AP Biology Lab 4: Plant Pigments and Photosynthesis



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Paul Andersen explains how pigments can be separated using chromatography. He shows how you can calculate the Rf value for each pigment. He then explains how you can measure the rate of photosynthesis using leaf chads and water containing baking soda.

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Plant Control



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Paul Andersen explains how plants use hormones to respond to their environment. The following hormones are detailed; auxin, cytokinins, gibberelins, abscisic acid and ethylene.

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Plant Nutrition and Transport



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Paul Andersen explains how nutrients and water are transported in plants. He begins with a brief discussion of what nutrients are required by plants and where they get them. He shows you dermal, vascular and ground tissue in monocot and dicot roots, stems and leaves. He then explains how water is pulled up a tree in xylem and how sugar is pushed in a plant through phloem.

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Plants



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Life on Earth 009 – Plants

Paul surveys the Kingdom Plantae. He begins with a brief description of the phylogeny of land plants. He then describes the defining characteristics of plants, including cell walls, embryophytes, alternation of generation and photosynthesis. He briefly describes the sporophyte and the gametophyte. He finishes with brief discussion of plant evolution and includes major divisions, like bryophytes, ferns, gymnosperms, and angiosperms.

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Plant and Animal Defense



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023 – Plant and Animal Defense Mechanisms

Paul Andersen describes how plants and animals defend themselves against pathogens. He begins by discussing the hypersensitive response in plants as a nonspecific form of immune response. He then discusses both the humoral and cell-mediated immune response in mammals. A brief discussion of the chicken pox, small pox and HIV is included.

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All of the images are licensed under creative commons and public domain licensing:
Chromosome, n.d.
“File:Antibody.svg.” Wikipedia, the Free Encyclopedia. Accessed November 22, 2013.
“File:Edward Jenner by James Northcote.jpg.” Wikipedia, the Free Encyclopedia. Accessed November 22, 2013.
“File:Immune Response.jpg.” Wikipedia, the Free Encyclopedia. Accessed November 22, 2013.
“File:Lymphocyte Activation Simple.png.” Wikipedia, the Free Encyclopedia. Accessed November 22, 2013.
Jonnymccullagh. English: 5 Year Old Boy with Chicken Pox, April 16, 2008. Own work.
Manske, Magnus. Nicotiana Sylvestris, Cambridge University Botanic Garden, July 26, 2009. Own work.
Nicotiana Tabacum, Cambridge University Botanic Garden, July 26, 2009. Own work.
Providers, Photo Credit:Content. English: A Transmission Electron Micrograph of Smallpox Viruses., [object HTMLTableCellElement]. This media comes from the Centers for Disease Control and Prevention’s Public Health Image Library (PHIL), with identification number #2292.

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Plant Structure



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Paul Andersen explains the major plants structures. He starts with a brief discussion of monocot and dicot plants. He then describes the three main tissues in plants; dermal, ground and vascular. He also describes the plant cells within each of these tissues; epidermis, parenchyma, collenchyma, sclerencyma, xylem and phloem. He describes both primary and secondary growth in plants. He finishes the podcast with a discussion of double fertilization in plants.

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