Eye - Evolution. 1  Photoreception is phylogenetically very old, with various theories of phylogenesis. [26] 2  Eyes in various animals show adaptation to their requirements. 3  The very earliest eyes, called eyespots, were simple patches of photoreceptor protein in unicellular animals.
Synthetic fibers or fibres are the result of extensive research by scientists to improve on naturally occurring animal and plant fibers. In general, synthetic fibers are created by extruding fiber forming materials through spinnerets into air and water, forming a thread.Before synthetic fibers were developed, artificially manufactured fibers were made from polymers obtained from petro chemicals. These fibers are called synthetic or artificial fibers.oseph Swan invented the first synthetic fiber in the early 1880s. His fiber was drawn from a cellulose liquid, formed by chemically modifying the fiber contained in tree bark.
Noun. 1. plant fibre-fiber derived from plants. plant fiber. buntal-fine white Philippine fiber from stalks of unopened leaves of talipot palms; used in making hats. flax-fiber of the flax plant that is made into thread and woven into linen fabric.ute-a plant fiber used in making rope or sacks. kapok, silk cotton, vegetable silk-a plant fiber from the kapok tree; used for stuffing and insulation. red silk cotton-a plant fiber from the red silk-cotton tree of eastern India; inferior to kapok. natural fiber, natural fibre-fiber derived from plants or animals.