NEET UG · Biology · Biotechnology and its Applications

Transgenic Plants: NEET previous year questions

12 questions in ten years of NEET, in 7 of 10 papers. Pattern: Every year. Here is how it is asked and which ideas come back.

Asked in 10 years: 12; about 1.2 per paper
Years asked: 7/10; last asked 2026
Chance of a question next paper: 64%; historical rate, how we compute it
Weighted estimate: 1.1; model; history: 1.2 a paper on average, typically 0–2

Key findings

01
Asked in 7 of 10 papers, 12 questions in all: #58 of 204 topics by ten-year total. It comes back every 1.3 years on average.
02
92% of its questions since 2018 tested an idea never asked before; none repeated an idea from the year before.
03
The most repeated idea is Alkaline pH Activation, asked 2 times (2019, 2026), usually as “identify trigger of protoxin activation”.
04
NEET has asked 7 of the 88 ideas in this topic; 75 have never been asked, directly or indirectly.
05
Mostly asked as one-line MCQ (75%); 75% easy, 0% hard.

Questions per year

Up to 2023: 1.1; per paper
Since 2024: 1.3; 0.1
Usual gap: 1.3 yrs; between papers asking it
Swing: ±1.0; questions, year to year

Revise first

Alkaline pH Activation (2019 2026); Specific Cry Gene Targets (2024); RNAi Silencing Mechanism (2025)

How it is asked

Difficulty, format and skill

Across all 12 questions on Transgenic Plants since 2017.

Difficulty

QUESTIONS

Easy9 · 75%
Medium3 · 25%
Hard0 · 0%

Format

One-line MCQ · 9 Q75%
Match the lists · 2 Q17%
Two statements · 1 Q8%

Skill tested

Recall · 10 Q83%
Concept · 2 Q17%

Repeats

New idea, or one asked before?

Each column is a paper. Blue questions tested an idea NEET had not asked before; navy ones went back to an idea from an earlier paper. 2017 is the first paper, so everything in it counts as new.

’17’18’19’20’21’22’23’24’25’26

Idea asked for the first time
Idea asked in an earlier paper

Coverage of the topic

NEET has asked 7 of the 88 ideas in this topic. 75 have never been asked yet.

Asked directly7 · 8%
Touched inside another question6 · 7%
Never asked75 · 85%

Ideas come from Lumi’s syllabus map of NCERT. A never-asked idea is not a safe skip: most new questions come from exactly these.

Drill down

Idea, year, question

Every idea NEET tested in this topic, with its ten papers. Open one to read the questions.

ideaAskedShareYears’17’18’19’20’21’22’23’24’25’26

Repeated2 · 17%17%2/10
- 2026 · Q137
  The inactive form of Bt toxin is converted to the active form in the insect gut __________.
  easyOne-line MCQ
- 2019 · Q174
  What triggers activation of protoxin to active Bt toxin of Bacillus thuringiensis in boll worm ?
  easyOne-line MCQNew idea
2 · 17%17%1/102
2 · 17%17%1/102
1 · 8%8%1/10
1 · 8%8%1/10
1 · 8%8%1/10
1 · 8%8%1/10
1 · 8%8%1/10
1 · 8%8%1/10

Squares are the ten papers, 2017 to 2026; darker means more questions. Share is of the level above.

Ideas

Every idea inside this topic

9 different ideas were tested; 3 came more than once. Bt Toxin Source is the foundation for 31 other ideas in the syllabus.

