"I just love scanning for lifeforms. Lifeforms... you tiny little lifeforms... you precious little lifeforms... where are you?"
"Our mission as Starfleet officers is to seek out new lifeforms so we can learn about one another."
– Miles O'Brien, 2369 ("Captive Pursuit")

DNA, the biological foundation for many lifeforms

A lifeform, or organism, is a discrete entity generally considered to be "alive". The study of lifeforms is known as biology, and, when dealing with alien lifeforms, could be further sub-categorized into xenobiology and xenology.

Traits that could indicate whether something was a lifeform included the capacity to respond to the environment, respirate, reproduce, grow and develop, move, secrete, and excrete. Regardless, these criteria were not universally applicable, as organic, inorganic, artificial, and non-corporeal entities have all been considered lifeforms. (TNG: "Datalore"; TNG: "Home Soil"; TNG: "Elementary, Dear Data"; TNG: "The Measure Of A Man")

Most space-faring civilizations built devices to remotely detect and locate known lifeforms. Starship sensors and tricorders were the primary instruments used, as they could identify or localize blood type, heart rate or metabolic setup. Typically, only organic lifeforms were detected. (TNG: "Home Soil")

There are incredible similarities between the lifeforms on different worlds in the Star Trek universe. A probable explanation for this may be the existence of the ancient humanoids DNA during evolution.

Types of lifeforms Edit

Starfleet lifeform classification Edit

The class-5 type lifeform may refer to humanoids.

See also Edit

External link Edit