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
My Boyfriend Is Type B male, which supposedly makes him arrogant, hardheaded, and generally a jerk, whereas Ha-mi is a type-A female, one who supposedly can't help being timid and obedient. But while Chae-young predicts impending doom, the happy couple try to give love a shot, ignoring their supposed blood type incompatibility. My Boyfriend Is Type B My Boyfriend is Type B () is a 2005 South Korean romantic comedy film. The basic premise of the film comes from the blood type personality theory, which claims that a person's blood type can determine their personality traits. The heroine is type A (conservative and introverted) while