Biology 2601A/B Lecture Notes - Lecture 19: Turgor Pressure, Meristem, Pulvinus
18 Dec 2015
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Document Summary
Growth movments; irreversible once a certain length and direction. Turgor movements; reversible based on turgor, changes in pressure potential and water potential can have cells that swell or flake , short time scale and reversible movement. Tropism (directed movement) gravitrophism, based on gravity, review. Climbing vines; passion flower vine can"t grow on it"s own without support whipping motion around and around is an example of this type of movement. Permanent growth once it wraps around and finds it support. Directed by changes in growth overtime and the idea that parts of the plant grow a little bit faster than adjacent parts when we do that we shift the entire direction of the plant. Really just an example of where you"ve got differential growth in the. Shift in region of most active cell division. Partly driven by allocation of hormones (e. g. auxin) helps promote.
