NEET UG · Biology · Plant Growth and Development
Photoperiodism: NEET previous year questions
2 questions in ten years of NEET, in 2 of 10 papers. Pattern: Gone quiet. Here is how it is asked and which ideas come back.
- Asked in 10 years
- 2
- about 0.2 per paper
- Years asked
- 2/10
- last asked 2021
- Weighted estimate
- 0.1
- model; history: 0.2 a paper on average, typically 0–1
Key findings
- 01
Asked in 2 of 10 papers, 2 questions in all: #189 of 204 topics by ten-year total. It comes back every 2.0 years on average. Last asked in 2021.
- 02
50% 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 Site of Photoperiodic Perception, asked 2 times (2019, 2021), usually as “identify site of perception”.
- 04
NEET has asked 1 of the 84 ideas in this topic; 81 have never been asked, directly or indirectly.
- 05
Mostly asked as one-line MCQ (100%); 100% easy, 0% hard.
Questions per year
- Up to 2023
- 0.3
- per paper
- Since 2024
- 0.0
- -0.3
- Usual gap
- 2.0 yrs
- between papers asking it
- Swing
- ±0.4
- questions, year to year
How it is asked
Difficulty, format and skill
Across all 2 questions on Photoperiodism since 2017.
Difficulty
QUESTIONS- Easy2 · 100%
- Medium0 · 0%
- Hard0 · 0%
Format
SHARE- One-line MCQ · 2 Q100%
Skill tested
SHARE- Recall · 2 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.
- Idea asked for the first time
- Idea asked in an earlier paper
Coverage of the topic
NEET has asked 1 of the 84 ideas in this topic. 81 have never been asked yet.
- Asked directly1 · 1%
- Touched inside another question2 · 2%
- Never asked81 · 96%
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.
- Repeated2 · 100%
- 2021 · Q131The site of perception of light in plants during photoperiodism is :
easyOne-line MCQ
- 2019 · Q143What is the site of perception of photoperiod necessary for induction of flowering in plants ?
easyOne-line MCQNew idea
- 2021 · Q131
Squares are the ten papers, 2017 to 2026; darker means more questions. Share is of the level above.
Ideas
Every idea inside this topic
1 different ideas were tested; 1 came more than once. Site of Photoperiodic Perception is the foundation for 15 other ideas in the syllabus.
- Site of Photoperiodic Perception2×
identify site of perception
One-line MCQ · 6% next · foundation for 15
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
Photoperiodism questions, year by year
The opening words of each question as it appeared in the official paper, with the idea it tested.
NEET 20211 question
- Q131The site of perception of light in plants during photoperiodism is :
Idea: Site of Photoperiodic Perception
EasyOne-line MCQ
NEET 20191 question
- Q143What is the site of perception of photoperiod necessary for induction of flowering in plants ?
Idea: Site of Photoperiodic Perception
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.