Under controlled conditions, a transpiration experiment was conducted using two differentplant species, A and B. Each plant species was exposed to a low-humidity environment anda high-humidity environment with all other conditions kept the same. The transpirationrate was measured over a period of one hour. The data was graphed as shown below.ABtranspiration rate (pl/cm²min)с0.20.180.160.140.120.10.080.06A bar graph of the transpiration rates of two plants under different humid conditionsD0.040.02low humidity40%In order to see the effect the change in humidity had on the transpiration rate, what would be a proper control to add to the study?high humidity80%running the same experiment multiple times to collect additional dataadding more water to the original plants and running the experiment againgrow another set of plants at normal humiditygrowing more plants at 0% and 100% humiditySpecies ASpecies B

Answered: In order to see the effect the change…

Human Anatomy & Physiology (11th Edition)

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Under controlled conditions, a transpiration experiment was conducted using two different
plant species, A and B. Each plant species was exposed to a low-humidity environment and
a high-humidity environment with all other conditions kept the same. The transpiration
rate was measured over a period of one hour. The data was graphed as shown below.
A
B
transpiration rate (pl/cm²min)
с
0.2
0.18
0.16
0.14
0.12
0.1
0.08
0.06
A bar graph of the transpiration rates of two plants under different humid conditions
D
0.04
0.02
low humidity
40%
In order to see the effect the change in humidity had on the transpiration rate, what would be a proper con
trol to add to the study?
high humidity
80%
running the same experiment multiple times to collect additional data
adding more water to the original plants and running the experiment again
grow another set of plants at normal humidity
growing more plants at 0% and 100% humidity
Species A
Species B

Expert Solution

Introduction

Humidity and Transpiration in plants :

Humidity and transpiration in plants are inversely related to each other. As the humidity of the air surrounding the plant rises, the rate of transpiration gradually decreases. High humidity corresponds to the high moisture content in the environment. When there is already enough moisture in the air plants perform low transpiration.

Correct answer :

C. Grow another set of plants at normal humidity

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