10 most difficult plants riddles A list of ten (out of 29) plants related questions that are the most often answered incorrectly Plants quiz Which species of cannabis contains the most THC?Cannabis Sativa. Some studies indicate that, on average, Cannabis sativa has higher levels of CBD compared to THC than C. indica. The effects of sativa are well known for its cerebral high, while indica is well known for its sedative effects which some prefer for night time use. Both types are used as medical cannabis.very hard 20% Cannabis Indica Cannabis Indica 53%Cannabis SativaCannabis Sativa20%Cannabis RuderalisCannabis Ruderalis10%Cannabis KushCannabis Kush15%Created by: Tschuka. Statistics based on 1886 answers in 3 languages »drugs riddles » Which plant belongs to the cabbage family?Rapeseed (Brassica napus) in the case of one particular group of cultivars, canola), is a bright-yellow flowering member of the family Brassicaceae (mustard or cabbage family), cultivated mainly for its oil-rich seed. It is the third-largest source of vegetable oil in the world. very hard 25% lettucelettuce46%RapeseedRapeseed25%spinachspinach18%sorrelsorrel10%Created by: Tschuka. Statistics based on 2815 answers in 2 languages »agriculture riddles » Welwitschia is known as the plant with the longest living leaves. How many leaves does it produce in its centuries-spanning lifetime?Two. Welwitschia is endemic to the Namib desert. The age of individual plants is difficult to assess, but many plants may be over 1000 (or even 2000) years old. Because Welwitschia only produces a single pair of foliage leaves, the plant was thought by some to be neotenic, consisting essentially of a "giant seedling." However, research showed that its anatomy is not consistent with the giant seedling idea. Instead, the plant is more accurately thought of as achieving its unusual morphology as a result of having "lost its head" (apical meristem) at an early stage.very hard 27% OneOne12%TwoTwo27%More than 100More than 10035%More than 1000More than 100023%Created by: Katarzyna Dąbrowska. Statistics based on 1643 answers in 3 languages »deserts riddles » Where did the "Primitivo" grape variety originate?From Croatia. Primitivo, zinfandel, tribidrag, crljenak kaštelanski, kratošija - red grape variety, originating in Croatiavery hard 27% from Croatiafrom Croatia27%from Italyfrom Italy43%from Maltafrom Malta15%from Georgiafrom Georgia14%Created by: Tschuka. Statistics based on 1558 answers in 2 languages »wine riddles » Which of the plants does not belong to the Asteraceae family?Nasturtium comes from the nasturtium family. The others are asteraceae whose family has about 23.6 thousand species of plants.very hard 29% sunflowersunflower12%camomilecamomile10%lettucelettuce47%nasturtiumnasturtium29%Created by: Tschuka. Statistics based on 1708 answers in 2 languages »flowers 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.very hard 32% Northern EuropeNorthern Europe25%Middle EastMiddle East34%AfricaAfrica7%nowherenowhere32%Created by: Kasia. Statistics based on 5868 answers in 2 languages »spices riddles » Which plants are used to clean up soil and water contaminated with hazardous chemicals?Sunflowers can be used to extract toxic ingredients from soil, such as lead, arsenic and uranium. They are also used to neutralize radionuclides and other toxic ingredients and harmful bacteria from water. They were used to remove radioactive isotopes after the Chernobyl disaster and the Fukushima Daiichi nuclear disaster.very hard 34% sunflowerssunflowers34%rosesroses4%violasviolas24%rapeseedsrapeseeds36%Created by: Ninjai. Statistics based on 2055 answers in 3 languages »curiosities riddles » Where do the succulent plants called living stones occur?In Africa. Lithops are native to southern Africa, mainly Namibia and South Africa. They avoid being eaten by blending in with surrounding rocks and are often known as pebble plants or living stones. The first scientific description of a Lithops was made by William John Burchell in 1811, who accidentally found a specimen when picking up from the ground a "curiously shaped pebble".very hard 35% in Asiain Asia11%in North Americain North America15%in Africain Africa35%in Australiain Australia37%Created by: Ninjai. Statistics based on 185 answers in 2 languages »botany riddles » Where do the wild cocoa forests grow?Nowhere. Currently, cocoa trees are not found in the wild.very hard 36% In northern MexicoIn northern Mexico10%In Côte d'IvoireIn Côte d'Ivoire13%In eastern BrazilIn eastern Brazil38%NowhereNowhere36%Created by: Tschuka. Statistics based on 1792 answers in 2 languages »chocolate riddles » What carnivorous plant is that? Venus flytrap. The Venus flytrap is endemic to North and South Carolina, U.S. It catches its prey with a trapping structure formed by the terminal portion of each of the plant's leaves, which is triggered by tiny hairs on their inner surfaces. When an insect or spider crawling along the leaves contacts a hair, the trap prepares to close, snapping shut only if another contact occurs within approximately twenty seconds of the first strike.very hard 39% common bladderwortcommon bladderwort0%Attenborough's pitcher plantAttenborough's pitcher plant6%Alice sundewAlice sundew53%Venus flytrapVenus flytrap39%Created by: Ninjai. Statistics based on 111 answers in 3 languages »botany riddles » Play plants quiz and see all the questions.