Karnataka 1st PUC Biology Chapter 2 Biological Classification Important Questions

Biological Classification is an important chapter in Karnataka 1st PUC Biology. It introduces students to the scientific methods used to classify living organisms based on their cellular structure, organisation, nutrition, reproduction, and evolutionary relationships. The chapter covers Whittaker's five-kingdom classification: Monera, Protista, Fungi, Plantae, Animalia, as well as viruses, viroids, and lichens.

For effective preparation, students should understand the characteristics of different kingdoms and practise questions based on important concepts, examples, and biological processes. The Karnataka 1st PUC Biology Chapter 2 Important Questions provided here are based on the chapter-wise question material issued by the Department of School Education (Pre-University), Government of Karnataka, for the 2026–27 academic session.

The questions cover important concepts from the chapter and help students assess their understanding through multiple-choice practice. Students can also refer to the Karnataka Board Class 11 Biology syllabus to understand the subject coverage for the academic session.

Karnataka 1st PUC Biology Chapter 2 Important Questions

The official question material includes questions on the five-kingdom classification, Monera, Protista, Fungi, plant groups, and other biological entities. Students can practise the following questions to revise the concepts covered in the chapter.

Q1. The classification system proposed by Linnaeus was a __________ kingdom system of classification.

(A) Two
(B) Three
(C) Four
(D) Five

Answer: (A) Two

2. Five kingdom system of classification was proposed by _______, in the year _________. 

(A) Whittaker, 1960 

(B) Whittaker, 1969 

(C) John Ray, 1975 

(D) de Candole, 1978 

: (B) Whittaker, 1969 

Q3. Which of the following characteristics served as criteria for the five-kingdom classification proposed by R. H. Whittaker?

(A) Cell structure and thallus organisation
(B) Mode of nutrition and reproduction
(C) Phylogenetic relationships
(D) All of these

Answer: (D) All of these

Q4. In Whittaker's five-kingdom classification, eukaryotes are distributed among how many kingdoms?

(A) Two
(B) Three
(C) Four
(D) All five kingdoms

Answer: (C) Four

Q5. Which of the following is an incorrect statement regarding Mycoplasma?

(A) They lack a cell wall.
(B) They are the smallest living cells.
(C) They cannot survive without oxygen.
(D) They are pathogenic in plants and animals.

Answer: (C) They cannot survive without oxygen.

Q6. The Archaebacteria that survive in extremely salty areas are called:

(A) Halophiles
(B) Thermoacidophiles
(C) Methanogens
(D) All of these

Answer: (A) Halophiles

Q7. In Escherichia coli:

(A) An organised nucleus is present.
(B) One chromosome is present.
(C) One DNA molecule is present.
(D) One RNA molecule is present.

Answer: (C) One DNA molecule is present.

Q8. Peptidoglycan is a characteristic constituent of the cell wall of:

(A) Eubacteria and unicellular eukaryotes
(B) Bacteria and cyanobacteria
(C) Archaebacteria and eukaryotes
(D) All members of Monera and Protista

Answer: (B) Bacteria and cyanobacteria

Q9. All eukaryotic unicellular organisms belong to which kingdom?

(A) Monera
(B) Protista
(C) Fungi
(D) Bacteria

Answer: (B) Protista

Q10. Which protist reproduces through both binary fission and conjugation?

(A) Amoeba
(B) Paramecium
(C) Euglena
(D) Monocystis

Answer: (B) Paramecium

Karnataka 1st PUC Biology Chapter 2 Important Questions PDF

Students preparing for the 2026–27 academic session can use the chapter-wise Biology question PDF released by the Department of School Education (Pre-University), Government of Karnataka.

For additional preparation, students can refer to the Karnataka 1st PUC Biology Model Question Paper.

Benefits of Using Biological Classification 1st PUC Biology Important Questions

Practising chapter-wise questions helps students revise important concepts, improve MCQ-solving skills, and identify topics that need more attention.

1. Helps Revise Important Concepts

Questions cover key topics such as the five-kingdom classification, Monera, Protista, and Fungi. Students can refer to the Karnataka Board Class 11 Biology syllabus while revising.

2. Improves Exam Preparation

Solving MCQs helps students practise selecting correct answers and applying concepts. The Karnataka 1st PUC Biology model question paper provides additional exam practice.

3. Supports Systematic Revision

Students can practise questions after completing each topic and use the Karnataka 1st PUC syllabus to plan their studies.

4. Helps Identify Weak Areas

Checking incorrect answers helps students identify topics that require further revision. Understanding the Karnataka 1st PUC exam pattern 2026-27 can also help them prepare accordingly.

5. Enables Self-Assessment

The PDF includes separate answer keys for the MCQ and practice sections. Students can also solve Karnataka 1st PUC mid-term question papers with answer keys to assess their preparation.

Regular practice alongside textbook revision helps students strengthen their understanding of Biological Classification and prepare systematically for examinations.