NEET MCQs Practice | Chapter 2 Biological Classification | Biology Class 11
Practice NEET Biology MCQs for Chapter 2: Biological Classification. Improve your concepts, recall important topics, and boost your Class 11 exam preparation with high-quality multiple-choice questions.If You Want To Read Our Quality Notes Of Chapter 2, Biological Classification, Click Here 🥰1. Who was the first person to attempt a more scientific classification of living organisms?
a) Linnaeus
b) Darwin
c) Aristotle
d) Whittaker
→ Correct answer: c) Aristotle
2. Aristotle classified plants into how many main groups?
a) Two
b) Three
c) Four
d) Five
→ Correct answer: b) Three
3. According to Aristotle, which of the following belonged to the group “plants”?
a) Vertebrates and invertebrates
b) Trees, shrubs, and herbs
c) Monera and Protista
d) Animals with and without red blood
→ Correct answer: b) Trees, shrubs, and herbs
4. Aristotle divided animals into two main groups based on:
a) Mode of nutrition
b) Body temperature
c) Presence or absence of red blood
d) Reproductive methods
→ Correct answer: c) Presence or absence of red blood
5. The first person to introduce the Two-Kingdom Classification was:
a) Whittaker
b) Linnaeus
c) Aristotle
d) Haeckel
→ Correct answer: b) Linnaeus
6. In Linnaeus’ Two-Kingdom system, Kingdom Plantae included:
a) All plants and fungi
b) All plants only
c) All non-green organisms
d) All animals and plants
→ Correct answer: b) All plants only
7. Which of the following organisms could not be placed properly in Linnaeus’ Two-Kingdom classification?
a) Mango
b) Euglena
c) Dog
d) Rose
→ Correct answer: b) Euglena
8. Which feature was not considered in early classification systems?
a) Mode of nutrition
b) Cell type
c) Morphology
d) Evolutionary relationship
→ Correct answer: d) Evolutionary relationship
9. Which of the following was not separated in the Two-Kingdom classification?
a) Prokaryotes and eukaryotes
b) Vertebrates and invertebrates
c) Monocots and dicots
d) Algae and fungi
→ Correct answer: a) Prokaryotes and eukaryotes
10. Why was the Two-Kingdom classification found to be incomplete?
a) It considered molecular biology
b) It was based only on nutrition
c) It failed to classify all organisms properly
d) It had too many kingdoms
→ Correct answer: c) It failed to classify all organisms properly
11. Which of the following organisms is photosynthetic as well as animal-like in behavior?
a) Paramecium
b) Fungi
c) Euglena
d) Amoeba
→ Correct answer: c) Euglena
12. Which of the following characteristics became important for modern classification?
a) Only morphology
b) Mode of nutrition and cell type
c) Size and shape
d) Color of organism
→ Correct answer: b) Mode of nutrition and cell type
13. The evolution of classification systems shows that:
a) Classification is static
b) Classification has developed scientifically over time
c) Aristotle’s system was final
d) Only morphology is important
→ Correct answer: b) Classification has developed scientifically over time
14. Which of the following is not a criterion used in modern classification systems?
a) Cell type
b) Habitat
c) Eye color
d) Evolutionary relationship
→ Correct answer: c) Eye color
15. Which statement about the changing number of kingdoms is true?
a) Scientists still follow only two kingdoms
b) The number of kingdoms has increased with more knowledge
c) Kingdoms have been reduced to one
d) Only animals were reclassified
→ Correct answer: b) The number of kingdoms has increased with more knowledge
16. What is the main reason for the development of new classification systems?
a) Discovery of fossils
b) Study of only animal behavior
c) Increased knowledge about cellular and genetic structures
d) Lack of need for classification
→ Correct answer: c) Increased knowledge about cellular and genetic structures
17. Which statement correctly summarizes the modern view of classification?
a) Based only on appearance
b) Based on what organisms are made of and how they evolved
c) Based only on reproduction
d) Based on use to humans
→ Correct answer: b) Based on what organisms are made of and how they evolved
18. Which of the following shows use-based grouping?
a) Grouping plants as trees, shrubs, herbs
b) Grouping by mode of nutrition
c) Grouping by cell type
d) Grouping by evolutionary link
→ Correct answer: a) Grouping plants as trees, shrubs, herbs
19. Fungi were a problem in Two-Kingdom classification because:
a) They are aquatic
b) They do not perform photosynthesis
c) They have chlorophyll
d) They are unicellular
→ Correct answer: b) They do not perform photosynthesis
20. The primary purpose of biological classification is:
a) To group organisms for fun
b) To organize and understand diversity of life
c) To make plant names shorter
d) To avoid studying evolution
→ Correct answer: b) To organize and understand diversity of life
21. Which of the following organisms belong to Kingdom Monera?
a) Amoeba and Yeast
b) Cyanobacteria and Bacteria
c) Mushroom and Fern
d) Paramoecium and Algae
→ Correct answer: b) Cyanobacteria and Bacteria
22. Which feature is common in both Monera and Protista?
a) Both are eukaryotic
b) Both are multicellular
c) Both can be autotrophic or heterotrophic
d) Both have chitinous cell walls
→ Correct answer: c) Both can be autotrophic or heterotrophic
23. Which of the following statements is true for Protists?
a) They are prokaryotic and multicellular
b) They are unicellular and eukaryotic
c) They are multicellular and autotrophic
d) They are without nucleus
→ Correct answer: b) They are unicellular and eukaryotic
24. Which of the following correctly matches the kingdom with its cell wall composition?
a) Fungi – Cellulose
b) Plantae – Chitin
c) Monera – Polysaccharides and amino acids
d) Animalia – Cell wall present
→ Correct answer: c) Monera – Polysaccharides and amino acids
25. Which of the following organisms belongs to Kingdom Protista?
a) Penicillium
b) Chlamydomonas
c) Spirogyra
d) Bacterium
→ Correct answer: b) Chlamydomonas
26. The body organization in Fungi is generally:
a) Cellular level
b) Tissue level
c) Loose tissue level (multicellular)
d) Organ system level
→ Correct answer: c) Loose tissue level (multicellular)
