1. Biodiversity refers to the:
A) Number of rocks on Earth
B) Variety of living organisms on Earth
C) Amount of oxygen in air
D) Number of planets in space
2. The science of naming and classifying organisms is called:
A) Taxonomy
B) Ecology
C) Genetics
D) Physiology
3. Carolus Linnaeus is famous for introducing:
A) Cell theory
B) Theory of evolution
C) Germ theory
D) Binomial nomenclature
4. In binomial nomenclature, the first word represents the:
A) Family
B) Species
C) Genus
D) Kingdom
5. The scientific name of human beings is:
A) Pan troglodytes
B) Homo sapiens
C) Felis catus
D) Mangifera indica
6. Which kingdom includes bacteria?
A) Monera
B) Protista
C) Fungi
D) Plantae
7. Mushrooms belong to the kingdom:
A) Monera
B) Animalia
C) Protista
D) Fungi
8. Green plants are placed in the kingdom:
A) Protista
B) Monera
C) Plantae
D) Animalia
9. Animals are members of the kingdom:
A) Protista
B) Animalia
C) Fungi
D) Monera
10. Biodiversity is important because it:
A) Maintains ecological balance
B) Reduces rainfall
C) Prevents evolution
D) Eliminates competition
11. Which kingdom contains mostly unicellular eukaryotes?
A) Plantae
B) Animalia
C) Fungi
D) Protista
12. The smallest taxonomic category is:
A) Kingdom
B) Phylum
C) Species
D) Class
13. Which taxonomic rank comes immediately above species?
A) Family
B) Genus
C) Order
D) Class
14. The main purpose of biological classification is to:
A) Organize organisms into groups based on similarities
B) Count organisms only
C) Increase mutations
D) Eliminate species
15. Which of the following belongs to the kingdom Animalia?
A) Yeast
B) Amoeba
C) Moss
D) Cat
16. Scientific names are generally written in:
A) Capital letters only
B) Bold letters only
C) Italics or underlined when handwritten
D) Red ink only
17. Which kingdom includes multicellular organisms that make their own food by photosynthesis?
A) Fungi
B) Plantae
C) Animalia
D) Monera
18. Which of the following is the correct sequence of taxonomic categories from higher to lower?
A) Kingdom → Phylum → Class → Order → Family → Genus → Species
B) Species → Genus → Family → Order → Class → Phylum → Kingdom
C) Kingdom → Class → Phylum → Family → Order → Species → Genus
D) Phylum → Kingdom → Class → Genus → Family → Order → Species
19. The five-kingdom classification system was proposed by:
A) Carolus Linnaeus
B) Charles Darwin
C) Robert H. Whittaker
D) Gregor Mendel
20. Organisms placed in the same species are able to:
A) Live in different habitats only
B) Interbreed and produce fertile offspring
C) Belong to different kingdoms
D) Have different numbers of chromosomes only
21. Which kingdom contains organisms that lack a true nucleus?
A) Protista
B) Fungi
C) Plantae
D) Monera
22. Amoeba is classified under the kingdom:
A) Protista
B) Monera
C) Plantae
D) Animalia
23. The scientific name of mango is:
A) Malus domestica
B) Oryza sativa
C) Mangifera indica
D) Triticum aestivum
24. Biodiversity helps ecosystems become more:
A) Fragile
B) Stable and resilient
C) Polluted
D) Artificial
25. Which kingdom includes organisms with cell walls made of chitin?
A) Fungi
B) Plantae
C) Animalia
D) Protista
26. Which of the following is NOT a member of kingdom Plantae?
A) Fern
B) Pine
C) Sunflower
D) Mushroom
27. The genus name in a scientific name begins with a:
A) Small letter
B) Number
C) Capital letter
D) Greek symbol
28. Which characteristic is common to all animals?
A) They make their own food.
B) They are heterotrophic.
C) They have cell walls.
D) They contain chlorophyll.
29. The taxonomic rank above family is:
A) Species
B) Genus
C) Kingdom
D) Order
30. Which kingdom contains organisms that absorb nutrients from organic matter?
A) Fungi
B) Animalia
C) Plantae
D) Monera
31. Which of the following is an example of biodiversity conservation?
A) Deforestation
B) Habitat destruction
C) Establishing wildlife sanctuaries
D) Excessive hunting
32. Which kingdom contains both unicellular and simple multicellular eukaryotes?
A) Animalia
B) Protista
C) Plantae
D) Monera
33. Which of the following is correctly written according to binomial nomenclature?
A) homo Sapiens
B) HOMO SAPIENS
C) Homo Sapiens
D) Homo sapiens
34. The primary aim of taxonomy is to:
A) Identify, name, and classify organisms
B) Measure environmental pollution
C) Study weather patterns
D) Analyze human diseases only
35. Which of the following is a prokaryotic organism?
A) Amoeba
B) Yeast
C) Bacterium
D) Paramecium
36. Which kingdom includes organisms that are exclusively multicellular and autotrophic?
A) Plantae
B) Monera
C) Protista
D) Fungi
37. Which kingdom contains organisms that obtain food by ingestion?
A) Fungi
B) Monera
C) Plantae
D) Animalia
38. Which taxonomic category is broader than class but narrower than kingdom?
A) Family
B) Phylum
C) Genus
D) Species
39. Conservation of biodiversity helps to:
A) Preserve ecosystems and natural resources
B) Increase pollution
C) Eliminate endangered species
D) Reduce ecological stability
40. Which one of the following belongs to kingdom Protista?
A) Mushroom
B) Moss
C) Euglena
D) Earthworm
41. In the scientific name Felis catus, the word catus indicates the:
A) Genus
B) Species
C) Family
D) Order
42. Which of the following is NOT a characteristic used in biological classification?
A) Cell structure
B) Mode of nutrition
C) Reproductive features
D) Favorite habitat of humans
43. Which kingdom includes organisms such as blue-green algae (cyanobacteria)?
A) Monera
B) Protista
C) Plantae
D) Fungi
44. Which level of classification contains closely related genera?
A) Order
B) Class
C) Family
D) Kingdom
45. The use of scientific names avoids confusion caused by:
A) Cell division
B) Different local and common names
C) Genetic variation
D) Climate change
46. Which kingdom is composed entirely of heterotrophic organisms without cell walls?
A) Animalia
B) Plantae
C) Monera
D) Fungi
47. Which taxonomic rank is immediately below order?
A) Class
B) Phylum
C) Kingdom
D) Family
48. Biodiversity is threatened by:
A) Wildlife conservation
B) National parks
C) Habitat destruction and pollution
D) Sustainable resource management
49. Which of the following is an advantage of classification?
A) It increases extinction rates.
B) It makes identification and study of organisms easier.
C) It eliminates biodiversity.
D) It changes scientific names frequently.
50. The main objective of Chapter 3 “Biodiversity” is to help students understand:
A) Human physiology only
B) Cell division only
C) Enzyme activity only
D) The variety of living organisms, biological classification, taxonomy, binomial nomenclature, kingdoms, and the importance of conserving biodiversity