hmwk 2 - BTNY 210 S 2010 Page 2 4 Sketch a segment of the...

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Assignment # 2 (5 points) Due at beginning of class on Wednesday, March 3, 2010 1. Describe the process by which blue light regulates when a plant can become green and begin to conduct photosynthesis. It might be helpful to include a sketch indicating the steps involved. 2. Sketch two guard cells surrounding a stomate and describe the chemical changes that occur that cause the stomate to close. 3. Identify the following primary tissues in the photomicrograph below: epidermis, parenchyma, collenchyma, phloem, xylem, and cambium . Be sure your labeled arrow is specifically pointing to a single cell in this tissue.
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Unformatted text preview: BTNY 210, S 2010 Page 2 4. Sketch a segment of the cross section of a root, label the epidermis, cortex, endodermis, phloem, pericycle, and xylem . Then with two different colors of pencil or ink, indicate the symplastic and apoplastic routes by which water can get into the xylem in the vascular cylinder. 5. Illustrate and explain how the DNA in a chromosome consisting of a single chromatid at the end of mitosis can be replicated during S 1 phase of the Cell Cycle....
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This note was uploaded on 02/19/2011 for the course BTNY 210 taught by Professor Staff during the Spring '08 term at Purdue.

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hmwk 2 - BTNY 210 S 2010 Page 2 4 Sketch a segment of the...

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