According to the information provided, plants exhibit two types of movement: tropisms and nastic movements. Tropisms involve directional growth or movement in response to external stimuli, such as light or gravity, where the plant moves towards or away from the stimulus. Nastic movements, on the other hand, are non-directional and reversible responses to stimuli, independent of the stimulus direction. These movements include actions like folding or opening of plant parts. Together, tropisms and nastic movements contribute to plant adaptation and survival by allowing plants to respond to changing environmental conditions.