Biological Classification is a Class 11 Biology chapter that carries about 2.8% of the Biology questions in NEET. Practise it with 63 questions covering 4 topics, each with an explanation.
Sets of 15 questions that adapt to your level, with an explanation for every answer.
Across the 13 previous year papers, Biological Classification had 40 questions, about 3.1 a year. The most in one paper was 9, in AIPMT 2014.
| Paper | Questions from this chapter |
|---|---|
| NEET 2026 | 1 |
| NEET 2025 | 1 |
| NEET 2024 | 2 |
| NEET 2023 | 1 |
| NEET 2022 | 3 |
| NEET 2021 | 0 |
| NEET 2020 | 1 |
| NEET 2019 | 3 |
| NEET 2018 | 4 |
| NEET 2017 | 3 |
| NEET 2016 | 4 |
| Re-AIPMT 2015 | 8 |
| AIPMT 2014 | 9 |
8 questions from the practice bank, spread across the chapter's topics. The full set is in the app.
The red tides in the sea are caused by the rapid multiplication of:
Answer: B. dinoflagellates, such as Gonyaulax
Why: The toxins released may kill the other marine animals.
Plasmogamy is the:
Answer: B. fusion of the protoplasts of the two motile or non-motile gametes
Why: The karyogamy follows it.
Methanogens, which produce methane, are found in:
Answer: D. the guts of ruminant animals such as cows and buffaloes
Why: These archaebacteria live in anaerobic conditions in the rumen and in marshes, releasing methane (biogas).
Viroids were discovered by T.O. Diener in 1971. A viroid differs from a virus in that it:
Answer: C. lacks the protein coat, and has only a free RNA of low molecular weight
Why: The potato spindle tuber disease is caused by it.
The kingdom Fungi differs from the kingdom Plantae in that the fungi:
Answer: A. lack the chlorophyll and are heterotrophic, with the chitin in the cell wall
Why: They absorb the nutrients from the dead and decaying matter.
The parasitic fungus which causes the rust and smut of the wheat is a/an:
Answer: D. Basidiomycete (Puccinia, Ustilago)
Why: Albugo causes the white rust in the crucifers.
The bacteria living in the extreme habitats such as the salty areas (halophiles), hot springs (thermoacidophiles) and marshy areas (methanogens) are:
Answer: A. archaebacteria
Why: The cell wall of these bacteria lacks the peptidoglycan.
Viroids differ from viruses chiefly in that viroids:
Answer: B. consist of free RNA with no protein coat
Why: Viroids are composed of low-molecular-weight free RNA, entirely lacking the protein coat that characterises viruses, and were discovered as agents of certain plant diseases.
Biological Classification carries about 2.8% of the Biology questions in NEET. Across the 13 previous year papers on NeetVictory it appeared 40 times, about 3.1 questions a year.
Biological Classification is a Class 11 Biology chapter in the NCERT syllabus.
NeetVictory has 63 practice questions on Biological Classification, each with an explanation, in sets of 15 that adapt to your level. This page shows a free sample.
NeetVictory