NEET UG · Biology · Organisms and Populations

Organism and Its Environment: NEET previous year questions

3 questions in ten years of NEET, in 3 of 10 papers. Pattern: Most years. Here is how it is asked and which ideas come back.

Asked in 10 years: 3; about 0.3 per paper
Years asked: 3/10; last asked 2025
Chance of a question next paper: 37%; historical rate, how we compute it
Weighted estimate: 0.3; model; history: 0.3 a paper on average, typically 0–1

Key findings

01
Asked in 3 of 10 papers, 3 questions in all: #176 of 204 topics by ten-year total. It comes back every 3.5 years on average. Last asked in 2025.
02
100% of its questions since 2018 tested an idea never asked before; none repeated an idea from the year before.
03
No idea in this topic has been asked twice: every question tested something new.
04
NEET has asked 0 of the 5 ideas in this topic; 0 have never been asked, directly or indirectly.
05
Mostly asked as one-line MCQ (67%); 67% easy, 0% hard.

Questions per year

Up to 2023: 0.3; per paper
Since 2024: 0.3; 0.1
Usual gap: 3.5 yrs; between papers asking it
Swing: ±0.4; questions, year to year

How it is asked

Difficulty, format and skill

Across all 3 questions on Organism and Its Environment since 2017.

Difficulty

QUESTIONS

Easy2 · 67%
Medium1 · 33%
Hard0 · 0%

Format

One-line MCQ · 2 Q67%
Match the lists · 1 Q33%

Skill tested

Recall · 3 Q100%

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 0 of the 5 ideas in this topic. 0 have never been asked yet.

Asked directly0 · 0%
Touched inside another question5 · 100%
Never asked0 · 0%

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

1 · 33%33%1/10
- 2018 · Q114
  Niche is
  easyOne-line MCQNew idea
1 · 33%33%1/10
1 · 33%33%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

3 different ideas were tested; none came more than once.

Pioneers of Ecology1×
identify scientist for a discovery
One-line MCQ · 6% next
Physiological, Behavioural and Biochemical Adaptations1×
match list on adaptations and examples
Match the lists · 4% next
Habitat and Niche1×
definition recall
One-line MCQ · 4% next

Idea	Times	Format	Chance next	Foundation for
Pioneers of Ecologyidentify scientist for a discovery	1	One-line MCQRecall	6%	–
Physiological, Behavioural and Biochemical Adaptationsmatch list on adaptations and examples	1	Match the listsRecall	4%	–
Habitat and Nichedefinition recall	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

Organism and Its Environment questions, year by year

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

NEET 20251 question

Q133
Who is known as the father of Ecology in India?
Idea: Pioneers of Ecology
New ideaEasyOne-line MCQ

NEET 20211 question

Q199
Match List - I with List - II. List - I | List - II (a) Allen's Rule | (i) Kangaroo rat (b) Physiological adaptation | (ii) Desert lizard…
Idea: Physiological, Behavioural and Biochemical Adaptations
New ideaMediumMatch the lists

NEET 20181 question

Q114
Niche is
Idea: Habitat and Niche
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.