To determine the descriptions for [tex]\(X\)[/tex] and [tex]\(Y\)[/tex], let's review the characteristics and associated diseases of the given bacteria forms:
1. Coccus:
- Form: Coccus
- Shape: [tex]\(X\)[/tex]
- Associated disease: Strep throat
The term "Coccus" refers to bacteria that are typically spherical in shape. Therefore, [tex]\(X\)[/tex] is best described as spherical.
2. Bacillus:
- Form: Bacillus
- Shape: Rod shaped
- Associated disease: [tex]\(Y\)[/tex]
Bacillus refers to bacteria that are rod-shaped. Considering common bacterial diseases caused by rod-shaped bacteria, one such bacterium is Bacillus pertussis, which causes whooping cough. Thus, [tex]\(Y\)[/tex] is best described as whooping cough.
3. Spirillum:
- Form: Spirillum
- Shape: Spiral
- Associated disease: Cholera
So, comparing these descriptions with the given options:
- [tex]\(X =\)[/tex] Spherical; [tex]\(Y =\)[/tex] E. coli
- [tex]\(X =\)[/tex] Comma shaped; [tex]\(Y =\)[/tex] Whooping cough
- [tex]\(X =\)[/tex] Oval shaped; [tex]\(Y = \text{S. aureus}\)[/tex]
- [tex]\(X =\)[/tex] Rod shaped; [tex]\(Y = \)[/tex] Pneumonia
The best match is:
- [tex]\(X =\)[/tex] Spherical
- [tex]\(Y =\)[/tex] Whooping cough
So, the correct answer is:
[tex]\( X = \text{Spherical}; Y = \text{Whooping cough}\)[/tex]
