Class 11 Biology — Chapter 2: Biological Classification
60 practice questions · 20 Easy · 20 Medium · 20 Hard
Practise Class 11 Biology Chapter 2, "Biological Classification", with 60 NCERT-aligned multiple-choice questions. The set is split into 20 Easy, 20 Medium and 20 Hard questions, so you can warm up on the fundamentals and then push into the exam-level problems that separate top scorers in CBSE Board exams and NEET UG.
"Biological Classification" is one of the chapters where diagram-based recall, terminology and NCERT line-by-line accuracy really pays off. Each MCQ on this chapter is timed and uses exam-grade marking (+2 correct, −1 wrong, 0 skipped), training the same accuracy-under-pressure that real papers demand. Every question carries a short explanation, so a wrong answer becomes a quick lesson rather than a dead end — the fastest way to close gaps before a test.
Use this chapter as targeted revision: attempt the Easy set first to confirm your basics on Biological Classification, then move to Medium and Hard to test application and problem-solving. Your accuracy, streaks and XP save automatically, and the chapter feeds into your overall Class 11 Biology mastery score. A few sample questions are shown below; sign in free to practise all 60.
Key concepts: Biological Classification (Class 11 Biology)
This chapter covers Whittaker's five-kingdom classification and the characteristics of Monera, Protista, Fungi, Plantae and Animalia, plus viruses.
- Five-kingdom system
- Whittaker classified life into Monera, Protista, Fungi, Plantae and Animalia based on cell structure, nutrition and organisation.
- Monera
- Prokaryotes (bacteria, archaebacteria, cyanobacteria); diverse nutrition; include the most ancient organisms.
- Protista
- Single-celled eukaryotes (e.g. Amoeba, Euglena, diatoms); a link between kingdoms.
- Fungi
- Heterotrophic eukaryotes with chitin walls; saprophytic, parasitic or symbiotic (lichens, mycorrhizae).
- Viruses & others
- Acellular, obligate parasites (DNA or RNA in a protein coat); viroids and lichens are also covered.
💡 Exam tips for Biological Classification
- Classify each kingdom by cell type (pro/eukaryote), body organisation and mode of nutrition.
- Viruses are not in the five kingdoms — they are acellular and need a host to reproduce.
Sample questions
Five-kingdom classification was proposed by:
R. H. Whittaker, 1969.
Fungi cell wall is made of:
Chitinous walls distinguish fungi.
Lichens are symbiotic association of:
Mutualism: algal photosynthesis + fungal protection.
Biological Classification — FAQs
What are the key concepts in Class 11 Biology Biological Classification?+
This chapter covers Whittaker's five-kingdom classification and the characteristics of Monera, Protista, Fungi, Plantae and Animalia, plus viruses. Key ideas include Five-kingdom system, Monera, Protista, Fungi, Viruses & others.
What does Class 11 Biology Chapter 2 (Biological Classification) cover on XamBaaz?+
It covers 60 NCERT-aligned MCQs on "Biological Classification" — 20 Easy, 20 Medium and 20 Hard — each with a timed quiz and an instant explanation, suitable for CBSE Board exams and NEET UG.
Are these "Biological Classification" questions free to practise?+
Yes — sign in with Google to practise "Biological Classification" free. Full unlimited access is ₹999/year (limited-time launch price), with no per-chapter charges.
How should I revise "Biological Classification" for the exam?+
Start with the Easy quiz to confirm your fundamentals, then attempt Medium and Hard for application-level practice. Review each explanation, retry the questions you miss, and track your accuracy on this chapter until it is consistently high.
Practise all 60 questions free
Timed quizzes, instant scoring, streaks and XP. Sign in with Google — no card needed.
Start this chapter free →