Question

In Figure 6.1, which line best depicts a psychrotroph incubated at 0°C?

Answer 1

The line depicting a psychrotroph incubated at 0°C would show slow growth since 0°C is at the lower end of their growth range but not at their optimum temperature. Psychrotrophs grow best between 4°C and 25°C.

Step-by-step explanation:

The question "In Figure 6.1, which line best depicts a psychrotroph incubated at 0°C?" refers to the ability of psychrotrophic microorganisms to grow at cooler temperatures. Although psychrotrophs can grow at temperatures as low as 0°C, their optimal growth range is typically between 4°C and 25°C. Without seeing Figure 6.1, one can infer that the best depiction of a psychrotroph's growth at 0°C would be a line indicating a slow but possible growth, since 0°C is at the extreme lower end of their growth range but not their optimum. Growth at this temperature would be much slower than at their optimal temperature, which is closer to 20°C. Psychrotrophs can be compared to psychrophiles, which prefer even colder temperatures typically ranging from 0°C to 15°C and are not likely to survive above 20°C.