Lect13S2011 - Midterm Exam Reminder Midterm First Exam:...

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Midterm Exam Reminder Midterm Exam Reminder First Exam: February 14, 20110. Bring # 2 pencil to take exam. Bring student ID Enter your Student Identification Number, e.g. 12345678, no hyphen, no space!
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Instructions for Scan Trons Instructions for Scan Trons DO NOT USE YOUR Social Security Number! Start number from left margin. Be sure to fill in “bubbles”, i.e.  Write your Name, last name first, first name last and fill in “bubbles”. Your score may not be posted if the above is not correct.
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Plant Hormones Plant Hormones
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Plant Hormones Plant Hormones Plant response to environment Unlike animals, can’t move away or towards stimulus. Plants adjust growth in order to respond to change in environment. Adjustment of growth made possible by plant hormones.
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Plant Hormones Plant Hormones Plant response to environment Response of interaction between plant and environmental signals: Reception (of signal) Transduction Response
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Plant Hormones Plant Hormones Hormone serves as signaling molecule: Defined as A compound that is produced in minute concentration, in one part of a plant, and transported to another part where it binds to specific receptors & triggers a response to target cells and tissues . Derived from animal definition.
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Plant Hormones Plant Hormones Very different from animal hormones: Plant and animals very different. Reaction differs in different part of the plant. Reaction differs with age. Reaction differs with concentration. Work in combination with one another.
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Plant Hormones Plant Hormones Six classes of plant hormones are recognized: Auxins or Indoacetic Acid ( IAA ) Gibberellic Acid ( GA ) or Gibberellins Abscisic Acid ( ABA ) Cytokinins ( CK ) Ethylene Brassinosteroids
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Auxins Auxins Referred to as a class, but only one naturally occurring auxin, Indoacetic Acid (IAA) Other auxins are synthetic First hormone discovered Initial discovery by Charles and Francis Darwin (1880)
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monocots growing towards unilateral light source. Auxins
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This note was uploaded on 08/09/2011 for the course BIOL 172 taught by Professor Huddleston,m during the Spring '08 term at University of Hawaii, Manoa.

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Lect13S2011 - Midterm Exam Reminder Midterm First Exam:...

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