Ferns Edit. In most ferns, gametophyte is a photosynthetic free living organism called a prothallus. For example, in the leptosporangiate fern Dryopteris, the gametophyte is a free-living, autotrophic prothallus that produces gametes and maintains the sporophyte during its early multicellular development.
It is therefore an object of the present invention to provide a gyro stabilized center tracking vehicle, of reduced complexity in which the gyro Spin axis is maintained in its normal position by forces reacting against the earth, and in which these forces are minimized by torquing the gyro frame about its pivot axis.nother object of the invention is to provide a gyro stabilized center-tracking trail vehicle in which a gravity sensitive mass applies a torque to the gyro frame in a direction to erect the vehicle upon tilt from a vertical or plumb line attitude.
Bomb disposal is an all-encompassing term to describe the separate, but interrelated functions in the military fields of Explosive Ordnance Disposal (EOD) and Improvised Explosive Device Disposal (IEDD), and the public safety roles of Public Safety Bomb Disposal (PSBD) and the Bomb Squad.igstick is a British Army term for the waterjet disruptor commonly deployed on the Wheelbarrow remotely operated vehicle against IRA bombs in the 1970s. It fires an explosively-propelled jet of water to disrupt the circuitry of a bomb and thereby disable it with a low risk of detonation.