Plant responses

Jul 22, 2014

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Plant responses. Why do plants need to respond to their environment?. Tropisms Directional growth responses of plants Phototropism Geotropism Chemotropism Thigmotropism. Apical meristem of a shoot

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Plant responses

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Plant Responses

Plant Responses. How plants move and communicate. Early Inquiry. The houseplant observation. For years, people noticed that houseplants tended to lean toward a source of light. Charles Darwin and his son Francis, wondered why. How does a plant “know” where to lean?. Darwin’s Oats.

2.06k views • 69 slides

Plant Responses

Plants respond to stimuli, as all other living organisms do A tropism is plant growth toward or away from a unidirectional stimulus positive = growth toward negative = growth away These are due to differential growth One side of a cell is elongating faster than the other.

1.34k views • 16 slides

Plant Responses

807 views • 6 slides

Plant Responses

Plant Responses. Plant Response. Tropism Positive (toward stimulus) vs. Negative (away from stimulus) Phototropism Geotropism ( gravitropism ) Nastic Movement Nastic. Photoperiodism. Short day Long day Day neutral. Alternation of Generations. Alternation of Generations.

370 views • 11 slides

Plant Responses

Plant Responses. Part 4. Stimulus and Response. Stimulus – causes a response Response – reaction to a stimulus Ex: clapping in someone’s face Stimulus – clap Response – flinching. Tropisms. Plant’s response to an external stimulus Not reversible, but can change direction

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Plant Responses and Adaptations

Plant Responses and Adaptations. Plant Hormones. A hormone is a chemical in an organism that causes a physiological change Hormones in plants regulate growth and development. Auxins :. Cause cell elongation in apical meristems of plant stems Delay fruit formation. Gibberellins:.

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Plant Responses and Adaptations

Plant Responses and Adaptations. Hormones. Just like animals, plants rely on hormones to control growth and development, and responses to environmental stimuli Recall that hormones are chemical messengers that signal changes in an organism. The hormone Auxin.

1.63k views • 19 slides

PLANT RESPONSES

PLANT RESPONSES. Do plants have minds?. ??? Read the article and decide for yourself. Do plants have stress? Do they respond?. What are some abiotic stresses faced by plants?. *Turn to a partner & list some abiotic stresses faced by plants*. Abiotic Environmental Stresses.

628 views • 20 slides

Plant responses

Plant responses. Tropism – a plant’s growth response toward or away from a stimulus. Positive tropism – when a plant grows toward the stimulus Negative tropism – when a plant grows away from the stimulus . Plants show growth responses, or tropisms, to: Touch Light Gravity.

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Plant Responses

Plant Responses. How plants move and communicate. Tropisms. Tropisms are the growth of a plant toward or away from a stimulus, including: Phototropism: in response to light Gravitropism (geotropism): in response to gravity Thigmotropism : in response to touch

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Plant responses

Plant responses. May 6, 2014. How are plants like other organisms?. They respond to stimuli That is they react to their environment How? Tropisms --automatic, movement of a plant in response to particular stimuli Can react by growing toward (positive) or away (negative).

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Plant Responses

Plant Responses. Plant Hormones. Hormones are chemical messengers that coordinate the different parts of a multicellular organism. They are produced by one part of the body and transported to another.

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Plant Responses to Temperature

Plant Responses to Temperature. Chapter 10; p322. Plants surviving heat. Plants and Energy. Plants receive a lot of energy from the sun, but only use about 1% of it. They generally maintain a constant internal temperature and regulate their temperature through: Radiation Transpiration

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Plant Responses

Plant Responses. 3.3 pages 70-73. Plants Respond?. Stimulus: Plant stimuli: Tropism:. something that incites to action. Light, gravity, and changing seasons. Growth in response to a stimulus. Phototropism. Phototropism: How does the plant bend?.

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Plant Responses

Plant Responses. How plants move. www.wou.edu/~bledsoek/103materials/.../ Plant _ responses .ppt. Early Inquiry. The houseplant observation. For years, people noticed that houseplants tended to lean toward a source of light.

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Chapter 33: Plant Responses

Chapter 33: Plant Responses. 33-1 Plant Hormones. 33-2 Plant Movements. 33-3 Seasonal Responses. Revisiting Evolution. Plants have evolved a number of adaptations to their environment that help with their reproduction and survival. Assessing Prior Knowledge.

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Plant Responses

Plant Responses. F215 control, genomes and environment Module 4 – responding to the environment. Learning Outcomes. Explain why plants need to respond to their environment in terms of the need to avoid predation and abiotic stress. Plant Responses.

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Plant Orientation Responses

Plant Orientation Responses. Introductory video. http://www.youtube.com/watch?v=zctM_TWg5Ik ( Plant Physiology: Phototropic Response). Biozone p166 together!. Tropisms and Growth responses.

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Plant responses to hormones

Plant responses to hormones. What the spec says…. Types of plants hormone. Cell division. Cell elongation. Auxins Gibberellins Cytokinins Abscisic acid Ethene. Promotors of growth. Initiation of organs. Differentiation. Inhibitors of growth / Antagonists to growth stimulators.

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Plant timing responses

Plant timing responses. Like animals, plants have both exogenous and endogenous factors that control rhythms. Circadian rhythms shown by plants include: a) opening and closing of stomata b) sleep movements, for example, leaves of beans droop at night

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Plant stresses and responses

Plant stresses and responses. De Block et al., Plant J. 41:95 (2005). Plant Physiol Biotechnol 3470 March 21, 2006 Chp 21. Plants are sessile and must deal with stresses in place. Plants cannot avoid stress after germination How plants deal with stress has implications in

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Plant Responses

Plant Responses. AP Biology Chapter 39. Plants respond by signal transduction pathways just like we do!. Plants have cellular receptors that detect changes in their environment For a stimulus to elicit a response, certain cells must have an appropriate receptor

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