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Biodiversity in Biology Solved MCQs

 World of Biodiversity Solved MCQs

Biodiversity

1. Who is often credited with developing the first system of biological classification?

   a) Charles Darwin

   b) Carolus Linnaeus

   c) Gregor Mendel

   d) Charles Lyell


2. What is the term for the science of naming, defining, and classifying organisms?

   a) Taxonomy

   b) Genetics

   c) Ecology

   d) Evolution


3. Which of the following is the highest taxonomic rank in the Linnaean classification system?

   a) Species

   b) Genus

   c) Order

   d) Kingdom


4. The concept of "natural selection" in evolutionary theory was proposed by:

   a) Gregor Mendel

   b) Charles Darwin

   c) Jean-Baptiste Lamarck

   d) Alfred Russel Wallace


5. In the modern classification system, organisms are grouped based on their:

 a) Physical appearance only

 b) Genetic and evolutionary relationships

 c) Geographic distribution

 d) Habitat preferences


6. Which of the following domains includes organisms like bacteria and archaea?

   a) Eukarya

   b) Bacteria

   c) Archaea

   d) Prokarya


7. The process of classifying organisms into hierarchical groups is known as:

   a) Stratification

   b) Hierarchy

   c) Taxonomy

   d) Heterarchy


8. The system of binomial nomenclature introduced by Linnaeus uses which two levels of classification for species?

   a) Genus and phylum

   b) Family and order

   c) Genus and species

   d) Class and kingdom


9. Who developed the three-domain system of classification, which replaced the five-kingdom system?

   a) Charles Darwin

   b) Carl Woese

   c) Robert H. Whittaker

   d) Gregor Mendel


10. Which of the following is not a kingdom in the five-kingdom classification system?

    a) Plantae

    b) Animalia

    c) Protista

    d) Fungi

    e) Eubacteria


11. What is the primary characteristic of organisms in the kingdom Monera?

   a) Eukaryotic cells

   b) Multicellularity

   c) Prokaryotic cells

   d) Photosynthesis


12. Which of the following structures is typically found in Monera?

   a) Nucleus

   b) Mitochondria

   c) Cell wall

   d) Chloroplast


13. Monera includes which of the following types of organisms?

   a) Fungi

   b) Plants

   c) Bacteria

   d) Insects


14. What is the reproductive method commonly used by bacteria in the kingdom Monera?

   a) Binary fission

   b) Budding

   c) Sporulation

   d) Conjugation


15. Which of the following is not a characteristic of Monera?

   a) Unicellular

   b) Heterotrophic

   c) Autotrophic

   d) Prokaryotic


16. What is the role of pili in bacteria from the kingdom Monera?

   a) Respiration

   b) Locomotion

   c) DNA transfer

   d) Photosynthesis


17. Which of the following bacterial structures is responsible for motility?

   a) Capsule

   b) Flagella

   c) Nucleoid

   d) Plasmid


18. What is the function of the cell membrane in Monera?

   a) Energy production

   b) Support and protection

  c) Control of entry and exit of substances

   d) Photosynthesis


19. Which Moneran group can perform photosynthesis?

   a) Cyanobacteria

   b) Archaea

   c) Methanogens

   d) Halophiles


20. Which of the following is an example of a Moneran disease-causing bacterium?

    a) E. coli

    b) Saccharomyces cerevisiae

    c) Rhizobium

    d) Penicillium


21. Which of the following is not a characteristic of protists?

   a) Unicellular

   b) Eukaryotic

   c) Heterotrophic

   d) Photosynthetic


22. The kingdom Protista includes organisms that are primarily:

   a) Autotrophic

   b) Multicellular

   c) Prokaryotic

   d) Parasitic


23. Protists can be found in which of the following environments?

   a) Only freshwater

   b) Only marine

   c) Freshwater, marine, and terrestrial

   d) Only terrestrial


24. Which protist group is responsible for causing malaria?

   a) Algae

   b) Amoebas

   c) Apicomplexans

   d) Ciliates


25. Euglena is an example of a photosynthetic protist and belongs to which group?

   a) Algae

   b) Amoebas

   c) Apicomplexans

   d) Ciliates


26. What is the primary mode of locomotion in many protists?

   a) Flagella

   b) Cilia

   c) Pseudopods

   d) Spores


27. Which of the following is a characteristic of the dinoflagellates?

   a) Silica shells

   b) Calcium carbonate shells

   c) Two flagella

