Seed are sometimes sold commercially while still enclosed within the hard wall of the fruit, which must be split open to reach the seed. Different groups of plants have other modifications, the so-called stone fruits (such as the peach) have a hardened fruit layer (the endocarp) fused to and surrounding the actual seed. Nuts are the one-seeded, hard-shelled fruit of some plants with an indehiscent seed, such as an acorn or hazelnut. Seeds are produced in several related groups of plants, and their manner of production distinguishes the angiosperms ("enclosed seeds") from the gymnosperms ("naked seeds"). Angiosperm seeds are produced in
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