Which is the plant, a member of the Amaranth family, native to the Andes in South America, the seeds of which are a staple food crop in parts of South America and are now grown around the world?
Which plant genus, with species ranging from low deciduous shrubs to evergreen trees up to 18 m (59 ft) tall and native to areas of Eurasia and Africa, flowers prolifically with dense pink spikes?
The fruit of which plant, endemic to the island of Socotra, or Soqotra, between the Guardafui Channel and the Arabian Sea, is known to be used as a treatment for sores and wounds?
The dried and grated root of which plant is baked to make cassava bread, and is used to make a beverage called piwarry from its fermented juices?