10 most difficult plants riddlesPlants quiz
Which species of cannabis contains the most THC?
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.
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.
Where is saffron crocus most abundant in the wild?
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.
Welwitschia is known as the plant with the longest living leaves. How many leaves does it produce in its centuries-spanning lifetime?
More than 100
More than 1000
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.
What kind of fruit is that?
Mamey sapote is a large and highly ornamental evergreen tree that can reach a height of 15 to 45 meters at maturity. In Florida, the fruit is harvested from May to July with some cultivars available all year. The fruit's texture is creamy and soft, the flavor is a mix of sweet potato, pumpkin, honey, prune, peach, apricot, cantaloupe, cherry, and almond. The fruit is eaten raw or made into milkshakes, smoothies, ice cream and fruit bars. It can be used to produce marmalade and jelly.
What tree is that?
Mediterranean dwarf palm
Cuban royal palm
giant windowpane palm
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.
Which plants are used to clean up soil and water contaminated with hazardous chemicals?
Sunflowers can be used to extract toxic ingredients from the 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.