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Thirty con seedlings of equal size were randomly assigned to one of three treatment groups. At the beginning of the experiment, the plants in group I were dried and the mass was determined. The plants in group II were maintained in light for a week. The plants in group II were maintained in the dark for a week. All conditions, other than light, were the same for groups Il and IlII. At the end of the week, the plants in groups Il and IIII were dried and the mass was determined. The experimental results are provided in the table.

Thirty con seedlings of equal size were randomly assigned to one of three treatment groups. At the beginning of the experiment, the plants in group I were dried and the mass was determined. The plants in group II were maintained in light for a week. The plants in group II were maintained in the dark for a week. All conditions, other than light, were the same for groups Il and IlII. At the end of the week, the plants in groups Il and IIII were dried and the mass was determined. The experimental results are provided in the table.

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Thirty corn seedlings of equal size were randomly assigned to one of three treatment groups. At the beginning of the experiment, the plants in group I were dried and the mass was determined. The plants in group Il were maintained in light for a week. The plants in group III were maintained in the dark for a week. All conditions, other than light, were the same for groups IlI and III. At the end of the week, the plants in groups Il and III were dried and the mass was determined. The experimental results are provided in the table. Initial Dry Mass of 10 Plants (g) Dry Mass of 10 Plants After One Week (g) Change in Dry Mass of 10 Plants Over One Week (g) Treatment Group Treatment Nohe 14.8 II Light 32.8 +18 III Dark 11.7 -3.1 (a) To explain the increase in mass of the light-grown plants, identify ONE inorganic source of new plant mass and connect it to the cellular process underlying the increase in mass. (b) To explain the decrease in mass of the dark-grown plants, identify the overall chemical reaction that is occurring in the plant cells and connect it to the cellular process underlying the decrease in mass.
Transcribed Image Text:Thirty corn seedlings of equal size were randomly assigned to one of three treatment groups. At the beginning of the experiment, the plants in group I were dried and the mass was determined. The plants in group Il were maintained in light for a week. The plants in group III were maintained in the dark for a week. All conditions, other than light, were the same for groups IlI and III. At the end of the week, the plants in groups Il and III were dried and the mass was determined. The experimental results are provided in the table. Initial Dry Mass of 10 Plants (g) Dry Mass of 10 Plants After One Week (g) Change in Dry Mass of 10 Plants Over One Week (g) Treatment Group Treatment Nohe 14.8 II Light 32.8 +18 III Dark 11.7 -3.1 (a) To explain the increase in mass of the light-grown plants, identify ONE inorganic source of new plant mass and connect it to the cellular process underlying the increase in mass. (b) To explain the decrease in mass of the dark-grown plants, identify the overall chemical reaction that is occurring in the plant cells and connect it to the cellular process underlying the decrease in mass.
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