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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Transcribed Image Text:A student wanted to compare the transpiration rates of two different plant species at varying levels of humidity. The results are recorded in the table shown. Each plant
group was given the same amount of water and light throughout the investigation. Which procedure should have been performed to prevent error in this investigation?
Comparison of Transpiration Rates Over a 60 Hour Period
Humidity
(%)
Plant Species
Group
|(10 plants each)
Type of Soil
(200 g)
Average
Transpiration Rate
(g/dm2/hr)
Species 1
23.5
35
Sard
Species 2
21.6
Species 1
20.4
46
Sand
Species 2
23.8
Species 1
18.8
58
Clay
Species 2
22.9
Species 1
14.4
70
Clay
Species 2
16.5
The percentage of humidity should have been
kept constant
One type of plant should have been tested
Fewer plants should have been included in
each group
d
Both groups should have been tested in the
same soil type at each humidity level
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