Question

Which of the following cocci is/are examples of division in one plane?

• A. ( Staphylococci )
• B. ( Streptococci )
• C. ( Micrococci )
• D. ( Diplococci )

Hint:

Recognizing the patterns of division in cocci can aid significantly in initial diagnostics and understanding the potential virulence and epidemiology of the bacteria.

Answer 1

The Correct Option is B

Bacterial cells can divide in various planes relative to their axes, influencing the arrangement of the resulting cells. This arrangement can often help in identifying the type of bacteria. 
Analysis of Each Option: (A) Staphylococci: Incorrect. These bacteria divide in multiple planes, resulting in clusters that resemble a bunch of grapes. 
(B) Streptococci: Correct. Streptococci divide along a single axis, leading to a chain-like arrangement, indicative of division in one plane. 
(C) Micrococci: Incorrect. Micrococci typically divide in more than one plane, usually forming tetrads or irregular clusters. 
(D) Diplococci: Correct. Diplococci divide in one plane and remain attached in pairs after division. Conclusion:
Explanation: Streptococci and diplococci are characterized by their division in one plane, a key morphological trait used in microbiological classification and identification. This type of division leads to predictable cellular arrangements that are crucial for identification in clinical and environmental microbiology.