NEET UG · Biology · Class 11
Plant Growth and Development: NEET previous year questions
23 questions in ten years of NEET, asked in 9 of 10 years. Here is what this chapter tests and how.
- Asked in 10 years
- 23
- 9 of 10 papers
- 10-year average
- 2.2
- a paper · 2.6 since 2024 +0.6
- Typical range
- 1–3
- questions a paper; fewest 0, most 3
- Weighted estimate
- 2.6
- model, recent papers count more · about 10 marks
- Typical range (fact)
- 10-year average (fact)
- Weighted estimate (model)
Typical range: questions per paper in the middle eight of the ten papers, leaving out the single highest and lowest year (about the 10th to 90th percentile), each paper scaled to 180 questions. The ten-year average and the range are historical fact. The weighted estimate is a model: each paper's share, with recent papers counting more (half-life three years), and dropped syllabus removed. It is a guide to effort, not a forecast.
What to do
How to spend time on Plant Growth and Development
Priority
Among the chapters that took NEET from half to 80% of its questions. How bands are set
- Past questions
- 23in 9 of 10 papers
- Study plan gives it
- 14 hover 12 months; 11 h over 6
Ideas asked most often
- Dedifferentiation and Redifferentiation3×
- 2,4-D as a Dicot Herbicide2×
- Gibberellins in Sugarcane Production2×
- Site of Photoperiodic Perception2×
141 of the 161 ideas in Lumi’s map of this chapter have not been asked or touched in ten years. New questions often come from ideas like these, so learn the whole chapter, not just the list above.
Questions per year
Kind of question
SHARE OF 10 YEARS- Recall87%
- Concept9%
- Calculation4%
Most common asks: identify hormone for an effect (7); identify phase of growth curve (1); definition recall (1).
Profile
This chapter in numbers
Where it ranks, how steady it is, and what it costs to study.
- Rank, all NEET chapters
- #26
- of 80 by weighted estimate
- Rank in Biology
- #19
- of 32 chapters
- Share of the paper
- 1.2%
- ten-year average
- Busiest year
- 2020
- 3 questions
- Year to year
- Some swing
- varies by about 0.9 questions
- Long-run direction
- +0.21
- questions per paper, per year
- Easy questions
- 87%
- 3% of ideas rated hard
- With a figure
- 0%
- graph, diagram or structure
- Botany / Zoology
- 23 / 0
- questions by section
- Study time
- 14 h
- 11 h on a 6-month plan
- Marks per study hour
- 0.71
- #6 of 80 chapters
- Foundation for others
- 6%
- of its ideas are used in other chapters
Difficulty, year by year
Each question rated easy, medium or hard against NCERT.
- 20171
- 2018
- 20192
- 20203
- 20213
- 20223
- 20233
- 20243
- 20252
- 20263
- Easy
- Medium
- Hard
What it asks you to do
SHARE OF QUESTIONS- Recall87%
- Concept9%
- Calculation4%
Coverage
How much of the chapter NEET has used
We split the chapter into 161 ideas. In ten years NEET built a question around 14 of them. Most of the chapter has never been asked, which is why learning it whole beats memorising past questions.
- Asked as the main idea
- 14
- Touched on in a question
- 6
- Never asked
- 141
Topics
What repeats, topic by topic
Questions per topic in each year's paper. Topics that come every year are worth learning first.
- Plant Growth Regulators · Every year15112122222
- Plant Growth and Differentiation · Every year6111111
- Photoperiodism · Gone quiet211
| Topic | 2017 | ’18 | 2019 | ’20 | 2021 | ’22 | 2023 | ’24 | 2025 | ’26 | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Plant Growth RegulatorsEvery year | 1 | · | 1 | 2 | 1 | 2 | 2 | 2 | 2 | 2 | 15 |
| Plant Growth and DifferentiationEvery year | · | · | · | 1 | 1 | 1 | 1 | 1 | · | 1 | 6 |
| PhotoperiodismGone quiet | · | · | 1 | · | 1 | · | · | · | · | · | 2 |
Drill down
Topic, idea, question
Open a topic to see every idea NEET tested inside it, then open an idea to read the questions. Each row shows its ten papers.
