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To which of the two lighting conditions would you expose seedlings if you wanted to maximize the rate of photosynthesis in the plants as well as minimizing your costs for electricity to light the plants in the greenhouse?

To which of the two lighting conditions would you expose seedlings if you wanted to maximize the rate of photosynthesis in the plants as well as minimizing your costs for electricity to light the plants in the greenhouse?

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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To which of the two lighting conditions would you expose seedlings if you wanted to maximize the rate of photosynthesis in the plants as well as minimizing your costs for electricity to light the plants in the greenhouse?
 
A. Low light only.
 
B. Moderate light only.
 
C. Low light for the first 12 hours and then moderate light afterwards.
 
D. Moderate light for the first 12 hours and then low light afterwards.
Scientists use data tables to organize their experimental data. Often, the data are graphed because a graph can make the data easier to interpret. Graphs quickly show a relationship between two variables. Scientists exposed two groups of seedlings to various amounts of light. One group was exposed to low light conditions (LL) and the other group was exposed to moderate light (ML) conditions. Scientists measured the amount of chlorophyll in the seedlings at regular intervals during a 48-hour period. The amount of chlorophyll in the seedlings is expressed in micrograms of chlorophyll per gram of seedling (µg/g). The data from both groups are shown in the graph below. **GRAPH 1. AMOUNT OF CHLOROPHYLL WITH DIFFERENT AMOUNTS OF LIGHT** - **Description of the Graph:** - The vertical axis (y-axis) represents the amount of chlorophyll in micrograms per gram of seedling (µg/g), ranging from 0 to 600. - The horizontal axis (x-axis) represents time in hours, ranging from 0 to 48. - Two lines are plotted: - A solid line representing seedlings exposed to low light. - A dashed line representing seedlings exposed to moderate light. - At 0 hours, both groups start with a similar baseline amount of chlorophyll. - Over time, the seedlings exposed to moderate light show a significant increase in chlorophyll, reaching approximately 550 µg/g at 48 hours. - The seedlings exposed to low light show minimal increase, remaining below 100 µg/g throughout the 48-hour period.
Transcribed Image Text:Scientists use data tables to organize their experimental data. Often, the data are graphed because a graph can make the data easier to interpret. Graphs quickly show a relationship between two variables. Scientists exposed two groups of seedlings to various amounts of light. One group was exposed to low light conditions (LL) and the other group was exposed to moderate light (ML) conditions. Scientists measured the amount of chlorophyll in the seedlings at regular intervals during a 48-hour period. The amount of chlorophyll in the seedlings is expressed in micrograms of chlorophyll per gram of seedling (µg/g). The data from both groups are shown in the graph below. **GRAPH 1. AMOUNT OF CHLOROPHYLL WITH DIFFERENT AMOUNTS OF LIGHT** - **Description of the Graph:** - The vertical axis (y-axis) represents the amount of chlorophyll in micrograms per gram of seedling (µg/g), ranging from 0 to 600. - The horizontal axis (x-axis) represents time in hours, ranging from 0 to 48. - Two lines are plotted: - A solid line representing seedlings exposed to low light. - A dashed line representing seedlings exposed to moderate light. - At 0 hours, both groups start with a similar baseline amount of chlorophyll. - Over time, the seedlings exposed to moderate light show a significant increase in chlorophyll, reaching approximately 550 µg/g at 48 hours. - The seedlings exposed to low light show minimal increase, remaining below 100 µg/g throughout the 48-hour period.
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