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Plant hormones:
... • Developing seeds produce gibberellins Æ stimulate their growth • Seedless grapes are smaller than seeded ones. • Farmers spray them with gibberellins to get normal large grapes. ...
... • Developing seeds produce gibberellins Æ stimulate their growth • Seedless grapes are smaller than seeded ones. • Farmers spray them with gibberellins to get normal large grapes. ...
Phytohormones - Napa Valley College
... sources to targets 2. Amplify the signal produced by the phytohormone Hormone, from the Greek word horman, meaning "to s:mulate”. Hormones control • Growth • Development • Movement. ...
... sources to targets 2. Amplify the signal produced by the phytohormone Hormone, from the Greek word horman, meaning "to s:mulate”. Hormones control • Growth • Development • Movement. ...
PLANT TROPISMS WHAT ARE TROPISMS? Plants can respond to
... against the action of gravity. Auxins concentrate on the lower part, causing the plant shoot to grow ...
... against the action of gravity. Auxins concentrate on the lower part, causing the plant shoot to grow ...
Plant Growth
... the plant - so that entire plant bends or curves toward the light This growth pattern is caused by the hormone auxin - auxin migrates to the shaded part of the plant and stimulates increased cell growth and elongation on the shaded part of the plant ...
... the plant - so that entire plant bends or curves toward the light This growth pattern is caused by the hormone auxin - auxin migrates to the shaded part of the plant and stimulates increased cell growth and elongation on the shaded part of the plant ...
Ch35
... base of stem cells. It is hypothesized that these are the efflux carriers. An overview of auxin action. It is produce in the apical meristem of shoots, in young leaves and in seeds. It is transported downward in parenchyma cells. It causes cell elongation, promotes xylem and phloem differentiation, ...
... base of stem cells. It is hypothesized that these are the efflux carriers. An overview of auxin action. It is produce in the apical meristem of shoots, in young leaves and in seeds. It is transported downward in parenchyma cells. It causes cell elongation, promotes xylem and phloem differentiation, ...
Plant Growth Regulators Plant Growth Regulators
... prevent fruit drop promote flowering and fruiting control weeds ...
... prevent fruit drop promote flowering and fruiting control weeds ...
Warm-Up
... Conclusion: Tip of coleoptile senses light some signal was sent from tip to elongating region of coleoptile ...
... Conclusion: Tip of coleoptile senses light some signal was sent from tip to elongating region of coleoptile ...
Plant Hormones and Plant Reproduction
... hormones, auxin influences plant responses to light (phototropism) and gravity (geotropism) Auxin is also active in leaves, fruits and germinating seeds. ...
... hormones, auxin influences plant responses to light (phototropism) and gravity (geotropism) Auxin is also active in leaves, fruits and germinating seeds. ...
Asexual Reproduction in Plants
... 1. Auxin is a growth-promoting chemical that causes stems to bend. Auxin accumulates on the dark side of a plant and causes the cells to elongate. ...
... 1. Auxin is a growth-promoting chemical that causes stems to bend. Auxin accumulates on the dark side of a plant and causes the cells to elongate. ...
External factors and plant growth – Chapter 28
... In shoots, higher concentration on lower side promotes elongation and shoot ...
... In shoots, higher concentration on lower side promotes elongation and shoot ...
Plant Hormones and Response – Part 1 I. Plant Hormones A. Auxin
... Plant Hormones and Responses – Part 2 I. Plants responding to the environment A. Plants respond to changes in the environment by changing their growth and development. B. A stimulus sets in motion a signal transduction pathway causing the plant cells to respond accordingly. 1. For example, Bolting ...
... Plant Hormones and Responses – Part 2 I. Plants responding to the environment A. Plants respond to changes in the environment by changing their growth and development. B. A stimulus sets in motion a signal transduction pathway causing the plant cells to respond accordingly. 1. For example, Bolting ...
14.1 Plant Tropisms and Hormonal Control
... as abscission and occurs as a result of the disintegration of a special layers of cells at the base of the organ being dropped due to ABA. Development of seed dormancy and vernalisation requires the presence of ABA to cause gene expression in nuclei. ABA also carries a message when too much water is ...
... as abscission and occurs as a result of the disintegration of a special layers of cells at the base of the organ being dropped due to ABA. Development of seed dormancy and vernalisation requires the presence of ABA to cause gene expression in nuclei. ABA also carries a message when too much water is ...
Plant Hormones
... High cytokinin to auxin ratio causes differentiation of shoots. A low ratio of cytokinin to auxin causes root formation. Intermediate cytokinin to auxin ratio causes formation of roots as well as shoots. Intermediate cytokinin to low auxin causes growth of large amount of callus. ...
... High cytokinin to auxin ratio causes differentiation of shoots. A low ratio of cytokinin to auxin causes root formation. Intermediate cytokinin to auxin ratio causes formation of roots as well as shoots. Intermediate cytokinin to low auxin causes growth of large amount of callus. ...
