8-8. Movement in Plant

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Chapter 8 Semester 2 Grade 8

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MOVEMENT IN PLANT:

MOVEMENT IN PLANT

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

HYGROSCOPIC MOVEMENT:

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 ( pacar air)  t he opening of sporangium in fern as the cause of wrinkling annulus cells

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ANULUS

The opening of sporangium of moss as the cause of the wrinkling peristome cells:

The opening of sporangium of moss as the cause of the wrinkling peristome cells

ENDOGENOUS MOVEMENT (autonomic):

ENDOGENOUS MOVEMENT (autonomic) 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

EXOGENOUS MOVEMENT (etionom/esionom):

EXOGENOUS MOVEMENT ( etionom / esionom ) Is plant movement that it is caused by external stimulus External stimulus such as : Light, gravity, water, touch, and chemical substance

The various kinds of exogenous movements in plants:

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

TROPISM MOVEMENT:

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

PHOTOTROPISM:

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

GEOTROPISM:

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

GEOTROPISM:

GEOTROPISM

CHEMOTROPISM:

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

THIGMOTROPISM :

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

HYDROTROPISM:

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

NASTIC MOVEMENT:

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

PHOTONASTIC:

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

NICTINASTY:

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

THIGMONASTY/seismonasty:

THIGMONASTY/ seismonasty Is nasty movement that it ’ s caused by st i mulus of touch Example  the closing of leaves of Mimosa pudica when touched

THERMONASTY:

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

COMPLEX NASTY:

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

Picture The Opening And Closing Of Stomata:

Picture The Opening And Closing Of Stomata

TAXIS MOVEMENT:

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

PHOTOTAXIS:

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

CHEMOTAXIS:

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

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THE END

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Do The Exercise Chapter 8 Page 199 – 200 Multiple Choices and Essay Just The Answers Do on your notebook

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Created by Alfie_MSK, A Biology teacher of GIS JH You can also download this slide on http://www.slideshare.net/alfikesturi Or on http://www.authorstream.com/kesturi