Organisms-And-Population Question 345
Question: You are growing a bacterial population in a laboratory flask with a flow-through system that continuously replaces old culture medium with fresh medium without removing any bacteria. Which of the following graphs best predicts the growth of this population over time?
Options:
A) A
B) D
C) B
D) C
Show Answer
Answer:
Correct Answer: D
Solution:
[d] The logistic model of population growth produces a sigmoid (S-shaped) growth curve when the population size (N) is plotted over time.
New individuals are added to the population most rapidly at intermediate population sizes when there is not only a breeding population of substantial size but also lots of available space and other resources in the environment.
The population growth rate slows dramatically as the population size approaches carrying capacity (K).
BETA