Plant behaviour
... If plant FACES light, it is a POSITIVE phototropism. If it turns away from the light, it is a NEGATIVE phototropism ...
... If plant FACES light, it is a POSITIVE phototropism. If it turns away from the light, it is a NEGATIVE phototropism ...
PLANTS - BellaireAPBio
... • Cytokinins – cell division in roots, embryos, fruits • Gibberellins – stem elongation in mature regions, fruit development • Abscisic acid – dormancy, stress, abscission • Ethylene – fruit ripening ...
... • Cytokinins – cell division in roots, embryos, fruits • Gibberellins – stem elongation in mature regions, fruit development • Abscisic acid – dormancy, stress, abscission • Ethylene – fruit ripening ...
Plant Hormones
... loss, promotes cell division (with cytokinins), increases ethylene production, enforces dormancy of lateral buds produced by shoot apical meristems and other immature parts Cytokinins - stimulate cell division (with auxin), promote chloroplast development, delay leaf aging, promote formation of buds ...
... loss, promotes cell division (with cytokinins), increases ethylene production, enforces dormancy of lateral buds produced by shoot apical meristems and other immature parts Cytokinins - stimulate cell division (with auxin), promote chloroplast development, delay leaf aging, promote formation of buds ...
PPT summary of 9.1
... A panda walks into a café. He orders a sandwich, eats it, then draws a gun and proceeds to fire it at the other patrons. 'Why?' asks the confused, surviving waiter amidst the carnage, as the panda makes towards the exit. The panda produces a badly punctuated wildlife manual and tosses it over his s ...
... A panda walks into a café. He orders a sandwich, eats it, then draws a gun and proceeds to fire it at the other patrons. 'Why?' asks the confused, surviving waiter amidst the carnage, as the panda makes towards the exit. The panda produces a badly punctuated wildlife manual and tosses it over his s ...
3 slides
... A) Auxin controls orientation of seedling Phototropism = Directional growth with respect to light Gravitropism = Directional growth with respect to gravity Shoots stimulated to grow towards light (+ phototropism) and away from gravity (- gravitropism) Roots stimulated to grow away from light (- ...
... A) Auxin controls orientation of seedling Phototropism = Directional growth with respect to light Gravitropism = Directional growth with respect to gravity Shoots stimulated to grow towards light (+ phototropism) and away from gravity (- gravitropism) Roots stimulated to grow away from light (- ...
Ch. 5 Plant Hormones
... – It moves away from the light source, accumulating on the darker side – causing growth to occur more quickly at the darkest side – because of the difference in growth rates on the dark side and illuminated side of the shoot, it starts to bend ...
... – It moves away from the light source, accumulating on the darker side – causing growth to occur more quickly at the darkest side – because of the difference in growth rates on the dark side and illuminated side of the shoot, it starts to bend ...
Plant Hormones (Chapter 39)
... Leaf growth Stimulate flowering and development of fruit Affect root growth/differentiation Affect root growth/differentiation Stem elongation Leaf growth Stimulates cell division/growth Stimulate germination Delay senescence (cell death) Inhibits growth Closes stomata during wat ...
... Leaf growth Stimulate flowering and development of fruit Affect root growth/differentiation Affect root growth/differentiation Stem elongation Leaf growth Stimulates cell division/growth Stimulate germination Delay senescence (cell death) Inhibits growth Closes stomata during wat ...
Plant Responses to Abiotic Environment
... controlled by the pigment phytochrome. This pigment detects light. It exisits in two forms coreresponding to the two wavelengths of light: P665 and P725. ...
... controlled by the pigment phytochrome. This pigment detects light. It exisits in two forms coreresponding to the two wavelengths of light: P665 and P725. ...
Plant Hormones and Response – Part 1 I. Plant Hormones A. Auxin
... I. Plants responding to the environment A. Plants respond to changes in the environment by changing their growth and development. B. A stimulus sets in motion a signal transduction pathway causing the plant cells to respond accordingly. 1. For example, Bolting – This process is triggered by water (l ...
... I. Plants responding to the environment A. Plants respond to changes in the environment by changing their growth and development. B. A stimulus sets in motion a signal transduction pathway causing the plant cells to respond accordingly. 1. For example, Bolting – This process is triggered by water (l ...
Auxin
Auxins (plural of auxin /ˈɔːksɨn/) are a class of plant hormones (or plant growth substances) with some morphogen-like characteristics. Auxins have a cardinal role in coordination of many growth and behavioral processes in the plant's life cycle and are essential for plant body development. Auxins and their role in plant growth were first described by the Dutch scientist Frits Warmolt Went. Kenneth V. Thimann isolated this phytohormone and determined its chemical structure as indole-3-acetic acid (IAA). Went and Thimann co-authored a book on plant hormones, Phytohormones, in 1937.