10 most difficult trees riddles A list of ten (out of 31) trees related questions that are the most often answered incorrectly Trees quiz Which of these countries has the highest level of afforestation?Japanese inu. Among developed countries, Japan has one of the highest levels of afforestation, over 68% of the area - beign surpassed only by Sweden and Finland.very hard 22% RussiaRussia45%NorwayNorway14%BrazilBrazil17%Japanese inuJapanese inu22%Created by: Tschuka. Statistics based on 456 answers in 2 languages »Japan riddles » What tree is considered to be the most dangerous in the world?Manchineel. The manchineel tree is native to tropical southern North America and northern South America. All parts of the tree contain strong toxins and even the merest contact with human skin causes a breakout of blisters, and blindness can occur if it touches a person's eyes. In some parts of its range, many trees carry a warning sign, while others are marked with a red "X" on the trunk to indicate danger.very hard 24% oleanderoleander14%manchineelmanchineel24%ricinusricinus26%dieffenbachiadieffenbachia34%Created by: Ninjai. Statistics based on 114 answers in 3 languages »nature riddles » Where was the most isolated tree on Earth located?In Niger. The Ténéré Tree was a solitary acacia, the only one for over 400 km, located in northeast Niger. It was a landmark on caravan routes through the Sahara Desert, so well known that it and the Lost Tree to the north are the only trees to be shown on a map at a scale of 1:4,000,000. It was knocked down in 1973 by a drunk truck driver.very hard 28% in Ethiopiain Ethiopia20%in Libyain Libya28%in Tunisiain Tunisia21%in Nigerin Niger28%Created by: Ninjai. Statistics based on 69 answers in 3 languages »deserts riddles » How deep is the root system of a giant sequoia?4 meters (13 feet). The sequoias root system is wide spreading, but shallow. There is no taproot. A mature sequoia's roots can occupy over 1 acre of earth and contain over 90,000 cubic feet of soil. very hard 31% 4 meters (13 feet)4 meters (13 feet)31%20 meters (60 feet)20 meters (60 feet)16%40 meters (130 feet)40 meters (130 feet)26%80 meters (260 feet)80 meters (260 feet)26%Created by: globalquiz.org. Statistics based on 9809 answers in 5 languages »biology riddles » What is the name of the holy Mayan tree?Ceiba. The tree plays an important part in the mythologies of pre-Columbian Mesoamerican cultures. The Ceiba, or ya’axché, symbolised to the Maya civilization an axis mundi which connects the planes of the Underworld (Xibalba) and the sky with that of the terrestrial realm. This concept of a central world tree is often depicted as a Ceiba trunk. very hard 31% PlatoniaPlatonia15%CeibaCeiba31%AraucariaAraucaria33%JacarandaJacaranda19%Created by: Tschuka. Statistics based on 83 answers in 3 languages »religions riddles » How many types of fruit can that tree produce?40. The Tree of 40 Fruit is one of a series of fruit trees created by the New York-based artist Sam Van Aken using the technique of grafting. Each tree produces forty types of stone fruit ripening sequentially from July to October in the United States.very hard 32% 4415%141425%242425%404032%Created by: Ninjai. Statistics based on 224 answers in 3 languages »nature riddles » Which of the following nettle species is dangerous to humans?Tree nettle. The tree nettle, or ongaonga in Māori, is endemic to New Zealand. The toxin present in its spines is tryfydin, which causes powerful stimulation of the parasympathetic nerve system. Multiple stingings can have a very painful reaction causing a rash and itching, and in high concentrations loss of motor movement, paralysis, drop in blood pressure, blurred vision and confusion. There has been one recorded human death from contact.very hard 33% fen nettlefen nettle18%bull nettlebull nettle19%scrub nettlescrub nettle28%tree nettletree nettle33%Created by: Ninjai. Statistics based on 66 answers in 3 languages »New Zealand riddles » What nut is that?Cashew. The cashew nut, often simply called a cashew, is eaten on its own, used in recipes, or processed into cashew cheese or cashew butter. The shell of the cashew seed yields derivatives that can be used in many applications including lubricants, waterproofing, paints, and arms production, starting in World War II.very hard 33% pecanpecan27%macadamiamacadamia33%cashewcashew33%pistachiopistachio5%Created by: Ninjai. Statistics based on 18 answers in 3 languages »botany riddles » What tree species has the widest trunk girth in the world? Montezuma cypress. The Tree of Tule is one of a number of old Montezuma cypress trees that grow in Santa Maria del Tule, Mexico. It is one of the oldest and largest in the world and has the widest girth. It has a height of forty meters, a volume of between 700 and 800m3, an estimated weight of 630 tons and a circumference of about forty meters.The trunk is so wide that thirty people with arms extended joining hands are needed to encircle it.very hard 35% EucalyptusEucalyptus5% Montezuma cypress Montezuma cypress35%Mammoth giantMammoth giant22%BaobabBaobab36%Created by: Tschuka. Statistics based on 495 answers in 2 languages »Mexico riddles » What tree is that?Traveller's tree. Ravenala, commonly known as traveller's tree is a palm resembling tree native to Madagascar. At the top of the tree are banana-like leaves, with pale midribs that give a fanlike appearance. It is named so because the water it accumulates in its leaf bases can be used in emergencies for drinking. However, the water inside the plant is murky, black and smelly and should not be consumed without purification. very hard 35% traveller's treetraveller's tree35%Mediterranean dwarf palmMediterranean dwarf palm32%Cuban royal palmCuban royal palm18%giant windowpane palmgiant windowpane palm13%Created by: Ninjai. Statistics based on 127 answers in 3 languages »plants riddles » Play trees quiz and see all the questions.