1–10: Basics of Biology & Living Organisms
Q1. Which feature is common to all living organisms?
A. Ability to move
B. Presence of a cell membrane
C. Multicellularity
D. Photosynthesis
Answer: B
Q2. Which of the following is NOT a characteristic of living organisms?
A. Reproduction
B. Growth
C. Respiration
D. Mineral composition alone
Answer: D
Q3. What is the smallest unit of life?
A. Atom
B. Cell
C. Tissue
D. Organ
Answer: B
Q4. Which term describes all organisms living together in a specific area?
A. Community
B. Population
C. Species
D. Ecosystem
Answer: A
Q5. Which type of reproduction produces offspring genetically identical to the parent?
A. Sexual
B. Asexual
C. Cross-pollination
D. Hybridization
Answer: B
Q6. Which of these represents an example of a species?
A. All mammals
B. Homo sapiens
C. Felidae
D. Primates
Answer: B
Q7. Which is the correct sequence of taxonomic hierarchy from broadest to narrowest?
A. Kingdom → Phylum → Class → Order → Family → Genus → Species
B. Phylum → Kingdom → Class → Order → Family → Genus → Species
C. Kingdom → Class → Phylum → Order → Family → Genus → Species
D. Genus → Species → Family → Order → Class → Phylum → Kingdom
Answer: A
Q8. A group of closely related organisms that can interbreed and produce fertile offspring is called:
A. Genus
B. Family
C. Species
D. Class
Answer: C
Q9. Which of the following is a kingdom-level organism?
A. Plantae
B. Homo
C. Felis
D. Primates
Answer: A
Q10. Who is considered the “Father of Modern Taxonomy”?
A. Charles Darwin
B. Gregor Mendel
C. Carolus Linnaeus
D. Robert Hooke
Answer: C
11–20: Taxonomy & Classification Principles
Q11. Which of these is the main purpose of taxonomy?
A. Study animal behavior
B. Identify, name, and classify organisms
C. Measure photosynthesis rates
D. Predict metabolic reactions
Answer: B
Q12. Organisms grouped into the same genus share:
A. Identical DNA
B. High similarity and common ancestry
C. The same habitat
D. Same diet
Answer: B
Q13. Which taxonomic level contains the largest number of organisms?
A. Kingdom
B. Family
C. Genus
D. Species
Answer: A
Q14. In binomial nomenclature, which word is capitalized?
A. Species
B. Genus
C. Family
D. Order
Answer: B
Q15. Which statement about species is correct?
A. Members of a species never show variation
B. Members can interbreed and produce fertile offspring
C. Species is the broadest taxonomic category
D. All members have identical DNA
Answer: B
Q16. In taxonomy, what comes immediately above ‘family’?
A. Genus
B. Order
C. Class
D. Phylum
Answer: B
Q17. Which of the following is the most specific taxonomic level?
A. Class
B. Family
C. Species
D. Genus
Answer: C
Q18. Which of these describes a correctly written scientific name?
A. homo sapiens
B. Homo sapiens
C. Homo Sapiens
D. Homo sapiens (all lowercase)
Answer: B
Q19. Taxonomy helps us understand:
A. Evolutionary relationships among organisms
B. Chemical composition of cells
C. Human anatomy
D. Ecosystem dynamics
Answer: A
Q20. What is the role of classification in biology?
A. Only for identifying new species
B. Arranging organisms based on similarities and evolutionary relationships
C. Counting organisms in a habitat
D. Measuring metabolic rates
Answer: B
21–30: Biodiversity & Nomenclature
Q21. A taxonomic unit that groups organisms with many features in common is called:
A. Kingdom
B. Genus
C. Family
D. Species
Answer: B
Q22. Which of the following is NOT part of binomial nomenclature rules?
A. Genus name capitalized
B. Species name lowercase
C. Both italicized in print
D. Family name used in scientific name
Answer: D
Q23. Organisms in the same phylum share:
A. Only habitat
B. Major structural features
C. Reproductive compatibility
D. Same genus
Answer: B
Q24. Which of the following terms refers to a group of populations in the same area?
