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Exam 1A%2c 06 - 1 BTNY 210 Exam IA February 6 2006 Name Lab...

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1 BTNY 210 Name______________________________ Exam IA Lab Day and Time____________________ February 6, 2006 Multiple Choice: Choose the best answer and fill in the appropriate circle on the answer sheet. 1. “Without plants, life on this planet could not exist as it does today.” This is true because plants: a. produce food from CO 2 and water b. produce essential amino acids c. produce fiber for many human uses d. produce oxygen gas e. all of the above 2. Stems always have: 3. An onion is an example of a modified plant organ that helps this plant store food for the winter. This organ is a: 4. In the axil of every leaf of every plant there is a (an): True or false. Mark the T (A) for a true statement and F (B) for a false statement. 5. True or false. The youngest cells in a mature soybean plant are at the very tip of the stem. 6. True or false. All plant cells have cell walls.
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2 7. True or false. The primary and secondary cell walls are always located outside the plasma membrane. 8. True or false. The primary cell wall, when present, is located outside the secondary cell wall. 9. True or false. The plant cell wall contains the polysaccharide (carbohydrate) starch. 10. True or false. The plasma membrane is made up of a lipid bilayer. 11. True or false. The vast majority of cell divisions occur in the apical meristems and the vascular cambium. 12. True or false. At the end of S phase of the cell cycle each chromosome consists of two chromatids. 13. True or false. The only part of a cell that contains DNA is the nucleus. 14. True or false. The phase of mitosis when chromosomes all line up on the equatorial plane of the cell is called Anaphase. 15. The phase of the cell cycle when the cell doubles in size is: a. M phase (mitosis and cytokinesis) b. S phase c. G 1 phase d. G 2 phase e. B phase
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