To determine the best descriptions for [tex]\(X\)[/tex] and [tex]\(Y\)[/tex] given the provided bacteria types and associated diseases, let's analyze each description step by step.
1. Coccus Form:
The Coccus form of bacteria is commonly known to be spherical in shape. This characteristic helps in identifying [tex]\(X\)[/tex]. So, [tex]\(X\)[/tex] is typically described as spherical.
2. Bacillus Form:
For Bacillus bacteria, they are rod-shaped, and some are associated with various diseases. One of the notable bacteria in the Bacillus form is associated with the disease caused by E. coli.
Reviewing the options:
1. [tex]\(X = \text{Spherical}; Y = \text{E. coli}\)[/tex]
- [tex]\(X\)[/tex] as spherical corresponds to the Coccus form.
- [tex]\(Y\)[/tex] as \text{E. coli} corresponds to some Bacillus bacteria.
- This option is consistent with the descriptions provided in the table.
2. [tex]\(X = \text{Comma shaped}; Y = \text{Whooping cough}\)[/tex]
- [tex]\(X\)[/tex] being comma shaped does not match the Coccus form, which is spherical.
- [tex]\(Y\)[/tex] as whooping cough is not typically caused by Bacillus bacteria.
3. [tex]\(X = \text{Oval shaped}; Y = \text{S. aureus}\)[/tex]
- [tex]\(X\)[/tex] being oval-shaped does not match the Coccus form, which is spherical.
- [tex]\(Y\)[/tex] as \text{S. aureus} is not associated with Bacillus bacteria, as it is actually a species of Staphylococcus.
4. [tex]\(X = \text{Rod shaped}; Y = \text{Pneumonia}\)[/tex]
- [tex]\(X\)[/tex] being rod-shaped does not match the Coccus form, which is spherical.
- [tex]\(Y\)[/tex] as pneumonia is not specifically indicative of the Bacillus form related to \text{E. coli}.
Thus, the best match for the descriptions of [tex]\(X\)[/tex] and [tex]\(Y\)[/tex] is:
[tex]\[ X = \text{Spherical}; Y = \text{E. coli} \][/tex]
This accurately describes the Coccus form as spherical and its association with the disease caused by \text{E. coli} in the Bacillus form.
