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MOVEMENT IN PLANTS

MOVEMENT IN PLANTS. MOVEMENT IN PLANT. Based on its stimulus, the movements in plant are grouped into three : 1. ENDOGENOUS MOVEMENT 2. EXOGENOUS MOVEMENT 3. HYGROSCOPIC MOVEMENT. ENDOGENOUS MOVEMENT (AUTOTOMIC). ENDOGENOUS MOVEMENT.

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MOVEMENT IN PLANTS

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  1. MOVEMENT IN PLANTS

  2. MOVEMENT IN PLANT • Based on its stimulus, the movements in plant are grouped into three : 1. ENDOGENOUS MOVEMENT 2. EXOGENOUS MOVEMENT 3. HYGROSCOPIC MOVEMENT

  3. ENDOGENOUS MOVEMENT(AUTOTOMIC)

  4. ENDOGENOUS MOVEMENT • Is movement that is not known yet its cause certainly but predicted this motion is caused by stimulus that comes from the body of plant itself. • Examples - the flowing movement of cytoplasm in cell - the bending movement of leaf bid because of difference of growth velocity

  5. EXOGENOUS MOVEMENT(ETIONOM/ESIONOM)

  6. EXOGENOUS MOVEMENT • Is plant movement that it is caused by external stimulus • External stimulus such as : Light, gravity, water, touch, and chemical substance

  7. The various kinds of exogenous movements in plants • Tropism movement • Nastic movement • Taxis movement

  8. TROPISM MOVEMENT • Is movement of part of plant to stimulus that is movement direction is determined by the stimulus • Kinds of tropism 1. phototropism 2. geotropism 3. chemotropism 4. thigmotropism 5. hydrotropism

  9. PHOTOTROPISM • Is tropism movement that caused by stimulus of light • Examples  the tip of plant that lies in room will bend to direction of incident light

  10. GEOTROPISM • Is tropism movement that follows earth gravitational force • positive geotropism is geotropism movement that its direction is downward • Negative geotropism is geotropism movement that its direction upward

  11. GEOTROPISM

  12. CHEMOTROPISM • Is tropism movement that is caused by chemical substances stimulus • Example :  the movement of root to food/fertilizer substance in soil

  13. THIGMOTROPISM • Is tropism movement that is caused by stimulus of touch to harder thing • Example  Tendril of plant movement

  14. HYDROTROPISM • Is the movement of plant root that is influenced by reservation of soil water.

  15. NASTIC MOVEMENT

  16. NASTIC MOVEMENT • Is plant movement to stimulus, that its direction is not determined by stimulus but by plant itself • Kind of nastic movement 1. photonasty 2. nictinasty 3. thigmonasty 4. thermonasty 5. complex nasty

  17. PHOTONASTIC • Is nasty movement that its caused by stimulus of light • example  the opening of Mirabilis jalapa flower at certain time

  18. NICTINASTY • Is nasty movement that its caused by dark condition (sleeping movement) • Examples  the closing of Butterfly flower ‘s leaves at night  the closing of compound leaves of Leucaena glauca at night

  19. THIGMONASTY • Is nasty movement that its caused by stumulus of touch • Example  the closing of leaves of Mimosa pudica when touched

  20. THERMONASTY • Is nasty movement that is caused by temperature stimulus • Example  Tulip flower will develop if suddently get temperature increasement

  21. COMPLEX NASTY • Is nasty movement that is caused by several factors altogether • Example  the opening and closing of stomata is influenced by light, chemical substance and water

  22. PICTURE THE OPENING AND CLOSING OF STOMATA

  23. TAXIS MOVEMENT

  24. TAXIS MOVEMENT • Is transfer movement of all part to stimulus that its direction is determined by the stimulus • Kinds of taxis movement 1. phototaxis 2. chemotaxis

  25. PHOTOTAXIS • Is taxis movement that is caused by stimulus of light • Example  the movement of chlorophyll to surface/nearer surface the leaves to get the light

  26. CHEMOTAXIS • Is the taxis movement that is caused by chemical substances stimulus. • Example  movement of spermatozoid of moss and fern to ovum that is found in archegonium attracted to the sugar or protein that is produced by archegonium

  27. HYGROSCOPIC MOVEMENT

  28. HYGROSCOPIC MOVEMENT • Is movement of part of plant that is caused by the influence of the change of water level from its cells so happens non-homogenous wrinkling • Example  the breaking of dried Calanchoe pinnata fruit (cocor bebek)

  29. ANULUS The opening of sporangium in fern as the cause of wrinkling annulus cells

  30. The opening of sphorangium of moss as the cause of the wrinkling peristome cells

  31. THE END

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