class 9 biology chapter 2 mcq's

 50 MCQs for Chapter 2: Biodiversity 

1. What is biodiversity?
a) Study of ecosystems
b) Variety of life on Earth
c) Science of classification
d) Only study of plants
Sol: (b) Variety of life on Earth

2. Which branch of biology deals with the classification of organisms?
a) Morphology
b) Ecology
c) Taxonomy
d) Genetics
Sol: (c) Taxonomy

3. Who is known as the father of taxonomy?
a) Charles Darwin
b) Gregor Mendel
c) Aristotle
d) Carolus Linnaeus
Sol: (d) Carolus Linnaeus

4. The system introduced by Linnaeus for naming organisms is called
a) Binary code
b) Scientific naming
c) Binomial nomenclature
d) Biodiversity classification
Sol: (c) Binomial nomenclature

5. In binomial nomenclature, the first part of the name represents:
a) Species
b) Order
c) Family
d) Genus
Sol: (d) Genus

6. In binomial nomenclature, the second part represents:
a) Class
b) Phylum
c) Species
d) Kingdom
Sol: (c) Species

7. The correct way to write the scientific name of humans is
a) Homo Sapiens
b) Homo sapiens
c) homo Sapiens
d) Homo Sapiens
Sol: (b) Homo sapiens

8. What is the largest group in the classification system?
a) Class
b) Order
c) Kingdom
d) Family
Sol: (c) Kingdom

9. Which kingdom includes multicellular, autotrophic organisms?
a) Animalia
b) Fungi
c) Protista
d) Plantae
Sol: (d) Plantae

10. Fungi obtain their nutrition by:
a) Photosynthesis
b) Ingesting food
c) Absorbing nutrients
d) Hunting other organisms
Sol: (c) Absorbing nutrients

11. Which kingdom includes single-celled organisms with a nucleus?
a) Monera
b) Protista
c) Plantae
d) Animalia
Sol: (b) Protista

12. The kingdom Monera includes:
a) Viruses
b) Bacteria
c) Amoeba
d) Paramecium
Sol: (b) Bacteria

13. Which one is NOT a level of biological classification?
a) Genus
b) Species
c) Community
d) Kingdom
Sol: (c) Community

14. Which of these is the correct order of classification from largest to smallest?
a) Kingdom > Order > Class > Species
b) Kingdom > Phylum > Class > Order > Family > Genus > Species
c) Species > Genus > Family > Order
d) Kingdom > Class > Phylum > Species
Sol: (b) Kingdom > Phylum > Class > Order > Family > Genus > Species

15. Which of these organisms is unicellular?
a) Mango tree
b) Amoeba
c) Earthworm
d) Butterfly
Sol: (b) Amoeba

16. What is the basic unit of classification?
a) Family
b) Genus
c) Order
d) Species
Sol: (d) Species

17. Which scientist first divided organisms into two main groups: plants and animals?
a) Linnaeus
b) Darwin
c) Aristotle
d) Mendel
Sol: (c) Aristotle

18. Which group of organisms can live in extreme environments?
a) Protists
b) Fungi
c) Archaebacteria
d) Algae
Sol: (c) Archaebacteria

19. Which kingdom has organisms without a nucleus?
a) Protista
b) Monera
c) Animalia
d) Plantae
Sol: (b) Monera

20. A group of similar organisms capable of interbreeding is called a:
a) Family
b) Genus
c) Species
d) Class
Sol: (c) Species

21. Which group includes mushrooms and molds?
a) Plantae
b) Animalia
c) Fungi
d) Protista
Sol: (c) Fungi

22. Which of the following is an example of binomial nomenclature?
a) Human being
b) Mango tree
c) Homo sapiens
d) Rose flower
Sol: (c) Homo sapiens

23. Which characteristic is common to all animals?
a) Photosynthesis
b) Cell wall
c) Multicellular and heterotrophic
d) Autotrophic
Sol: (c) Multicellular and heterotrophic

