hilling promotes the desired growth of asparagus, it also prevents the production of chlorophyl, which keeps asparagus pale and delicate.Created by: globalquiz.orghard 52% potatopotato1074gingerginger1273asparagusasparagus2918sugar beetsugar beet302farming riddles » What kind of plantation is that?Asparagus. Young shoots of asparagus are covered to exclude light to prevent photosynthesis and the production of chlorophyll, and thus remain pale in color and delicate in flavor and texture. This technique is called blanching.Created by: globalquiz.orgeasy 78% sugar beetsugar beet739asparagusasparagus4800horse radishhorse radish424carrotscarrots152botany riddles » Which plant was used to fashion wreaths awarded to victors in Ancient Greece? Laurel. Laurus nobilis is an evergreen tree or large shrub native to the Mediterranean region. Its aromatic leaves are added whole to Italian pasta sauces. The word "Laureate" in 'poet laureate' refers to being signified by the laurel wreath.Created by: globalquiz.orgaverage 60% OliveOlive3361LaurelLaurel6275MyrtleMyrtle509AcanthusAcanthus285ancient Greece riddles » Which non-coniferous trees are the tallest in the world?Eucalypts. Eucalyptus regnans, the Australian mountain ash, is the tallest of all flowering plants. Today, the tallest measured specimen named Centurion is 99.6 m (327 ft) tall (taller than the highest giant sequoia). Six other eucalypt species exceed 80 metres in height.Created by: globalquiz.orghard 46% oaksoaks396populuspopulus1221baobabsbaobabs2753eucalyptseucalypts3833nature riddles » Where is saffron crocus most abundant in the wild?Nowhere. The saffron crocus is a triploid that is incapable of independent sexual reproduction — all propagation is via manual "divide-and-set" of a starter clone. It may have emerged via plant breeding in late Bronze-Age Crete.Created by: Kasiavery hard 31% Northern EuropeNorthern Europe986Middle EastMiddle East1357AfricaAfrica276nowherenowhere1230flowers riddles » Play botany quiz and see all the questions.