top-rated free essay

Ap Bio Final Project

By kpanelli18 May 06, 2013 408 Words


Why use Abscitrim?
The active ingredient in Abscitrim is Abscisic Acid. Abscitrim is highly concentrated form that that is potent and highly effective.

What it does:
- induces the closure in stomata to prevent transpiration and water loss - prevents fruit ripening
- promotes seed dormancy by stopping cell growth and seed germination -stops synthesis of Kinetin nucleotide
-Kinetin: cytokinin that promotes cell division
-down regulate enzymes needed for photo synthesis
-dials down growth to levels just needed for survival to prevent water loss

Where is ABA produced and how?
ABA is a naturally occurring compound in plants and is produced in the terminal bud, or top of the plant. It is synthesized in the Plastidal 2- C- Methyl- D- erythritol- 4- phsophate (MEP) Pathway. The production of ABA is accentuated by stresses such as water loss and freezing temperatures. It has a carbon backbone of C15 and is formed after carotenoids, pigments produced by the chloroplast which have 40 carbons in MEP during biosynthesis. Zeaxanthin is the first ABA precursor. The transport of ABA can occur in both xylem and phloem tissues. It can also be translocated through paranchyma cells. The movement of abscisic acid in plants does not exhibit polarity like auxins. ABA is capable of moving both up and down the stem

What is Abscisic
Acid (ABA)?
Absiscic Acid is the hormone that helps prepare plants for winter. It suspends primary and secondary growth. It also promotes drought tolerance. Abscisic Acid does not play the main role in bud dormancy or leaf abscission ( the process by which plants drop leaves in preparation for winter), but it continues to contribute.


Background and History-
It was in 1963 by Frederick Addicott when he and his associates were studying the compounds that cause abscission of cotton fruit. It was first called Abscisin II because it was thought to play a major role in the abscission of flowers. Another group headed by Philip Wareing was studying bud dormancy in woody plants and came up with the name “dormin”. Later on both scientific psychologist groups decided to call it its present name.

Campbell, N. A. (2011). Biology(ap edition). (ninth ed., pp. 831-832). San Francisco: Pearson Education inc.

Abscisic acid. (n.d.). Retrieved from

Doss T. Plant Hormone Advertisement
pg 3( Abscisic Acid)




Shed Leaves NOT tears!
Masaya Takahashi, Stephanie Wang, Kendall Panelli & Adele de Crespigny

Cite This Document

Related Documents

  • AP Bio fact sheet

    ... Osteoporosis Why is it a problem? Osteoporosis is a disease in which the bones become weak and are more likely to break. People with osteoporosis most often break bones in the hip, spine, and wrist. These issues result in the loss of bones which may change in some cases and not in others. How is it diagnosed? An accurate and common test d...

    Read More
  • ap bio Enzyme Catalysis

    ...for the amount of H2O2 in the sample each time. Also use a burette to add KMnO2, a drop at a time, until a pink or brown color is obtained. If the endpoint is overshot, remove another 5-mL sample and repeat that process of titration. Results: The enzyme in the reaction was catalase solution. The substrate in the solution was H2O2 The pro...

    Read More
  • AP Bio 2012 Q1

    ...AP® BIOLOGY 2012 SCORING GUIDELINES Question 1 Note: At least 1 point must be earned from each of parts (a), (b), (c), and (d) in order to earn a maximum score of 10. The ability to reproduce is a characteristic of life. (a) Describe the process of embryological development in a typical vertebrate embryo, beginning with a fertilized egg ...

    Read More
  • Ap Bio Notes

    ...Chapter 3 Molecules of Life I. Carbon 1. 6 electrons- (4 valence) has the ability to bond with 4 other elements 2. Hydrocarbons- (contains only C & H) 3. Asymmetric carbon- attached to 4 different atoms or groups of atoms II. Isomers - Compounds having the same molecular formula but different structure and properties 1. Structural-...

    Read More
  • Final Project Psychology 1

    ...Schizophrenia I chose to write my research paper over Schizophrenia. It is a psychological disorder that I have always found fascinating. Approximately 20% of North Americans will be affected by a mental illness during the course of their lifetime. (MHA, ‘What You Should Know About Mental Illnesses) More specifically, 1 in 100 Americans wi...

    Read More
  • Ap Bio

    ...Name: ______________________________________ Date: ________________________ Student Exploration: Dehydration Synthesis Vocabulary: carbohydrate, chemical formula, dehydration synthesis, disaccharide, glucose, hydrolysis, monosaccharide, polysaccharide, valence Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. If y...

    Read More
  • Ap Bio

    ...Camren Allen Concept Check 1.1: 1.) A biosphere has an ecosystem that consists of all living things in an area. An ecosystem consists of communities which hold organisms that live in a specific area. A community consists of populations of all the individual organisms in a specific area. A population consists of living things called organis...

    Read More
  • Ap Bio Final Study

    ...AP bio final study Study online at 1. 2 carbon atoms are fed into the citric acid cycle as a result of the oxidation of one molecule of pyruvate falling statoliths trigger gravitropism 2 9. acrosomal reaction 2. a botanist discovers a plant that lacks the ability to form starch grains in root cells, yet the...

    Read More

Discover the Best Free Essays on StudyMode

Conquer writer's block once and for all.

High Quality Essays

Our library contains thousands of carefully selected free research papers and essays.

Popular Topics

No matter the topic you're researching, chances are we have it covered.