A primary root grows 5cm to 19m in a week Calculate the growth rate and relative growth rate over - Biology - Plant Growth and Development

Question

A primary root grows 5cm to 19m in a week Calculate the growth
rate and relative growth rate over the period

Manik Mishra · Accepted Answer

Dear student
Please find your answer below to the asked query

Absolute growth rate
Lt = L0 + rt (i)
where Lt = length at time ‘t’ , L0 = length at
time ‘zero’ , r = growth rate / elongation per unit
time
Here, Lt = 19 cm
L0 = 5 cm
t = 1 week
Putting these values in equation (i)
r = (Lt - Lo) /T
r = 14 cm per week
Relative growth rate =
Change in length / initial length or absolute growth rate /
initial length

So 14/5 = 2 8 cm

Regards

A primary root grows 5cm to 19m in a week. Calculate the growth rate and relative growth rate over the period.