Alkaline pH Activation2×
identify trigger of protoxin activation
One-line MCQ · 6% next · foundation for 18
Specific Cry Gene Targets2×
statement i/ii on bt toxin
Match the lists · 6% next · foundation for 6
Biopiracy and Patents2×
definition recall
One-line MCQ · 4% next
RNAi Silencing Mechanism1×
definition recall
One-line MCQ · 6% next · foundation for 10
Transposon Definition1×
identify use of a biotech tool
One-line MCQ · 4% next · foundation for 1
Bt Toxin Source1×
match list on biotechnology applications
Match the lists · 4% next · foundation for 31
Transgenic Plants as Biopesticides1×
definition recall of bt cotton
One-line MCQ · 4% next
Golden Rice Vitamin A Enrichment1×
true statement selection on transgenic crops
One-line MCQ · 4% next
GEAC and Biosafety Regulation1×
identify regulatory body
One-line MCQ · 4% next

Idea	Times	Format	Chance next	Foundation for
Alkaline pH Activationidentify trigger of protoxin activation	2	One-line MCQRecall	6%	18 ideas
Specific Cry Gene Targetsstatement i/ii on bt toxin	2	Match the listsConcept	6%	6 ideas
Biopiracy and Patentsdefinition recall	2	One-line MCQRecall	4%	–
RNAi Silencing Mechanismdefinition recall	1	One-line MCQConcept	6%	10 ideas
Transposon Definitionidentify use of a biotech tool	1	One-line MCQRecall	4%	1 ideas
Bt Toxin Sourcematch list on biotechnology applications	1	Match the listsRecall	4%	31 ideas
Transgenic Plants as Biopesticidesdefinition recall of bt cotton	1	One-line MCQRecall	4%	–
Golden Rice Vitamin A Enrichmenttrue statement selection on transgenic crops	1	One-line MCQRecall	4%	–
GEAC and Biosafety Regulationidentify regulatory body	1	One-line MCQRecall	4%	–

Chance next is the historical rate at which an idea with this record came back in the following paper. It is low for every idea, which is why learning the topic beats memorising past questions. All repeated ideas

Every question

Transgenic Plants questions, year by year

The opening words of each question as it appeared in the official paper, with the idea it tested.

NEET 20261 question

Q137
The inactive form of Bt toxin is converted to the active form in the insect gut __________.
Idea: Alkaline pH Activation
EasyOne-line MCQ

NEET 20251 question

Q144
Silencing of specific mRNA is possible via RNAi because of -
Idea: RNAi Silencing Mechanism
New ideaEasyOne-line MCQ

NEET 20242 questions

Q132
Given below are two statements: Statement I : Bt toxins are insect group specific and coded by a gene $cry$ IAc. Statement II : Bt toxin…
Idea: Specific Cry Gene Targets
New ideaMediumTwo statements
Q183
Match List I with List II List-I | List-II A. α-1 antitrypsin | I. Cotton bollworm B. Cry IAb | II. ADA deficiency C. Cry IAc | III.…
Idea: Specific Cry Gene Targets
New ideaMediumMatch the lists

NEET 20221 question

Q147
Transposons can be used during which one of the following ?
Idea: Transposon Definition
New ideaMediumOne-line MCQ

NEET 20202 questions

Q43
Bt cotton variety that was developed by the introduction of toxin gene of Bacillus thuringiensis (Bt) is resistant to :
Idea: Transgenic Plants as Biopesticides
New ideaEasyOne-line MCQ
Q55
Match the following columns and select the correct option. Column - I | Column - II (a) Bt cotton | (i) Gene therapy (b) Adenosine…
Idea: Bt Toxin Source
New ideaEasyMatch the lists

NEET 20192 questions

Q152
Which of the following is true for Golden rice ?
Idea: Golden Rice Vitamin A Enrichment
New ideaEasyOne-line MCQ
Q174
What triggers activation of protoxin to active Bt toxin of Bacillus thuringiensis in boll worm ?
Idea: Alkaline pH Activation
New ideaEasyOne-line MCQ

NEET 20183 questions

Q99
Use of bioresources by multinational companies and organisations without authorisation from the concerned country and its people is called
Idea: Biopiracy and Patents
New ideaEasyOne-line MCQ
Q100
In India, the organisation responsible for assessing the safety of introducing genetically modified organisms for public use is
Idea: GEAC and Biosafety Regulation
New ideaEasyOne-line MCQ
Q103
A 'new' variety of rice was patented by a foreign company, though such varieties have been present in India for a long time. This is…
Idea: Biopiracy and Patents
New ideaEasyOne-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.