264
MCQ Questions
35
Assertion-Reason
67
NEET 2025 Pattern
32
Previous Year Q
NCERT Mapping
Plant growth and development is from NCERT Class 11 Biology, Chapter 13, under the unit Plant Physiology. This chapter carries approximately 3% weightage in NEET, based on analysis of the last 10 years of question papers. MedicNEET covers this chapter with 366 questions — every question built from line-by-line NCERT analysis.
Topics in Plant growth and development
Plant growth regulators
Growth
Differentiation, Dedifferentiation and redifferentiation.
Development
Sample Questions — Plant growth and development
Try 5 free questions below. Get all 366 in the MedicNEET app.
MCQ
In plant tissue culture, what term applies to parenchyma cells induced to divide?
✅ Correct Answer: D
Parenchyma cells regain division capacity in vitro—this is dedifferentiation.
MCQ
A mango orchard is treated with ethylene during flowering while shaded leaves receive cytokinin spray. Which results follow?
1. Synchronous flowering occurs.
2. Photosynthesis is maintained by delayed senescence.
3. Auxin maintains apical dominance during flowering.
4. GA promotes fruit elongation post-fertilization.
✅ Correct Answer: D
Ethylene induces flowering; cytokinins delay senescence; auxin regulates shoot architecture; GA elongates fruits.
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MCQ
1.Arithmetic growth follows exponential increase
2. In arithmetic growth, one daughter cell continues dividing
3. Sigmoid curve includes lag, log and stationary phases
4. Geometric growth is a reversible process
✅ Correct Answer: B
Arithmetic involves only one dividing daughter cell; geometric is exponential; reversible growth is false.
Assertion-Reason
Assertion (A): Differentiated cells can change their developmental fate under certain conditions.
Reason (R): During dedifferentiation, cells lose their capacity to divide permanently.
✅ Correct Answer: C
NCERT confirms differentiated cells can change fate through dedifferentiation (Assertion true). However, NCERT states “The living differentiated cells, that by now have lost the capacity to divide can regain the capacity of division under certain conditions. This phenomenon is termed as dedifferentiation.” The Reason is false - dedifferentiation involves regaining division capacity, not losing it permanently.
NEET 2025 Pattern
Arrange the following stages in the developmental process of a higher plant cell in the correct sequence, starting from the active division phase:
1. Senescence
2. Cell Division
3. Maturation
4. Plasmatic Growth
5. Differentiation
6. Expansion (Elongation)
7. Death
✅ Correct Answer: D
The developmental process of a plant cell follows a precise and ordered succession of events, starting from cell division and progressing through growth, differentiation, and finally senescence and death.
According to Figure 13.8 in NCERT, the sequence of developmental processes in a plant cell is: Cell Division → Plasmatic growth → Expansion (Elongation) → Differentiation → Maturation → SENESCENCE → Death.
Therefore, the correct sequence is:
2. Cell Division
4. Plasmatic Growth
6. Expansion (Elongation)
5. Differentiation
3. Maturation
1. Senescence
7. Death
This corresponds to option D.
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Frequently Asked Questions
How many Plant growth and development questions does MedicNEET have?
MedicNEET has 366 questions for Plant growth and development, including 264 MCQs, 35 Assertion-Reason questions, and 67 NEET 2025-style long-form questions.
What is the NEET weightage of Plant growth and development?
Plant growth and development carries approximately 3% weightage in NEET, based on analysis of the last 10 years of papers. It falls under the Plant Physiology unit of Class 11 Biology.
Are Plant growth and development questions NCERT-based?
Yes, all MedicNEET Plant growth and development questions are built from line-by-line analysis of NCERT Class 11 textbook. Every question maps to specific NCERT pages and concepts.