Gymnosperm Gymnosperm The gymnosperms , also known as Acrogymnospermae, are a group of seed-producing plants that includes conifers, cycads, "Ginkgo", and gnetophytes. The term "gymnosperm" comes from the Greek composite word "γυμνόσπερμος" (γυμνός gymnos, "naked" and σπέρμα sperma, "seed"), meaning "naked seeds". The name is based on the unenclosed condition of their seeds (called ovules in their unfertilized state). The non-encased condition of their seeds stands in contrast to the seeds and ovules of flowering plants (angiosperms), which are enclosed within an ovary. Gymnosperm seeds develop either on the surface of scales or leaves, which are often modified to form cones,
The Seeds of Doom The Seeds of Doom The Seeds of Doom is the sixth and final serial of the 13th season of the British science fiction television series "Doctor Who", which was first broadcast in six weekly parts on BBC1 from 31 January to 6 March 1976. The serial is set in Antarctica and England. In the serial, the plant collector Harrison Chase (Tony Beckley) seeks to retrieve a malignant alien plant called a Krynoid for himself. In Antarctica, British scientists Charles Winlett and Derek Moberley discover a pod buried in the permafrost and take it back to their camp. John Stevenson, the