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A callus of 5 g dry weight was inoculated onsemi-solid medium for growth. The dry weight of the callus was found to increase by 1.5 fold after 10 days of inoculation. The growth index of the culture is ______
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- 2.5
- 0.25
- 0.5
- 25
Correct Option: C
Given, Initial dry weight = 5 g
After inoculation for 10 days, dry weight = 1.5 × 5 = 7.5 g
Therefore Growth index of the callus = (Difference or change in weight) / (Originalweight) = (7.5 – 5) / 5 = 0.5