Ideas
The exact ideas NEET has asked
Inside the topics, 18 different ideas were tested. These came more than once, or are new since 2024.
- Dedifferentiation and Redifferentiation3×
name the phenomenon in tissue culture
- 2,4-D as a Dicot HerbicideNew2×
reason for plant hormone application
- Gibberellins in Sugarcane Production2×
identify growth regulator for agricultural use
- Site of Photoperiodic Perception2×
identify site of perception
- Gibberellins and BoltingNew1×
identify hormone for an effect
- Arithmetic and Geometric GrowthNew1×
numerical
- Cytokinins and SenescenceNew1×
identify hormone for an effect
- Auxin-Induced ParthenocarpyNew1×
count correct statements on plant growth
Every question
Plant Growth and Development questions, year by year
The opening words of each question as it appeared in the official paper.
NEET 20263 questions
- Q110Which of the following plant growth regulators is used as herbicide?One-line MCQ
- Q127Which of the following plant growth regulators promotes internode elongation prior to flowering in cabbage?One-line MCQ
- Q133Length of the stem at time 0 is 20 cm. The arithmetic growth rate is 30 cm per day. What is the length of the stem at the end of the 7th…Numerical
NEET 20252 questions
- Q108Which one of the following phytohormones promotes nutrient mobilization which helps in the delay of leaf senescence in plants?One-line MCQ
- Q173Read the following statements on plant growth and development. A. Parthenocarpy can be induced by auxins. B. Plant growth regulators can…Other
NEET 20243 questions
- Q104Formation of interfascicular cambium from fully developed parenchyma cells is an example forOne-line MCQ
- Q130Auxin is used by gardeners to prepare weed-free lawns. But no damage is caused to grass as auxinOne-line MCQ
- Q138Spraying sugarcane crop with which of the following plant growth regulators, increases the length of stem, thus, increasing the yield?One-line MCQ
NEET 20233 questions
- Q110Which hormone promotes internode/petiole elongation in deep water rice?One-line MCQ
- Q119Spraying of which of the following phytohormone on juvenile conifers helps in hastening the maturity period, that leads to early seed…One-line MCQ
- Q124In tissue culture experiments, leaf mesophyll cells are put in a culture medium to form callus. This phenomenon may be called as :One-line MCQ
NEET 20223 questions
- Q105Which one of the following plants does not show plasticity ?One-line MCQ
- Q115Production of Cucumber has increased manifold in recent years. Application of which of the following phytohormones has resulted in this…One-line MCQ
- Q132The gaseous plant growth regulator is used in plants to :One-line MCQ
NEET 20213 questions
- Q104The plant hormone used to destroy weeds in a field is :One-line MCQ
- Q126Plants follow different pathways in response to environment or phases of life to form different kinds of structures. This ability is…One-line MCQ
- Q131The site of perception of light in plants during photoperiodism is :One-line MCQ
NEET 20203 questions
- Q2The process of growth is maximum during :One-line MCQ
- Q64Name the plant growth regulator which upon spraying on sugarcane crop, increases the length of stem, thus increasing the yield of…One-line MCQ
- Q66Which of the following is not an inhibitory substance governing seed dormancy ?One-line MCQ
NEET 20192 questions
- Q143What is the site of perception of photoperiod necessary for induction of flowering in plants ?One-line MCQ
- Q167It takes very long time for pineapple plants to produce flowers. Which combination of hormones can be applied to artificially induce…One-line MCQ
NEET 20171 question
- Q158Fruit and leaf drop at early stages can be prevented by the application of :One-line MCQ
Questions from the official NEET UG papers published by NTA (CBSE before 2019). Topic and idea tags, counts and notes are Lumi’s.