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Quiz 4A%2c 09 - day plants to flower 6 What is the name of...

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BTNY 210, S2009 Name:___________________________ Lab day and time__________________ Quiz #4A February 18, 2009 Circle the correct answer or write what is requested . 1. The name of the plant hormone that is most often used to enhance fruit ripening is: a. Abscisic Acid (ABA) b. Auxin (IAA) c. Cytokinin d. Gibberellic Acid (GA) e. Ethylene 2. True or False. The hormone that is most responsible for dormancy in seeds is Auxin. 3. (2 pts.) Describe what happens in a horizontal stem tip during gravitropism that causes the tip to grow upward. You may use a diagram to help with your description if you wish. 4. What is the name of the plant hormone most responsible for seed germination? 5. What color of light best stimulates lettuce seed germination and interrupts long nights to cause short
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Unformatted text preview: day plants to flower? 6. What is the name of the pigment that perceives the light that triggers the effects in question 5? 7. The name of the cell type that has only a thin primary cell wall, is living when mature, and can be found in many locations in stems, leaves, and roots: a. parenchyma b. collenchyma c. sclerencyma sclerid d. sclerenchyma fiber e. b and c are correct 8. Conifers contain only one type of water conducting cell, and it is called: a. vessel element b. sieve tube element c. companion cell d. tracheid e. none of the above 9. True or False. Xylem is composed of tracheids, vessels, and companion cells....
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