Consider the table.

Types of Bacteria
\begin{tabular}{|l|c|c|}
\hline
Form & Shape & Associated disease \\
\hline
Coccus & [tex]$X$[/tex] & Strep throat \\
\hline
Bacillus & Rod shaped & [tex]$Y$[/tex] \\
\hline
Spirillum & Spiral & Cholera \\
\hline
\end{tabular}

Which best describes [tex]$X$[/tex] and [tex]$Y$[/tex]?

A. [tex]$X=$[/tex] Spherical; [tex]$Y=$[/tex] E. coli
B. [tex]$X=$[/tex] Comma shaped; [tex]$Y=$[/tex] Whooping cough
C. [tex]$X=$[/tex] Oval shaped; [tex]$Y=$[/tex] S. aureus
D. [tex]$X=$[/tex] Rod shaped; [tex]$Y=$[/tex] Pneumonia



Answer :

To determine the best descriptions for \(X\) and \(Y\) in the table, we need to understand the common shapes and associated bacteria for each form listed.

1. Coccus:
- The shape associated with coccus bacteria is spherical.
- So, \(X\) is best described as spherical.

2. Bacillus:
- Bacillus describes rod-shaped bacteria.
- There are numerous types of rod-shaped bacteria, but one commonly known type is E. coli, which is well-known in scientific and medical contexts.

3. Spirillum:
- The shape of spirillum bacteria is spiral.
- This is associated with diseases such as cholera.

Given these explanations, the best descriptions for \(X\) and \(Y\) are:
[tex]\[ \begin{aligned} X & = \text{Spherical} \\ Y & = \text{E. coli} \end{aligned} \][/tex]

Thus, the complete answer is:

[tex]\[ X = \text{Spherical} \][/tex]
[tex]\[ Y = \text{E. coli} \][/tex]

The correct choice from the options provided is:
[tex]\[ X = \text{Spherical}; Y = \text{E. coli} \][/tex]

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