A. Ecosystem
B. Community
C. Family
D. Species
Answer: B
Q25. The science of classifying organisms based on similarities is called:
A. Ecology
B. Genetics
C. Taxonomy
D. Physiology
Answer: C
Q26. Which of these is NOT a taxonomic rank?
A. Genus
B. Class
C. Order
D. Species complex
Answer: D
Q27. The correct order of categories from most general to most specific is:
A. Species → Genus → Family → Order → Class → Phylum → Kingdom
B. Kingdom → Phylum → Class → Order → Family → Genus → Species
C. Phylum → Kingdom → Class → Family → Order → Genus → Species
D. Class → Kingdom → Phylum → Family → Genus → Species
Answer: B
Q28. Members of the same genus:
A. Belong to different families
B. Share evolutionary traits and high similarity
C. Always inhabit the same area
D. Are always identical genetically
Answer: B
Q29. The main difference between genus and species is:
A. Genus is broader; species is most specific
B. Species is broader; genus is most specific
C. Genus refers to habitat; species to diet
D. No difference exists
Answer: A
Q30. Which level comes immediately below class in hierarchy?
A. Family
B. Order
C. Genus
D. Species
Answer: B
31–40: Diversity, Plant & Animal Kingdoms
Q31. Which kingdom includes multicellular, autotrophic organisms with cell walls made of cellulose?
A. Animalia
B. Plantae
C. Fungi
D. Protista
Answer: B
Q32. Which kingdom consists mostly of unicellular eukaryotes?
A. Plantae
B. Protista
C. Animalia
D. Fungi
Answer: B
Q33. Members of the kingdom Fungi are:
A. Autotrophs with chlorophyll
B. Heterotrophs absorbing nutrients
C. Only unicellular
D. None of the above
Answer: B
Q34. Which of the following is an example of a prokaryotic kingdom?
A. Plantae
B. Protista
C. Monera
D. Fungi
Answer: C
Q35. Which phylum includes animals with radial symmetry and cnidocytes?
A. Porifera
B. Cnidaria
C. Mollusca
D. Annelida
Answer: B
Q36. Which of the following animals is a vertebrate?
A. Sponge
B. Earthworm
C. Fish
D. Jellyfish
Answer: C
Q37. Which plant group reproduces by spores but has vascular tissue?
A. Bryophytes
B. Pteridophytes
C. Gymnosperms
D. Angiosperms
Answer: B
Q38. Angiosperms are classified based on:
A. Type of spores
B. Presence of seeds and flowers
C. Habitat
D. Stem anatomy only
Answer: B
Q39. Gymnosperms differ from angiosperms in that:
A. They produce flowers
B. Seeds are naked, not enclosed in fruit
C. They are unicellular
D. They lack vascular tissue
Answer: B
Q40. Which of the following is an example of a unicellular eukaryote?
A. Amoeba
B. Algae like Spirogyra
C. Fungi like Agaricus
D. Fern
Answer: A
41–50: Practical & Conceptual Applications
Q41. Which is the primary criterion for grouping organisms in modern classification?
A. Economic importance
B. Morphological and evolutionary similarities
C. Habitat
D. Color
Answer: B
Q42. A population is defined as:
A. All organisms in a community
B. A group of individuals of the same species in an area
C. All species in a kingdom
D. A genus and its families
Answer: B
Q43. Which of the following represents the largest number of species?
A. Genus
B. Family
C. Order
D. Kingdom
Answer: D
Q44. Which of the following is NOT true about binomial nomenclature?
A. Genus name is capitalized
B. Species name is lowercase
C. Both words are italicized in print
D. Family name is included in the scientific name
Answer: D
Q45. The study of evolutionary relationships among organisms is called:
A. Taxonomy
B. Phylogeny
C. Ecology
D. Anatomy
Answer: B
Q46. Organisms sharing a common ancestor and many traits belong to the same:
A. Phylum
B. Genus
C. Family
D. Kingdom
Answer: B
Q47. Which kingdom includes mostly multicellular heterotrophs that ingest food?
