NEET UG · Biology · Human Health and Disease
Immunity and Lymphoid Organs: NEET previous year questions
17 questions in ten years of NEET, in 9 of 10 papers. Pattern: Every year. Here is how it is asked and which ideas come back.
- Asked in 10 years
- 17
- about 1.6 per paper
- Years asked
- 9/10
- last asked 2026
- Weighted estimate
- 1.9
- model; history: 1.6 a paper on average, typically 1–3
Key findings
- 01
Asked in 9 of 10 papers, 17 questions in all: #21 of 204 topics by ten-year total. It comes back every 1.1 years on average.
- 02
47% of its questions since 2018 tested an idea never asked before; 2 repeated an idea from the year before.
- 03
The most repeated idea is Colostrum and IgA, asked 3 times (2019, 2024, 2026), usually as “identify component giving immunity”.
- 04
NEET has asked 0 of the 11 ideas in this topic; 0 have never been asked, directly or indirectly.
- 05
Mostly asked as one-line MCQ (65%); 59% easy, 0% hard, and up from 1.3 to 2.6 questions a paper since 2024.
Questions per year
- Up to 2023
- 1.3
- per paper
- Since 2024
- 2.6
- +1.3
- Usual gap
- 1.1 yrs
- between papers asking it
- Swing
- ±0.9
- questions, year to year
Recent framings
- identify immunoglobulin in secretion
- count correct statements on lymphoid organs
- definition recall
Revise first
Primary and Secondary Lymphoid Organs (2024 2025 2026); Colostrum and IgA (2019 2024 2026); Innate versus Acquired Immunity (2022 2025)
How it is asked
Difficulty, format and skill
Across all 17 questions on Immunity and Lymphoid Organs since 2017.
Difficulty
QUESTIONS- Easy10 · 59%
- Medium7 · 41%
- Hard0 · 0%
Format
SHARE- One-line MCQ · 11 Q65%
- Other · 3 Q18%
- Two statements · 2 Q12%
- Assertion–reason · 1 Q6%
Skill tested
SHARE- Recall · 15 Q88%
- Concept · 2 Q12%
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 0 of the 11 ideas in this topic. 0 have never been asked yet.
- Asked directly0 · 0%
- Touched inside another question11 · 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.
- Repeated3 · 18%
- 2024 · Q156Which of the following are Autoimmune disorders? A. Myasthenia gravis B. Rheumatoid arthritis C. Gout D. Muscular dystrophy E. Systemic…
mediumOther
- 2022 · Q157Given below are two statements : Statement I : Autoimmune disorder is a condition where body defense mechanism recognizes its own cells as…
easyTwo statements
- 2018 · Q176Which of the following is not an autoimmune disease ?
mediumOne-line MCQNew idea
- 2024 · Q156
- Repeated3 · 18%
- Repeated3 · 18%
- Repeated2 · 12%
- Repeated2 · 12%
- 1 · 6%
- 1 · 6%
- 1 · 6%
- 1 · 6%
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; 5 came more than once.
- Colostrum and IgA3×
identify component giving immunity
One-line MCQ · 11% next - Primary and Secondary Lymphoid Organs3×
count correct statements on lymphoid organs
Other · 11% next - Autoimmune Disorders3×
odd-one-out among autoimmune diseases
Other · 6% next - Innate versus Acquired Immunity2×
select incorrect statement on acquired immunity
One-line MCQ · 6% next - Cell-mediated Immunity and Graft Rejection2×
identify immune response for event
One-line MCQ · 4% next - Antibody Structure1×
identify wrong statement on antibody structure
One-line MCQ · 6% next - HIV and AIDS1×
identify host cell of a pathogen
One-line MCQ · 4% next - Active and Passive Immunity1×
identify wrong statement on immunity
One-line MCQ · 4% next - Mucosa-associated Lymphoid Tissue1×
numeric fact recall
One-line MCQ · 4% next
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
Immunity and Lymphoid Organs questions, year by year
The opening words of each question as it appeared in the official paper, with the idea it tested.
NEET 20262 questions
- Q165Which of the following are secondary lymphoid organs ? (a) Bone marrow (b) Tonsils (c) Spleen (d) Thymus Choose the correct answer from…
Idea: Primary and Secondary Lymphoid Organs
Asked last yearMediumOther - Q171Colostrum, secreted by mother during initial days of lactation, is abundant in
Idea: Colostrum and IgA
EasyOne-line MCQ
NEET 20253 questions
- Q143Identify the statement that is NOT correct.
Idea: Antibody Structure
New ideaMediumOne-line MCQ - Q156After maturation, in primary lymphoid organs, the lymphocytes migrate for interaction with antigens to secondary lymphoid organ(s) /…
Idea: Primary and Secondary Lymphoid Organs
Asked last yearMediumOther - Q167Which of the following type of immunity is present at the time of birth and is a non-specific type of defence in the human body?
Idea: Innate versus Acquired Immunity
EasyOne-line MCQ
NEET 20243 questions
- Q156Which of the following are Autoimmune disorders? A. Myasthenia gravis B. Rheumatoid arthritis C. Gout D. Muscular dystrophy E. Systemic…
Idea: Autoimmune Disorders
MediumOther - Q173Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R: Assertion A: Breast-feeding during…
Idea: Colostrum and IgA
EasyAssertion–reason - Q200Given below are two statements: Statement I: Bone marrow is the main lymphoid organ where all blood cells including lymphocytes are…
Idea: Primary and Secondary Lymphoid Organs
New ideaMediumTwo statements
NEET 20231 question
- Q170In which blood corpuscles, the HIV undergoes replication and produces progeny viruses?
Idea: HIV and AIDS
New ideaEasyOne-line MCQ
NEET 20222 questions
- Q157Given below are two statements : Statement I : Autoimmune disorder is a condition where body defense mechanism recognizes its own cells as…
Idea: Autoimmune Disorders
EasyTwo statements - Q188Select the incorrect statement with respect to acquired immunity.
Idea: Innate versus Acquired Immunity
New ideaEasyOne-line MCQ
NEET 20201 question
- Q45Identify the wrong statement with reference to immunity.
Idea: Active and Passive Immunity
New ideaEasyOne-line MCQ
NEET 20192 questions
- Q92Colostrum, the yellowish fluid, secreted by mother during the initial days of lactation is very essential to impart immunity to the…
Idea: Colostrum and IgA
New ideaEasyOne-line MCQ - Q162Which of the following immune responses is responsible for rejection of kidney graft ?
Idea: Cell-mediated Immunity and Graft Rejection
EasyOne-line MCQ
NEET 20181 question
- Q176Which of the following is not an autoimmune disease ?
Idea: Autoimmune Disorders
New ideaMediumOne-line MCQ
NEET 20172 questions
- Q110Transplantation of tissues/organs fails often due to non-acceptance by the patient's body. Which type of immune-response is responsible…
Idea: Cell-mediated Immunity and Graft Rejection
EasyOne-line MCQ - Q167MALT constitutes about ________ percent of the lymphoid tissue in human body.
Idea: Mucosa-associated Lymphoid Tissue
MediumOne-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.