Choose the correct series of bacteria that cause Tetanus, Diphtheria, Crown gall and Blight, respectively
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- Clostridium, Corynebacterium, Agrobacterium, Xanthomonas
- Vibrio, Diplococcus, Xanthomonas, Clostridium
- Xanthomonas, Agrobacterium, Corynebacterium, Clostridium
- Corynebacterium, Agrobacterium, Xanthomonas, Clostridium
The Correct Option is A
Solution and Explanation
- Tetanus: Caused by Clostridium tetani, a Gram-positive, anaerobic, spore-forming bacterium. It produces tetanospasmin, a potent neurotoxin that causes muscle rigidity and spasms.
- Diphtheria: Caused by Corynebacterium diphtheriae, a Gram-positive bacterium. It produces diphtheria toxin that damages tissues, primarily affecting the respiratory tract.
- Crown gall: Caused by Agrobacterium tumefaciens, a Gram-negative soil bacterium. It infects plants causing tumor-like growths (galls) at the crown region by transferring part of its DNA (T-DNA) into the host plant cells.
- Blight: Caused by Xanthomonas, a genus of Gram-negative bacteria. They are plant pathogens causing leaf spots, blights, and other plant diseases affecting many crops.
Top Questions on Microbiology
Match the LIST-I with LIST-II.
\[ \begin{array}{|l|l|} \hline \textbf{LIST I (Pathogen)} & \textbf{LIST II (Detection methods)} \\ \hline A. \ \text{Legionella} & I. \ \text{Enzyme-linked immunosorbent assay (ELISA) or EIA for detection of P-24} \\ B. \ \text{HIV} & II. \ \text{Cartridge based nucleic acid amplification test (CBNAAT) Gene Xpert} \\ C. \ \text{Mycobacterium} & III. \ \text{Urinary antigen test} \\ D. \ \text{Salmonella typhi} & IV. \ \text{Widal test for antibody against both O and H antigens} \\ \hline \end{array} \]Match the LIST-I (Microbial pathogen) with LIST-II (Clinical syndromes):
\[ \begin{array}{|l|l|} \hline \textbf{LIST I (Microbial pathogen)} & \textbf{LIST II (Clinical syndromes)} \\ \hline A. \ \textbf{Haemophilus aegyptius} & I. \ Upper respiratory tract infection \\ B. \ \textbf{Haemophilus influenzae} & II. \ Pneumonia \\ C. \ \textbf{Haemophilus ducreyi} & III. \ Conjunctivitis \\ D. \ \textbf{Haemophilus haemolyticus} & IV. \ Chancroid (STD) \\ \hline \end{array} \]
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