NEET 2026
- Exam
- NEET
- Year
- 2026
- Subject
- Biology
- Chapter
- Chapter
NEET 2026 · Biology · Chapter
The given figure represents the typical growth curve of a plant...
The given figure represents the typical growth curve of a plant organ growing in a natural environment. Which of the following statements correctly identifies the characteristic of the phase labelled 'Q'?
Options
- AIt is the lag phase where the rate of growth is initially very slow.
- BIt is the stationary phase where growth slows down due to a limited nutrient supply.
- CIt is the exponential phase where both progeny cells following mitotic division retain the ability to divide.
- DIt represents a phase of arithmetic growth where only one daughter cell continues to divide.
Correct answer
C. It is the exponential phase where both progeny cells following mitotic division retain the ability to divide.
Step-by-step solution
The given figure represents a typical sigmoid growth curve, which is characteristic of living organisms growing in a natural environment.
The curve is divided into three main phases:
1. Phase P (Lag phase): The initial phase where the rate of growth is very slow.
2. Phase Q (Log or Exponential phase): The phase of maximum and rapid growth. During this phase, growth is geometric, meaning both progeny cells formed after mitotic cell division retain the ability to divide and continue to do so.
3. Phase R (Stationary phase): The final phase where growth slows down and eventually stops due to the depletion of nutrients and limited resources.
Therefore, phase 'Q' represents the exponential phase where both daughter cells continue to divide.
Answer: It is the exponential phase where both progeny cells following mitotic division retain the ability to divide.
The curve is divided into three main phases:
1. Phase P (Lag phase): The initial phase where the rate of growth is very slow.
2. Phase Q (Log or Exponential phase): The phase of maximum and rapid growth. During this phase, growth is geometric, meaning both progeny cells formed after mitotic cell division retain the ability to divide and continue to do so.
3. Phase R (Stationary phase): The final phase where growth slows down and eventually stops due to the depletion of nutrients and limited resources.
Therefore, phase 'Q' represents the exponential phase where both daughter cells continue to divide.
Answer: It is the exponential phase where both progeny cells following mitotic division retain the ability to divide.