Exhibit 7-12: an Investigator Is Studying the Effect of Two

question 11

Multiple Choice

Exhibit 7-12: An investigator is studying the effect of two physical fitness programs (M and N) on boys and girls.The experimental design is a 2 * 2 factorial design.The results of the investigation might be one of the following four conditions.
$\begin{array}{l}\begin{array}{lll}&\text { Condition (a) }\\&\mathrm{M} & \mathrm{N} \\\text { Boys }&\mathrm{X}=50 & \mathrm{X}=60 \\\text { Girls }&\mathrm{X}=60 & \mathrm{X}=50\end{array}\begin{array}{lll}&\text { Condition (b) }\\&\mathrm{M} & \mathrm{N} \\\text { Boys }&\mathrm{X}=50 & \mathrm{X}=60 \\\text { Girls }&\mathrm{X}=40 & \mathrm{X}=60\end{array}\end{array}$

$\begin{array}{l}\begin{array}{lll}&\text { Condition (c) }\\&\mathrm{M} & \mathrm{N} \\\text { Boys }&\mathrm{X}=50 & \mathrm{X}=40 \\\text { Girls }&\mathrm{Y}=60 & \mathrm{Y}=50\end{array}\begin{array}{lll}&\text { Condition (d) }\\&\mathrm{M} \quad\quad\quad\quad\quad\quad\quad\quad \mathrm{N} \\&\text { None of these condition }\\\\\end{array}\end{array}$

-Refer to Exhibit 7-12.Which condition shows two possible main effects but no interaction effect?

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Definitions:

Companion Cell

In phloem, cell that provides metabolic support to its partnered sieve element.

Source Region

An area where specific air masses form, characterized by its uniform temperature and humidity patterns influencing weather and climate.

Sugars

Simple carbohydrates that are used as a primary energy source for living organisms.

Perforation Plate

A structure found within the vessel elements of plants, characterized by a membrane or wall with holes that allow for the movement of water and solutes.