Biology - Biological Classification
Practise 5 IAT (IISER) previous year questions on Biological Classification, compiled from papers spanning 2019 to 2026. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty IAT (IISER) tests.
Biological Classification has been asked in 3 of the 9 years of IAT (IISER) papers analysed (2017–2026), with 5 questions in all. 100% of them were easy, 0% moderate and 0% tough. Most of its questions came from 2019, with 2 questions that year. In the last three years (2023–2026) it had 1 question across 3 papers, about 0.3 per paper.
The chapter's 4 topics are not weighted equally: Viruses (2 questions, 40%), Kingdom Fungi (1 question, 20%), and Kingdom Monera (1 question, 20%) have been asked the most. Viruses has also led over the last five years, with 2 questions.
- 1If cell wall was used as the only criterion for classifying organisms, then Mycoplasma would have belonged to which one of the following gro2026Introduction
- 2What are retroviruses?2025Viruses
- 3During the CoVID-19 pandemic, SARS-CoV2 virus mutated multiple times giving rise to many variants. What is the genetic material of the SARS-2022Viruses
- 4Which of the following produces a dikaryotic phase in Basidiomycetes?2019Kingdom Fungi
- 5Which one of the following helps in bacterial motility?2019Kingdom Monera
Frequently Asked Questions
1.How many questions are available for Biological Classification?
This chapter includes 5 questions compiled from IAT (IISER) papers spanning 2019 to 2026.
2.Are these questions only from IAT (IISER), or from other exams too?
These are IAT (IISER) questions specifically for the Biological Classification chapter. Questions from other exams like JEE Main or NTA Abhyas (JEE Main) are organised separately under their respective exam sections.
3.Is Biological Classification an important chapter for IAT (IISER) Biology?
Biological Classification has appeared in 4 of the 10 years of IAT (IISER) papers covered here, with 5 questions across 4 papers - about one per paper it appears in.
4.What is the difficulty level of Biological Classification questions in IAT (IISER)?
Of the 5 questions analysed for this chapter, 100% are easy, 0% moderate and 0% tough. 2019 had the most, with 2 questions.
5.Which topics in Biological Classification should I focus on?
These topics have carried the most weightage in Biological Classification:
- Viruses - 2 questions (40%)
- Kingdom Fungi - 1 question (20%)
- Kingdom Monera - 1 question (20%)
6.Is Biological Classification's weightage in IAT (IISER) going up or down?
Across all 4 papers analysed, Biological Classification has averaged about 1.3 questions per paper. In the last three years (2023–2026), that average has fallen, at about 0.3 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.