Question

Consider the following scenario and answer the question that follows. You are culturing three organisms, designated "A," "B" and "C," in three nutrient broths containing 1%,7%, and 15% saline (for a total of 9 tubes). Results are as follows: 1% 7% 15% А Growth No Growth No Growth B No Growth No Growth Growth C Growth Growth Growth Based on the data in the table, which of the three organisms do you think is halotolerant? Which is a halophile? Which is neither? Justify your response with supporting information. HTML Editoria BIVA - A - IX E 3 3 3 3 x x := 0 1 12pt Paragra

Answer 1

Here,organism C is halotolerant.

Organism B is a halophile.

Organism A is neither a halophile nor a halotolerant one.

Explanation-

An organism is said to be halo tolerant of it can survive or live in extreme salt concentrations,but doesn't need a salty environment to live.That is it can live in both salty and non-salty environments .They don't require salt to grow,but can grow under saline conditions.Here C can grow in 1%,7% and 15% saline containing nutrients broths means it's survival doesn't depend on salt concentrations of environment.C can grow in both low and high salinity areas.

Halophile means salt loving organism,that is it require high salt concentration to grow,they cannot survive in a low salt concentration environment.here,B cannot grow in 1% and 7%salt containing nutrients broths,but only grows in 15%saline containing nutrient brothmeans it need a high salt concentration to survive.

Organism A is neither halotolerant(because it cannot grow in 15% and 7% saline nutrient broth,but grows in 1%saline) nor halophile(doesn't require high salt concentration because it grows in 1% saline.)