A. Plantae
B. Fungi
C. Animalia
D. Protista
Answer: C
Q48. Which is a correct way to write a species name for a human?
A. Homo sapiens
B. homo Sapiens
C. Homo Sapiens
D. homo sapiens
Answer: A
Q49. Which is the smallest taxonomic category in the hierarchy?
A. Kingdom
B. Family
C. Genus
D. Species
Answer: D
Q50. Which of the following is the main difference between genus and species?
A. Genus is broader; species is most specific
B. Species is broader; genus is most specific
C. Genus and species are the same
D. Genus refers to habitat; species to diet
Answer: A
51–65: Remaining/Minor Points of “The Living World”
Q51. Aristotle classified animals into:
A. Two groups – blooded and bloodless
B. Three groups – vertebrates, invertebrates, amphibians
C. Based on habitats only
D. Based on diet only
Answer: A
Q52. Haeckel proposed a third kingdom in addition to Plantae and Animalia. Which was it?
A. Monera
B. Protista
C. Fungi
D. Bacteria
Answer: B
Q53. Bentham & Hooker’s classification primarily focused on:
A. Animal embryology
B. Plant morphology
C. Fossil records
D. Genetics
Answer: B
Q54. Which of the following kingdoms includes organisms that are mostly decomposers?
A. Plantae
B. Fungi
C. Animalia
D. Protista
Answer: B
Q55. Which of the following is an example of an exception in scientific naming?
A. Homo sapiens
B. Triticum aestivum
C. Brassica oleracea var. botrytis
D. Felis catus
Answer: C
Q56. Bryophytes differ from pteridophytes in that bryophytes:
A. Have vascular tissues
B. Are non-vascular
C. Produce seeds
D. Have flowers
Answer: B
Q57. Which of the following is a feature of Porifera?
A. Radial symmetry
B. Presence of pores (ostia)
C. Segmented body
D. Coelomates
Answer: B
Q58. Cnidarians are distinguished from sponges by the presence of:
A. Pores
B. Nematocysts (cnidocytes)
C. Vascular tissue
D. Seeds
Answer: B
Q59. In plants, the correct progression from simplest to complex tissue system is:
A. Parenchyma → Collenchyma → Sclerenchyma
B. Collenchyma → Parenchyma → Sclerenchyma
C. Sclerenchyma → Parenchyma → Collenchyma
D. Parenchyma → Sclerenchyma → Collenchyma
Answer: A
Q60. Which of the following is a correct NCERT example of a unicellular eukaryote?
A. Oscillatoria
B. Spirogyra
C. Amoeba
D. Fern
Answer: C
Q61. Which is a correct characteristic of the kingdom Monera?
A. Eukaryotic
B. Prokaryotic
C. Multicellular
D. Photosynthetic only
Answer: B
Q62. The primary difference between gymnosperms and angiosperms is:
A. Angiosperms produce flowers; gymnosperms do not
B. Gymnosperms produce flowers; angiosperms do not
C. Both produce flowers
D. Both are non-vascular
Answer: A
Q63. Which of the following represents an exception to the usual taxonomic grouping based on morphology?
A. Bacteria grouped by habitat
B. Protists grouped by reproduction
C. Fungi grouped by nutrition
D. Algae grouped by pigmentation and storage products
Answer: D
Q64. The term “hierarchy” in biological classification refers to:
A. Organisms arranged alphabetically
B. Organisms grouped from general to specific
C. Organisms grouped by habitat only
D. Organisms arranged by size
Answer: B
Q65. Which of the following is NOT a purpose of classification?
A. Understanding evolutionary relationships
B. Predicting characteristics of unknown species
C. Identifying organisms
D. Measuring metabolic rates
Answer: D