Chapter 2: Biological Classification — Online MCQ Test
BIOLOGY · Grade 11 · CBSE(NCERT)
Practice Chapter 2: Biological Classification with a free chapter-wise online MCQ test.
This chapter covers: Five Kingdom Classification Monera Protista Fungi Plantae Animalia Prokaryotes Eukaryotes Classification Characteristics.
AI-generated questions from basic to board-exam level, with instant results and explanations.
Chapter 2: Biological Classification — Important Questions & Answers
Who proposed the Five Kingdom Classification system?
- A. Carl Woese
- B. R.H. Whittaker
- C. Ernst Haeckel
- D. Linnaeus
Answer: B. R.H. Whittaker
R.H. Whittaker proposed the Five Kingdom Classification in 1969 based on cell structure, body organisation, mode of nutrition, and reproduction.
R.H. Whittaker proposed the Five Kingdom Classification in 1969 based on cell structure, body organisation, mode of nutrition, and reproduction.
Which kingdom includes organisms that are prokaryotic?
- A. Monera
- B. Protista
- C. Fungi
- D. Plantae
Answer: A. Monera
Monerans are prokaryotic organisms, meaning they lack a true nucleus and membrane-bound organelles.
Monerans are prokaryotic organisms, meaning they lack a true nucleus and membrane-bound organelles.
A well-defined nucleus is absent in members of which kingdom?
- A. Animalia
- B. Plantae
- C. Monera
- D. Fungi
Answer: C. Monera
Members of Monera are prokaryotes and therefore do not have a membrane-bound nucleus.
Members of Monera are prokaryotes and therefore do not have a membrane-bound nucleus.
Which kingdom contains unicellular eukaryotic organisms?
- A. Monera
- B. Protista
- C. Fungi
- D. Plantae
Answer: B. Protista
Protista includes unicellular eukaryotes such as Amoeba and Paramecium.
Protista includes unicellular eukaryotes such as Amoeba and Paramecium.
An organism is unicellular, eukaryotic and often motile. It is most likely placed in which kingdom?
- A. Monera
- B. Protista
- C. Plantae
- D. Animalia
Answer: B. Protista
Unicellular eukaryotic and often motile organisms are typically placed in Protista.
Unicellular eukaryotic and often motile organisms are typically placed in Protista.
Which of the following correctly matches the kingdom with its mode of nutrition?
- A. Plantae – absorptive heterotrophs
- B. Fungi – absorptive heterotrophs
- C. Animalia – autotrophic
- D. Monera – only photosynthetic
Answer: B. Fungi – absorptive heterotrophs
Fungi are absorptive heterotrophs; they secrete enzymes and absorb digested food.
Fungi are absorptive heterotrophs; they secrete enzymes and absorb digested food.
Which statement best explains why viruses are not placed in Whittaker’s five kingdom classification?
- A. They are prokaryotic
- B. They lack cellular organisation
- C. They are multicellular
- D. They have chitinous walls
Answer: B. They lack cellular organisation
Viruses are acellular and do not show cellular organisation, so they are not included in the five kingdom system.
Viruses are acellular and do not show cellular organisation, so they are not included in the five kingdom system.
A scientist observes an organism that is eukaryotic, unicellular, and may be photosynthetic or heterotrophic. Which kingdom is the best fit?
- A. Protista
- B. Monera
- C. Fungi
- D. Animalia
Answer: A. Protista
Protista includes diverse unicellular eukaryotes, some photosynthetic and some heterotrophic.
Protista includes diverse unicellular eukaryotes, some photosynthetic and some heterotrophic.
Why did Whittaker place cyanobacteria in Monera instead of Protista?
- A. Because they are multicellular
- B. Because they are prokaryotic
- C. Because they lack cell wall
- D. Because they are always parasitic
Answer: B. Because they are prokaryotic
Cyanobacteria are bacteria and therefore prokaryotic, which places them in Monera.
Cyanobacteria are bacteria and therefore prokaryotic, which places them in Monera.
Which of the following statements about Kingdom Protista is the most accurate?
- A. It includes only photosynthetic unicellular organisms
- B. It includes only aquatic prokaryotes
- C. It is a diverse group of mostly unicellular eukaryotes
- D. It contains only organisms with chitinous cell walls
Answer: C. It is a diverse group of mostly unicellular eukaryotes
Protista is a diverse kingdom made up mainly of unicellular eukaryotic organisms with varied modes of nutrition and locomotion.
Protista is a diverse kingdom made up mainly of unicellular eukaryotic organisms with varied modes of nutrition and locomotion.