27. Which of the following kingdoms includes both unicellular and multicellular organisms?
a) Monera
b) Protista
c) Fungi
d) Plantae
→ Correct answer: c) Fungi
28. The nuclear membrane is absent in:
a) Monera
b) Protista
c) Fungi
d) Animalia
→ Correct answer: a) Monera
29. Which of the following is correctly matched?
a) Animalia – Autotrophic nutrition
b) Plantae – Autotrophic nutrition
c) Fungi – Photosynthetic
d) Protista – All multicellular
→ Correct answer: b) Plantae – Autotrophic nutrition
30. Which of the following statements about Monera is false?
a) They are prokaryotic
b) They are unicellular
c) They have nuclear membrane
d) They can be autotrophic or heterotrophic
→ Correct answer: c) They have nuclear membrane
31. Which of the following kingdoms includes organisms having tissue or organ-level organization?
a) Protista and Fungi
b) Plantae and Animalia
c) Monera and Protista
d) Monera and Fungi
→ Correct answer: b) Plantae and Animalia
32. Which statement best explains why Whittaker separated Fungi from Plantae?
a) Fungi lack chlorophyll and have chitin walls
b) Fungi are unicellular only
c) Fungi perform photosynthesis
d) Fungi are prokaryotic
→ Correct answer: a) Fungi lack chlorophyll and have chitin walls
33. The Three-Domain System divides organisms into:
a) Monera, Protista, and Fungi
b) Bacteria, Archaea, and Eukarya
c) Plants, Animals, and Fungi
d) Prokaryotes, Eukaryotes, and Viruses
→ Correct answer: b) Bacteria, Archaea, and Eukarya
34. In the Three-Domain System, Monera was divided into:
a) Protista and Fungi
b) Plantae and Animalia
c) Bacteria and Archaea
d) Algae and Protozoa
→ Correct answer: c) Bacteria and Archaea
35. Which of the following is not included in Domain Eukarya?
a) Protista
b) Plantae
c) Fungi
d) Monera
→ Correct answer: d) Monera
36. Which kingdom includes organisms like Amoeba and Paramoecium?
a) Protista
b) Monera
c) Fungi
d) Animalia
→ Correct answer: a) Protista
37. Which of the following shows heterotrophic holozoic nutrition?
a) Bacteria
b) Yeast
c) Humans
d) Algae
→ Correct answer: c) Humans
38. The kingdom which contains organisms having organ-system level of organization is:
a) Fungi
b) Plantae
c) Protista
d) Animalia
→ Correct answer: d) Animalia
39. The kingdom containing photosynthetic unicellular eukaryotes is:
a) Monera
b) Protista
c) Fungi
d) Plantae
→ Correct answer: b) Protista
40. Whittaker’s Five Kingdom system was a major advancement because it:
a) Ignored cell type
b) Classified organisms based on evolutionary and cellular characteristics
c) Was based only on morphology
d) Focused only on plants and animals
→ Correct answer: b) Classified organisms based on evolutionary and cellular characteristics
