NEET UG · Biology · Sexual Reproduction in Flowering Plants

Double Fertilization: NEET previous year questions

7 questions in ten years of NEET, in 5 of 10 papers. Pattern: Every year. Here is how it is asked and which ideas come back.

Asked in 10 years: 7; about 0.7 per paper
Years asked: 5/10; last asked 2026
Chance of a question next paper: 50%; historical rate, how we compute it
Weighted estimate: 0.5; model; history: 0.7 a paper on average, typically 0–2

Key findings

01
Asked in 5 of 10 papers, 7 questions in all: #123 of 204 topics by ten-year total. It comes back every 2.2 years on average.
02
40% of its questions since 2018 tested an idea never asked before; 1 repeated an idea from the year before.
03
The most repeated idea is Ploidy Level Calculation, asked 2 times (2023, 2026), usually as “identify structures by ploidy”.
04
NEET has asked 4 of the 86 ideas in this topic; 78 have never been asked, directly or indirectly.
05
Mostly asked as one-line MCQ (100%); 86% easy, 0% hard, and down from 0.8 to 0.3 questions a paper since 2024.

Questions per year

Up to 2023: 0.8; per paper
Since 2024: 0.3; -0.5
Usual gap: 2.2 yrs; between papers asking it
Swing: ±0.8; questions, year to year

How it is asked

Difficulty, format and skill

Across all 7 questions on Double Fertilization since 2017.

Difficulty

QUESTIONS

Easy6 · 86%
Medium1 · 14%
Hard0 · 0%

Format

One-line MCQ · 7 Q100%

Skill tested

Recall · 4 Q57%
Calculation · 1 Q14%
Application · 1 Q14%
Concept · 1 Q14%

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 4 of the 86 ideas in this topic. 78 have never been asked yet.

Asked directly4 · 5%
Touched inside another question4 · 5%
Never asked78 · 91%

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 · 29%29%2/10
- 2018 · Q92
  Double fertilization is
  easyOne-line MCQAsked the year before
- 2017 · Q91
  Double fertilization in exhibited by
  easyOne-line MCQNew idea
Repeated2 · 29%29%2/10
Repeated2 · 29%29%2/10
1 · 14%14%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

4 different ideas were tested; 3 came more than once. Double Fertilization Concept is the foundation for 17 other ideas in the syllabus.

Ploidy Level Calculation2×
identify structures by ploidy
One-line MCQ · 6% next · foundation for 2
Post-Fertilization Changes2×
incorrect statement selection on post-fertilization changes
One-line MCQ · 4% next · foundation for 3
Double Fertilization Concept2×
definition recall
One-line MCQ · 4% next · foundation for 17
Discharge of Male Gametes1×
identify fate of male gametes
One-line MCQ · 4% next

Idea	Times	Format	Chance next	Foundation for
Ploidy Level Calculationidentify structures by ploidy	2	One-line MCQApplication	6%	2 ideas
Post-Fertilization Changesincorrect statement selection on post-fertilization changes	2	One-line MCQRecall	4%	3 ideas
Double Fertilization Conceptdefinition recall	2	One-line MCQRecall	4%	17 ideas
Discharge of Male Gametesidentify fate of male gametes	1	One-line MCQConcept	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

Double Fertilization 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

Q156
If the diploid chromosome number of typical angiosperm is 36, what would be the chromosome number in its endosperm ?
Idea: Ploidy Level Calculation
EasyOne-line MCQ

NEET 20231 question

Q122
In angiosperm, the haploid, diploid and triploid structures of a fertilized embryo sac sequentially are :
Idea: Ploidy Level Calculation
New ideaMediumOne-line MCQ

NEET 20192 questions

Q111
Which one of the following statements regarding post-fertilization development in flowering plants is incorrect ?
Idea: Post-Fertilization Changes
EasyOne-line MCQ
Q142
What is the fate of the male gametes discharged in the synergid ?
Idea: Discharge of Male Gametes
New ideaEasyOne-line MCQ

NEET 20181 question

Q92
Double fertilization is
Idea: Double Fertilization Concept
Asked last yearEasyOne-line MCQ

NEET 20172 questions

Q91
Double fertilization in exhibited by
Idea: Double Fertilization Concept
EasyOne-line MCQ
Q165
The morphological nature of the edible part of coconut is :
Idea: Post-Fertilization Changes
EasyOne-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.