'Cell elongation' diaporamas de présentation

Anatomy & Growth of Angiosperms

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Sensory Systems in Plants

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Chapter 39

Chapter 39. Plant Responses to Internal and External Signals. Overview: Stimuli and a Stationary Life. Linnaeus noted that flowers of different species opened at different times of day and could be used as a horologium florae , or floral clock

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Chapter 39

Chapter 39. Plant Responses to Internal and External Signals. Chapter 39. Response to stimuli. Plants, being rooted to the ground must respond to whatever environmental change comes their way

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Plant Responses to Signals

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Growth regulators Auxins Cytokinins Gibberellins Abscisic acid Ethylene Brassinosteroids

Growth regulators Auxins Cytokinins Gibberellins Abscisic acid Ethylene Brassinosteroids All are small organics: made in one part, affect another part. Auxin Levels No way to run out of IAA! [IAA] depends on metabolism Most cells are IAA sinks! IAA is made at shoot apex &

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PLANT GROWTH REGULATORS

PLANT GROWTH REGULATORS. THE FOLLOWING POWERPOINT PRESENTATION IS BASED, IN PART, ON MATERIAL ACCESSED ON THE INTERNET (4-12-06) http://styx.nsci.plu.edu/~dhansen/hormones2.ppt#257,2,Processes in growth

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POTASSIUM IN PLANT GROWTH AND YIELD by Ismail Cakmak Sabanci University Istanbul, Turkey

POTASSIUM IN PLANT GROWTH AND YIELD by Ismail Cakmak Sabanci University Istanbul, Turkey. Low K. High K. High K. Low K. High K. Low K. Low K. High K. Control. K Deficiency. Cakmak et al., 1994, J. Experimental Bot. POTASSIUM IN CROP PRODUCTION. Alleviation of Effects

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Circadian Rhythms in Synechococcus elongatus

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Plant adaptation and response to environmental variability

Plant adaptation and response to environmental variability. In the environment there are both spatial and temporal variations in abiotic factors. All organisms including plants have ranges of tolerance to various abiotic factors.

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Plant structure and growth

Plant structure and growth . Topic 9.1. Assessment Statements. 9.1.1 Draw and label plan diagrams to show the distribution of tissues in the stem and leaf of a dicotyledonous plant. 9.1.2 Outline three differences between the structures of dicotyledonous and monocotyledonous plants.

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Control Systems in Plants

Control Systems in Plants. Plant Hormones. What is a Plant Hormone ? Compound produced by one part of an organism that is translocated to other parts where it triggers a response in target cells and tissues. Functions of Plant Hormones.

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Control Systems in Plants

Control Systems in Plants. Plant Hormones. What is a Plant Hormone ? Compound produced by one part of an organism that is translocated to other parts where it triggers a response in target cells and tissues. Functions of Plant Hormones.

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Plant Hormones

Plant Hormones. A hormone is a complex chemical produced in very small amounts Usually they are produced in one part of an organism and travel to another part to effect a target cell Insulin is an example of a hormone we studied in the human digestive system.

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Plant Tissue Culture Paper IV Unit III T.Y.B.Sc. Biotechnology

Plant Tissue Culture Paper IV Unit III T.Y.B.Sc. Biotechnology. By Mr. Ketan Thatte. Introduction. What is Plant Tissue Culture?

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Biol 352 Lecture 10 Brassinosteroids February 7, 2007

Biol 352 Lecture 10 Brassinosteroids February 7, 2007. Review: ABA ABA is the major hormone responsible for seed dormancy and water stress response. Key enzymes for biosynthesis: ZEP (ABA1), NCED (VP14), and ABA-aldehyde oxidase (ABA3). ABA antagonizes the action of GA in seed germination.

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Plant Hormones

Plant Hormones. B3f. OBJECTIVES. Key Objective Describe the role of hormones in plant growth C/D Use the words phototropic and geotropic to describe the growth of roots and shoots Identify the chemicals responsible for growth in plants A/B

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PLANT PLAN

PLANT PLAN. Angiosperms. Flowering plants Review: seed -> * embryo hypocotyls -> leaves epicotyls -> shoot radical -> primary root s hoots -> * stems, * leaves, and * flowers Primary root -> * secondary root Sporophyte 2n. More information on cells. Cell division (mitosis) 2n

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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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