41. What type of organisms are included in Kingdom Protista?
a) Multicellular prokaryotic organisms
b) Multicellular eukaryotic organisms
c) Single-celled eukaryotic organisms ✅
d) Single-celled prokaryotic organisms
42. Where are protists mostly found?
a) Desert
b) Aquatic environment ✅
c) Forest soil
d) Mountains
43. Why is Kingdom Protista considered a link between plants, animals, and fungi?
a) Because all have the same metabolism
b) Because some are plant-like, some animal-like, and some fungi-like ✅
c) Because all are multicellular
d) Because all are photosynthetic
44. Which structures help protists in movement?
a) Cilia and flagella ✅
b) Pseudopodia and sporangia
c) Pellicle and silica wall
d) None of the above
45. How do protists reproduce?
a) Only sexually
b) Only asexually
c) Both asexually and sexually ✅
d) Cannot reproduce without fertilization
46. Which organisms are included in Chrysophytes?
a) Euglena and Amoeba
b) Diatoms and golden algae ✅
c) Plasmodium and Paramecium
d) Trypanosoma and Entamoeba
47. What is the cell wall of diatoms made of?
a) Cellulose
b) Chitin
c) Silica ✅
d) Protein
48. What are the uses of diatomaceous earth?
a) Water filtration, polishing surfaces, industrial filters ✅
b) Fertilizers
c) Food preservatives
d) None of the above
49. What structures help dinoflagellates in movement?
a) Pseudopodia
b) Cilia
c) Two flagella ✅
d) Pellicle
50. Red tide is caused by which protist?
a) Euglenoids
b) Dinoflagellates ✅
c) Chrysophytes
d) Protozoans
51. What covers the body of euglenoids?
a) Cell wall
b) Silica shell
c) Protein-rich pellicle ✅
d) Chitinous plates
52. What is the dual nature of euglenoids?
a) Only photosynthetic
b) Only heterotrophic
c) Plant-like in sunlight and animal-like in darkness ✅
d) Only parasitic
53. How do slime moulds obtain food?
a) Through photosynthesis
b) By absorbing dead and decaying organic matter ✅
c) Through predation
d) By feeding on blood
54. What is plasmodium in slime moulds?
a) Protective spore
b) Multinucleate creeping mass ✅
c) Single-celled organism
d) Photosynthetic body
55. Protozoans are which type of protists?
a) Photosynthetic
b) Heterotrophic unicellular ✅
c) Multicellular
d) Cell-wall containing
56. Amoeboid protozoans move using which structure?
a) Cilia
b) Flagella
c) Pseudopodia ✅
d) Pellicle
57. Which flagellated protozoan causes disease?
a) Paramecium
b) Trypanosoma ✅
c) Plasmodium
d) Euglena
58. How do ciliated protozoans take in food?
a) Moving with cilia and directing food into the gullet ✅
b) By photosynthesis
c) Absorption via pseudopodia
d) Using spores
59. Which is an example of sporozoans?
a) Amoeba
b) Euglena
c) Plasmodium ✅
d) Paramecium
60. Plasmodium causes which disease?
a) Sleeping sickness
b) Malaria ✅
c) Typhoid
d) Cholera
61. What type of nutrition do fungi exhibit?
a) Autotrophic
b) Heterotrophic ✅
c) Photosynthetic
d) Mixotrophic
62. Yeast is an example of which type of fungus?
a) Multicellular fungus
b) Unicellular fungus ✅
c) Parasitic fungus
d) Decomposer fungus
63. Which fungus is used to produce the antibiotic penicillin?
a) Puccinia
b) Penicillium ✅
c) Rhizopus
d) Aspergillus
64. The body of most fungi (except yeast) is made of thread-like structures called:
a) Mycelium
b) Hyphae ✅
c) Spores
d) Septa
65. Coenocytic hyphae are characterized by:
a) Presence of cross walls
b) Single nucleus per cell
c) Many nuclei in a single large cell ✅
d) Lack of cytoplasm
