An agar plate for counting colonies and maximizing statistical validity should ideally contain
A) 20 to 200 colonies.
B) 30 to 300 colonies.
C) 10 to 1000 colonies.
D) 10 to 100 colonies.

Question

Quizplus · Accepted Answer

A plate with less than 30 colonies may not be statistically significant, while a plate with more than 300 colonies may be difficult to count accurately and prone to overcrowding, leading to inaccurate results. Therefore, the ideal range is between 30 to 300 colonies, which is option B.

An Agar Plate for Counting Colonies and Maximizing Statistical Validity