__________ is gram-positive?
Correct answer: D. Corynebacterium
- A. Xanthomonas
- B. Erwinia
- C. Pseudomonas
- D. Corynebacterium
Explanation
Corynebacterium is a Gram-positive phytopathogenic bacterium, whereas Xanthomonas, Pseudomonas and Erwinia are generally Gram-negative. The bacterial cell-wall difference is the key distinction.
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