66. What are septa in fungi?
a) Reproductive spores
b) Cross walls dividing hyphae into cells ✅
c) Thread-like structures
d) Fruiting bodies
67. Fungi that feed on dead and decaying matter are called:
a) Parasites
b) Saprophytes ✅
c) Symbionts
d) Predators
68. Fungi living in close association with another organism for mutual benefit are called:
a) Saprophytes
b) Parasites
c) Symbionts ✅
d) Decomposers
69. Sexual reproduction in fungi involves which first step?
a) Meiosis
b) Plasmogamy ✅
c) Karyogamy
d) Budding
70. During sexual reproduction, the fusion of nuclei in fungi is called:
a) Plasmogamy
b) Karyogamy ✅
c) Meiosis
d) Fragmentation
71. The stage with two separate nuclei per cell in many fungi is called:
a) Haploid stage
b) Dikaryophase ✅
c) Diploid stage
d) Asexual stage
72. Phycomycetes are mostly found in:
a) Dry deserts
b) Wet or moist environments ✅
c) Arctic regions
d) Human intestines
73. What type of hyphae do Phycomycetes possess?
a) Branched septate
b) Aseptate and coenocytic ✅
c) Unicellular
d) Flagellated
74. Asexual spores of Phycomycetes include:
a) Conidia and ascospores
b) Zoospores and aplanospores ✅
c) Basidiospores and conidia
d) Zygospores and basidiospores
75. Sexual reproduction in Phycomycetes produces:
a) Conidia
b) Zoospores
c) Zygospores ✅
d) Basidiospores
76. Rhizopus is commonly known as:
a) Bread mould ✅
b) Yeast
c) Rust fungus
d) Mushroom
77. Ascomycetes are commonly called:
a) Club fungi
b) Sac fungi ✅
c) Imperfect fungi
d) Water molds
78. The sexual spores of ascomycetes are formed inside:
a) Conidiophores
b) Ascus ✅
c) Sporangium
d) Basidium
79. Asexual spores of ascomycetes are called:
a) Zoospores
b) Basidiospores
c) Conidia ✅
d) Zygospores
80. Basidiomycetes reproduce sexually by forming:
a) Zygospores
b) Ascospores
c) Basidiospores ✅
d) Conidia
81. What type of organisms are included in Kingdom Plantae?
a) Prokaryotic autotrophs
b) Eukaryotic organisms containing chlorophyll ✅
c) Heterotrophic prokaryotes
d) Multicellular fungi
82. What pigment is responsible for photosynthesis in plants?
a) Carotenoids
b) Hemoglobin
c) Chlorophyll ✅
d) Xanthophyll
83. Some plants are partially heterotrophic. Which of the following is an example?
a) Aloe vera
b) Venus flytrap ✅
c) Oak tree
d) Grass
84. Cuscuta (Amarbel) is a type of:
a) Insectivorous plant
b) Parasitic plant ✅
c) Aquatic plant
d) Epiphytic plant
85. Plant cell walls are mainly made of:
a) Chitin
b) Cellulose ✅
c) Silica
d) Protein
86. Which organelle in plant cells is the site of photosynthesis?
a) Mitochondria
b) Chloroplast ✅
c) Ribosome
d) Nucleus
87. Which of the following is NOT a group in Kingdom Plantae?
a) Bryophytes
b) Pteridophytes
c) Gymnosperms
d) Fungi ✅
88. Diploid Sporophyte phase (2n) in plants produces:
a) Gametes
b) Spores ✅
c) Seeds
d) Zygotes
89. Haploid Gametophyte phase (n) produces:
a) Spores
b) Gametes ✅
c) Seeds
d) Fruits
90. What is the term for the alternation of diploid and haploid phases in plants?
a) Metamorphosis
b) Alternation of generations ✅
c) Binary fission
d) Sporulation
91. In which plant phase is spores produced?
a) Gametophyte
b) Sporophyte ✅
c) Zygote
d) Seedling
92. In which plant phase are gametes produced?
a) Gametophyte ✅
b) Sporophyte
c) Spore
d) Zygote
93. The dominance of sporophyte or gametophyte phase varies among plants. Which plant group has a dominant sporophyte?
a) Bryophytes
b) Pteridophytes ✅
c) Algae
