[4] Instructions: Read each excerpt from a research paper and identify the dependent, independent, controlled variable (at least 1), experimental group/treatment, and control group.Independent variable: Dependent variable: Controlled variable: Experimental Group: Control group: 4. "The purpose of this project was to determine if Vitamin A tablets have any effecton tomato plants. A total of twelve Rutgers tomato plants each two inches tallwere planted in identical individual plastic pots using two cups of potting soil.Each plant received the same amount of water and sunlight during the three-weekexperiment. The twelve plants were divided into four groups of three plants each.One vitamin A tablet was added to each of the three plants in the first group byburying the tablet one inch from the stem and one inch deep. Two vitamin Atablets were added to the second group of three plants in a similar manner. Thethird group of three plants had three tablets planted in the soil. The fourth groupof three plants had no vitamin A tablets added to the soil and served as thecontrol group. The height of each plant was measured and recorded at the start ofthe experiment and every 7 days thereafter. At the end of the experiment (21 days),the stems were cut across at a height of 3 inches. Experimental groups showedless development and slower growth rates than plants in the control group. Thedata was analyzed and the conclusion was drawn that giving vitamin A tablets totomato plants did not improve growth as each of the three experimental groupsfailed to produce plants that were taller or had thicker stems than those in thecontrol group."

Independent variable- variable or factor which is changed in the experiment to observe its effect.…

Instructions: Read each excerpt from a research paper and identify the dependent, independent, controlled variable (at least 1), experimental group/treatment, and control group. Independent variable: Dependent variable:

Instructions: Read each excerpt from a research paper and identify the dependent, independent, controlled variable (at least 1), experimental group/treatment, and control group. Independent variable: Dependent variable:

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter35: Plant Nutrition

Section: Chapter Questions

Problem 7TYK

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Intelligence

Intelligence refers to the intellectual functioning that compares a person's intelligence quotient (IQ) with other people of the same age. In other words, it is the ability to understand circumstances or situations and arrive at appropriate solutions. Both animals and plants exhibit intelligence.

Question

[4] Instructions: Read each excerpt from a research paper and identify the dependent, independent, controlled variable (at least 1), experimental group/treatment, and control group.

Independent variable:
Dependent variable:
Controlled variable:
Experimental Group:
Control group:

4. "The purpose of this project was to determine if Vitamin A tablets have any effect
on tomato plants. A total of twelve Rutgers tomato plants each two inches tall
were planted in identical individual plastic pots using two cups of potting soil.
Each plant received the same amount of water and sunlight during the three-week
experiment. The twelve plants were divided into four groups of three plants each.
One vitamin A tablet was added to each of the three plants in the first group by
burying the tablet one inch from the stem and one inch deep. Two vitamin A
tablets were added to the second group of three plants in a similar manner. The
third group of three plants had three tablets planted in the soil. The fourth group
of three plants had no vitamin A tablets added to the soil and served as the
control group. The height of each plant was measured and recorded at the start of
the experiment and every 7 days thereafter. At the end of the experiment (21 days),
the stems were cut across at a height of 3 inches. Experimental groups showed
less development and slower growth rates than plants in the control group. The
data was analyzed and the conclusion was drawn that giving vitamin A tablets to
tomato plants did not improve growth as each of the three experimental groups
failed to produce plants that were taller or had thicker stems than those in the
control group."

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