Bacteria with tuft of flagellae at one end are called-
## Core Concept
The question tests knowledge of bacterial morphology, specifically the arrangement of flagellae on bacterial cells. Flagellae are whip-like structures that provide motility to bacteria. Different arrangements of flagellae are characteristic of various bacterial species.
## Why the Correct Answer is Right
Bacteria with a tuft of flagellae at one end are referred to as **peritrichous** but more specifically for the tuft at one end, the term **lophotrichous** is used. Lophotrichous bacteria have a tuft of flagellae at one or both ends of the cell. This unique arrangement is a distinguishing feature for certain bacterial species.
## Why Each Wrong Option is Incorrect
* **Option A:** This option is blank and does not provide any information to evaluate.
* **Option B:** This option is also blank and cannot be assessed.
* **Option C:** Similarly, this option does not offer any details for consideration.
* **Option D:** This option is blank as well, making it impossible to evaluate.
## Clinical Pearl / High-Yield Fact
A key point to remember is that the arrangement of flagellae can be a critical clue in identifying bacterial species. For instance, **peritrichous** bacteria have flagellae all around the cell, **monotrichous** have a single flagellum at one end, and **lophotrichous** have a tuft of flagellae at one end.
## Correct Answer: D. Lophotrichous