d) Moss
94. Which plant group has a dominant gametophyte phase?
a) Bryophytes ✅
b) Gymnosperms
c) Angiosperms
d) Pteridophytes
95. Venus flytrap traps insects for:
a) Reproduction
b) Photosynthesis
c) Nutrients ✅
d) Water absorption
96. Bladderwort is an example of:
a) Parasitic plant
b) Insectivorous plant ✅
c) Gymnosperm
d) Algae
97. Which feature is common to all members of Kingdom Plantae?
a) Heterotrophic nutrition
b) Alternation of generations ✅
c) Lack of nucleus
d) No chlorophyll
98. Chloroplasts are found in which type of plant cells?
a) Epidermal cells
b) Photosynthetic cells ✅
c) Root cells
d) Xylem
99. Which of the following plants depends on other plants for nutrients?
a) Mango
b) Cuscuta ✅
c) Fern
d) Pine
100. Alternation of generations is important because it:
a) Helps plants absorb water
b) Ensures reproduction and variation ✅
c) Prevents herbivory
d) Aids in photosynthesis
101. Why are viruses not considered truly living?
a) They cannot move
b) They lack a cellular structure ✅
c) They have DNA
d) They reproduce independently
102. Outside a host cell, viruses exist as:
a) Living cells
b) Crystalline particles ✅
c) Bacteria
d) Amoebas
103. Who first discovered that mosaic disease in tobacco was caused by something smaller than bacteria?
a) M.W. Beijerinck
b) Dmitri Ivanowsky ✅
c) W.M. Stanley
d) T.O. Diener
104. What did M.W. Beijerinck call the infectious fluid?
a) Capsid fluid
b) Contagium vivum fluidum ✅
c) Viroid RNA
d) Bacteriophage fluid
105. What did W.M. Stanley demonstrate about viruses in 1935?
a) They can be crystallized ✅
b) They are made of DNA and RNA
c) They cause plant diseases only
d) They are larger than bacteria
106. The protein coat of a virus is called:
a) Capsomere
b) Capsid ✅
c) Mycobiont
d) Phycobiont
107. Viruses contain which type of genetic material?
a) Both DNA and RNA
b) Either DNA or RNA ✅
c) Only DNA
d) Only RNA
108. Plant viruses usually have:
a) Double-stranded DNA
b) Single-stranded RNA ✅
c) Double-stranded RNA
d) DNA and RNA both
109. Bacteriophages typically have:
a) Single-stranded RNA
b) Single-stranded DNA
c) Double-stranded DNA ✅
d) Protein only
110. Viruses are called obligate parasites because:
a) They can survive without a host
b) They reproduce independently
c) They cannot survive or reproduce without a host ✅
d) They only infect plants
111. Which of the following is a human disease caused by viruses?
a) Mosaic disease
b) Smallpox ✅
c) Potato spindle tuber disease
d) Mad cow disease
112. Who discovered viroids in 1971?
a) M.W. Beijerinck
b) T.O. Diener ✅
c) Dmitri Ivanowsky
d) W.M. Stanley
113. Viroids consist of:
a) DNA only
b) RNA only ✅
c) Protein only
d) DNA and RNA both
114. Prions are made of:
a) DNA
b) RNA
c) Abnormally folded proteins ✅
d) Capsid
115. Which prion disease affects humans?
a) Mad cow disease
b) Creutzfeldt–Jakob disease (CJD) ✅
c) Mosaic disease
d) Potato spindle tuber disease
116. Lichens are a symbiotic association between:
a) Two fungi
b) Alga and fungus ✅
c) Two algae
d) Virus and fungus
117. In lichens, the algal part is called:
a) Mycobiont
b) Phycobiont ✅
c) Capsid
d) Hyphae
118. In lichens, the fungal part is called:
a) Phycobiont
b) Mycobiont ✅
c) Capsomere
d) Hyphae
119. Lichens are excellent indicators of:
a) Water quality
b) Soil fertility
c) Air quality ✅
d) Temperature
120. Lichens do not grow well in:
a) Moist areas
b) Polluted areas ✅
c) Rocky areas
d) Forest soil
