Crucial Practice Problems for CBSE Class 11 Biology Chapter 2: Biological Classification
FAQs on Important Questions for CBSE Class 11 Biology Chapter 2 - Biological Classification
1. Which topics from Chapter 2 Biological Classification are most frequently included in CBSE Class 11 Biology board exams?
Key topics often asked are:
- The five-kingdom classification and its criteria
- Characteristics and significance of each kingdom: Monera, Protista, Fungi, Plantae, Animalia
- Differences between prokaryotic and eukaryotic cells
- Unique features of viruses, viroids, and lichens
- Economic importance and ecological roles of microorganisms
2. What are some expected 3-mark and 5-mark questions from Biological Classification for CBSE 2025-26 exams?
Common 3-mark questions include:
- Enumerating differences between Monera and Protista
- Describing the advantages of five-kingdom classification
- Naming examples and roles of important fungi
- Explaining the basis of modern classification systems
- Comparing features of all five kingdoms with examples
- Describing the structure, features, and importance of viruses and viroids
3. How should students prioritise important questions from Chapter 2 while preparing for the Biology exam?
Students should:
- Identify high-weightage concepts from recent board papers
- Focus more on classification principles, kingdom features, and distinguishing characteristics
- Practice descriptive questions that require diagrams (e.g., virus structure)
- Review conceptual HOTS and application questions for deeper understanding
4. What are some Higher Order Thinking Skills (HOTS) questions that may appear from this chapter?
HOTS for Chapter 2 may include:
- Justifying why certain organisms cannot be classified under plants or animals
- Analysing the ecological impacts if one kingdom (e.g., Fungi) ceased to exist
- Evaluating the limitations of Whittaker’s five-kingdom classification with examples
5. Why has the five-kingdom classification system replaced the earlier two-kingdom classification for biological organisms?
The five-kingdom classification replaced the older system because it considers key criteria like cell structure (prokaryotic vs. eukaryotic), level of organization, nutrition mode, and evolutionary relationships. The two-kingdom system could not accommodate organisms like bacteria, fungi, and protists adequately, making the five-kingdom classification more comprehensive for CBSE and NCERT syllabi.
6. What common mistakes do students make when answering important questions on Biological Classification?
Students often:
- Mix up features of Monera and Protista
- Provide incomplete comparisons between kingdoms
- Neglect examples when explaining kingdom features
- Ignore recent developments or deeper conceptual reasoning as needed for HOTS
7. How are important questions for board exams selected from Chapter 2 Biological Classification each year?
Important questions are chosen based on:
- Previous years’ CBSE exam trends
- Weightage as per the current syllabus
- Ability to test both factual recall and critical understanding
- Inclusion of application-based and diagram-based queries
8. What is the significance of including viruses, viroids, and lichens in Biological Classification?
These groups are included because they do not fit neatly into any kingdom, having unique structural and reproductive features. Viruses and viroids are non-cellular and replicate only inside hosts, while lichens represent symbiotic relationships, highlighting the complexities and exceptions in classification.
9. How can marking schemes help students approach important questions in the CBSE Biology board exam?
Understanding the marking scheme helps students allocate correct time to high-weightage questions, structure longer answers with key points and examples, and meet the evaluators’ expectations for detailed diagrams and justifications, thereby maximising scores.
10. How does studying case studies or real-life examples improve answers to important questions from Biological Classification?
Including case studies (such as disease outbreaks caused by fungi or bacteria, and industrial uses of microorganisms) demonstrates application-based understanding, which fetches higher marks and shows deeper concept clarity in board exams.











