Rapid plant movement slower "growth-movements" of plants, called tropisms. Tropisms encompass movements that lead to physical, permanent alterations of the plant while rapid plant movements are usually reversible or occur at over a shorter span of time. A variety of mechanisms are utilized by plants in order to achieve these fast movements. Extremely fast movements such as the explosive spore dispersal techniques of "Sphagnum" mosses may involve increasing internal pressure via dehydration, causing a sudden propulsion of spores up or through the rapid opening of the "flower" opening triggered by insect pollination. Fast movement can also be expressed in predatory plants, where the
Audi Type P cc Audi Type Ps were produced. Audi themselves gives the precise number of Audi Type Ps as 327. The Audi Type P was not directly replaced: after 1932 Audi retreated from their brief excursion into compact cars, restricting themselves for the rest of the decade to large six-cylinder engined automobiles. Meanwhile the DKW F1 and its successors, introduced to fill unused capacity in what had been the Audi Zwickau plant, proved so popular that for the rest of the 1930s Audi's own cars had to be produced at Auto Union's nearby Horch plant. Audi Type P The Audi Type P