Biology - Biological Classification
Practise 15 NEST (NISER) previous year questions on Biological Classification, compiled from papers spanning 2011 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 NEST (NISER) tests.
Biological Classification has been asked in 7 of the 16 years of NEST (NISER) papers analysed (2011–2026), with 15 questions in all. 13% of them were easy, 87% moderate and 0% tough. Most of its questions came from 2024, with 6 questions that year. In the last three years (2024–2026) it had 7 questions across 4 papers, about 1.8 per paper.
The chapter's 6 topics are not weighted equally: Kingdom Monera (6 questions, 40%), Viruses (3 questions, 20%), and Introduction (2 questions, 13%) have been asked the most. Kingdom Monera has also led over the last five years, with 4 questions.
- 1Bacteria have cell wall made of a polymer of N-acetylglucosamine and N-acetylmuramic acid connected by -1,4 glycosidic bonds. Lysozyme, an e2026Kingdom Monera
- 2In the Tree of Life, different life forms are placed on branches of the tree based on their evolutionary relationship with each other. Howev2024 (Session 1)Viruses
- 3Scientists have recently found that an archaebacteria belonging to the phylum Lokiarchaeota can be grown only in co-culture along with a Met2024 (Session 1)Kingdom Monera
- 4A researcher found a cottony growth on a plant tissue. On microscopic examination of the sample from there, the researcher observed branched2024 (Session 1)Kingdom Fungi
- 5Chloroplasts of certain algal taxa such as Cryptophyta are surrounded by fourmembrane envelope. The most likely reason for the origin of fou2024 (Session 2)Introduction
- 6The table shows the presence of photosynthetic pigments in bacterial and algal groups. All eukaryotic chloroplasts are derived from a common2024 (Session 2)Algae: Thallophytes
- 7Mitochondria are present in species , but absent in and . The species , and , respectively, are:2024 (Session 2)Kingdom Monera
- 8Bacterial endospores are highly resistant to environmental stressors such as heat, UV radiation, and oxidizing agents. They can remain dorma2023 (Session 1)Viruses
- 9The life cycle of yeast Saccharomyces cerevisiae which reproduces both sexually as well as asexually is depicted below. and P represent2023 (Session 2)Kingdom Fungi
- 10An organism, M, has physiological features as listed in the table below. Based on this information, the organism is:2022 (Session 1)Kingdom Monera
- 11Bacteria can be divided into four groups based on the optimal temperatures under which they grow: psychrophiles , mesophiles , facultative t2021 (Session 1)Kingdom Monera
- 12Some characteristic features [presence and absence ] of certain organisms belonging to various categories and are listed (Table). The catego2021 (Session 2)Kingdom Monera
- 13Escherichia coli grown in liquid nutrient medium is infected with a virus at a concentration that will result in the entry of a single virus2021 (Session 2)Viruses
- 14A student was given three unlabelled permanent slides. In an effort to identify these specimens, she places the slides under the microscope 2020 (Session 1)Kingdom Protista
- 15Whittaker had proposed a five-kingdom system for classification of living organisms, which are (i) Monera, (ii) Protista, (iii) Plantae, (iv2011Introduction
Frequently Asked Questions
1.How many questions are available for Biological Classification?
This chapter includes 15 questions compiled from NEST (NISER) papers spanning 2011 to 2026.
2.Are these questions only from NEST (NISER), or from other exams too?
These are NEST (NISER) 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 NEST (NISER) Biology?
Biological Classification has appeared in 7 of the 16 years of NEST (NISER) papers covered here, with 15 questions across 10 papers - about 2 per paper it appears in.
4.What is the difficulty level of Biological Classification questions in NEST (NISER)?
Of the 15 questions analysed for this chapter, 13% are easy, 87% moderate and 0% tough. 2024 had the most, with 6 questions.
5.Which topics in Biological Classification should I focus on?
These topics have carried the most weightage in Biological Classification:
- Kingdom Monera - 6 questions (40%)
- Viruses - 3 questions (20%)
- Introduction - 2 questions (13%)
6.Is Biological Classification's weightage in NEST (NISER) going up or down?
Across all 10 papers analysed, Biological Classification has averaged about 1.5 questions per paper. In the last three years (2024–2026), that average has risen, at about 1.8 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.