NTA Abhyas NEET2020BotanyPlant - Growth and DevelopmentPractice
Arithmetic growth rate can be mathematically expressed as:
Options
- AL t = L 0 - rt
- BL 0 = L t + rt
- Crt = L t + L 0
- DL t = L 0 + rt
Correct answer
D. L t = L 0 + rt
Step-by-step solution
In arithmetic growth, following mitotic cell division, only one daughter cell continues to divide while the other differentiates and matures. The simplest expression of arithmetic growth is exemplified by a root elongating at a constant rate. Mathematically, it is expressed as: L t = L 0 + rt L t = length at time ‘t’ L 0 = length at time ‘zero’ r = growth rate / elongation per unit time.