2018 source guide · Biology

NEET 2018 Biology Questions

Use this page to connect the official 2018 paper with current Biology practice. NeetVellum does not claim a chapter appeared in that paper until the official question and final key have been mapped.

Practice 3486 verified questions →Check official NTA archive ↗

Original practice preview

These are current-syllabus NeetVellum questions, shown separately from historical-paper provenance.

Example 1 · difficulty 2/5

A man with blood group AB marries a woman with blood group O. According to the multiple allelism concept of the ABO system, what are the possible blood groups of their biological children?

A. Only group AB
B. Only group O
C. Group A or group B in equal proportions
D. Any one of the four groups A, B, AB or O

Example 2 · difficulty 3/5

A man suffering from haemophilia, an X-linked recessive disorder, marries a woman who is homozygously normal for the gene concerned. Which one of the following statements about their offspring is correct?

A. All of their sons will be haemophilic.
B. All of their daughters will be carriers.
C. Half of their daughters will be haemophilic.
D. Half of their sons will be haemophilic.

Example 3 · difficulty 1/5

A female patient shows short stature, rudimentary ovaries, absence of secondary sexual characters and sterility. Karyotyping reveals a total chromosome number of 45. Which chromosomal composition corresponds to this diagnosis?

A. 44 autosomes plus a single X chromosome (44 + XO)
B. 44 autosomes plus XXY sex chromosomes (44 + XXY)
C. 44 autosomes plus three X chromosomes (44 + XXX)
D. 21 pairs of autosomes plus XY sex chromosomes

The evidence-first practice loop

1. Verify provenanceOfficial paper and final key before accepting a PYQ label.
2. Attempt closed-bookExpose the concept or execution gap before rereading.
3. Repair and returnClassify the miss and re-practice after a delay.

Canonical chapter practice

The Living World →Biological Classification →Plant Kingdom →Animal Kingdom →Morphology of Flowering Plants →Anatomy of Flowering Plants →Structural Organisation in Animals →Cell: The Unit of Life →Biomolecules →Cell Cycle and Cell Division →Photosynthesis in Higher Plants →Respiration in Plants →Plant Growth and Development →Breathing and Exchange of Gases →Body Fluids and Circulation →Excretory Products and their Elimination →Locomotion and Movement →Neural Control and Coordination →Chemical Coordination and Integration →Sexual Reproduction in Flowering Plants →Human Reproduction →Reproductive Health →Principles of Inheritance and Variation →Molecular Basis of Inheritance →Evolution →Human Health and Disease →Microbes in Human Welfare →Biotechnology: Principles and Processes →Biotechnology and its Applications →Organisms and Populations →Ecosystem →Biodiversity and Conservation →

Frequently asked questions

Are these official NEET 2018 Biology PYQs?

No. The previews are original NeetVellum practice questions. A historical item receives a PYQ label only after its official paper and authoritative final answer key are attached. Use the official archive for the source paper.

How should I use the NEET 2018 paper?

Solve the official paper under its original timing, verify against the final key, classify every miss, and then use the linked current-syllabus practice bank to repair the exposed concept.