24. Which of the following organisms belongs to Kingdom Protista?
a) E. coli
b) Hydra
c) Amoeba
d) Yeast
Sol: (c) Amoeba

25. In which kingdom do we place multicellular heterotrophic organisms without cell walls?
a) Plantae
b) Fungi
c) Animalia
d) Monera
Sol: (c) Animalia

26. Which kingdom includes algae?
a) Plantae
b) Monera
c) Protista
d) Fungi
Sol: (c) Protista

27. What is the scientific name of the mango plant?
a) Rosa indica
b) Mangifera indica
c) Musa paradisiaca
d) Brassica campestris
Sol: (b) Mangifera indica

28. Which one is not included in the five-kingdom classification?
a) Plantae
b) Virus
c) Protista
d) Fungi
Sol: (b) Virus

29. Which of the following has a cell wall made of chitin?
a) Animalia
b) Protista
c) Fungi
d) Plantae
Sol: (c) Fungi

30. The term “species” refers to:
a) A group of different organisms
b) Group of organisms that can interbreed
c) Class of organisms
d) Unrelated organisms
Sol: (b) Group of organisms that can interbreed

31. Which of the following groups has the least diversity?
a) Genus
b) Species
c) Family
d) Class
Sol: (b) Species

32. Which classification level comes after Class?
a) Order
b) Kingdom
c) Phylum
d) Genus
Sol: (a) Order

33. Which of these groups includes bacteria?
a) Protista
b) Monera
c) Fungi
d) Animalia
Sol: (b) Monera

34. Organisms in Monera are
a) Eukaryotic
b) Multicellular
c) Prokaryotic
d) None of these
Sol: (c) Prokaryotic

35. Who proposed the five-kingdom classification?
a) Linnaeus
b) Whittaker
c) Mendel
d) Darwin
Sol: (b) Whittaker

36. Which of the following kingdoms includes autotrophs and heterotrophs?
a) Protista
b) Fungi
c) Monera
d) All of the above
Sol: (d) All of the above

37. A group of similar genera forms a:
a) Family
b) Species
c) Class
d) Order
Sol: (a) Family

38. Which of these is an autotrophic organism?
a) Amoeba
b) Paramecium
c) Spirogyra
d) Yeast
Sol: (c) Spirogyra

39. What is the function of taxonomy?
a) Growth of plants
b) Digestion of food
c) Classification and naming of organisms
d) Reproduction in animals
Sol: (c) Classification and naming of organisms

40. Scientific names are written in:
a) English
b) Latin
c) Greek
d) Spanish
Sol: (b) Latin

41. Which kingdom has the most complex organisms?
a) Monera
b) Protista
c) Animalia
d) Fungi
Sol: (c) Animalia

42. Which of these organisms is NOT included in Plantae?
a) Algae
b) Moss
c) Fern
d) Fungi
Sol: (d) Fungi

43. Which taxonomic category is broader than genus?
a) Family
b) Order
c) Class
d) All of the above
Sol: (d) All of the above

44. Which group includes both unicellular and multicellular organisms?
a) Protista
b) Fungi
c) Monera
d) All of the above
Sol: (d) All of the above

45. Which is a correct pair?
a) Homo—species
b) sapiens—genus
c) sapiens—species
d) Homo-family
Sol: (c) sapiens—species

46. Viruses are considered living because they:
a) Reproduce independently
b) Have cell walls
c) Can grow on their own
d) Reproduce inside host cells
Sol: (d) Reproduce inside host cells

47. Which taxon includes the greatest number of different types of organisms?
a) Class
b) Genus
c) Kingdom
d) Order
Sol: (c) Kingdom

48. An organism made of only one cell is called:
a) Multicellular
b) Eukaryotic
c) Unicellular
d) Colonial
Sol: (c) Unicellular

49. Which of the following is NOT a characteristic of fungi?
a) Cell wall
b) Chlorophyll
c) Eukaryotic
d) Absorptive nutrition
Sol: (b) Chlorophyll

50. A group of organisms that can produce fertile offspring is a:
a) Genus
b) Species
c) Kingdom
d) Class
Sol: (b) Species