   d) No flagella


28. The protist group known for their intricate, glass-like shells are called:

   a) Ciliates

   b) Diatoms

   c) Dinoflagellates

   d) Amoebas


29. Trypanosoma is a protist responsible for which disease?

   a) Malaria

   b) Sleeping sickness

   c) Amoebiasis

   d) Giardiasis


30. Which protists are often used as bioindicators of water quality?

    a) Amoebas

    b) Ciliates

    c) Diatoms

    d) Trypanosomes


31. What is the primary mode of nutrition for fungi?

   a) Autotrophic

   b) Heterotrophic

   c) Mixotrophic

   d) Parasitic


32. Which of the following is a fungal cell wall component?

   a) Cellulose

   b) Chitin

   c) Peptidoglycan

   d) Starch


33. Fungi reproduce asexually through:

   a) Binary fission

   b) Mitosis

   c) Budding

   d) Meiosis


34. Which structure in fungi is responsible for sexual reproduction?

   a) Mycelium

   b) Sporangium

   c) Sporophyte

   d) Sporangiophore


35. What is the main function of fungal spores?

   a) Energy storage

   b) Reproduction

   c) Photosynthesis

   d) Respiration


36. Which of the following is a common example of a symbiotic relationship involving fungi?

   a) Lichen (fungus + algae)

   b) Coral (fungus + protists)

   c) Mycorrhiza (fungus + bacteria)

   d) Plasmodium (fungus + human)


37. Ringworm is a fungal infection that affects the:

   a) Nails

   b) Lungs

   c) Skin

   d) Liver


38. The fungal disease "ergotism" is associated with the consumption of contaminated:

   a) Meat

   b) Bread

   c) Milk

   d) Vegetables


39. What role do fungi play in the ecosystem as decomposers?

  a) They break down dead organic matter

  b) They produce oxygen

  c) They fix nitrogen in the soil

  d) They enhance plant growth


40. Penicillin, a widely used antibiotic, is derived from a fungus called:

    a) Aspergillus

    b) Candida

    c) Saccharomyces

    d) Rhizopus

    

41. What is the primary pigment responsible for photosynthesis in plants?

   a) Chlorophyll

   b) Carotene

   c) Xanthophyll

   d) Anthocyanin


42. Which of the following is not a vascular tissue in plants?

   a) Xylem

   b) Phloem

   c) Parenchyma

   d) Cambium


43. What is the function of stomata in plant leaves?

   a) Gas exchange (e.g., CO2 and O2)

   b) Photosynthesis

   c) Water absorption

   d) Nutrient transport

   

44. Which plant hormone is responsible for promoting cell elongation and bending toward light (phototropism)?

   a) Auxin

   b) Gibberellin

   c) Cytokinin

   d) Abscisic acid 


45. What is the primary function of roots in a plant?

a) Photosynthesis

b) Transpiration

c) Anchoring and absorbing water and nutrients

d) Reproduction

   

46. In which group of plants can you find non-vascular, seedless plants?

   a) Gymnosperms

   b) Angiosperms

   c) Bryophytes

   d) Pteridophytes


47. What is the process by which plants produce their own food through the conversion of light energy into chemical energy?

   a) Respiration

   b) Transpiration

   c) Photosynthesis

   d) Germination


48. Which of the following is a carnivorous plant that captures insects to supplement its nutrient intake?

   a) Venus flytrap

   b) Cactus

   c) Sunflower

   d) Oak tree  


49. Which structure in a flower contains the female reproductive organs?

   a) Stamen

   b) Petal

   c) Pistil

   d) Sepal


50. What is the term for the process of shedding leaves, typical in deciduous trees?

    a) Evergreen

    b) Defoliation

    c) Leaf senescence

    d) Deciduous


51. Which of the following is a characteristic feature of animals in the kingdom Animalia?

   a) Autotrophic nutrition

   b) Cell walls made of cellulose

   c) Heterotrophic nutrition

   d) Chlorophyll for photosynthesis


52. What is the primary criterion for classifying organisms into the kingdom Animalia?

   a) Presence of a backbone

   b) Presence of chlorophyll

   c) Mode of reproduction

   d) Type of locomotion


53. Which phylum do insects belong to?

   a) Chordata

   b) Arthropoda

   c) Mollusca

   d) Annelida 


54. The largest phylum within the kingdom Animalia is:

   a) Chordata

   b) Porifera

   c) Platyhelminthes

   d) Arthropoda


55. Which of the following is not a characteristic of animals in the kingdom Animalia?

   a) Multicellular

   b) Eukaryotic

   c) Reproduce by spores

   d) Lack of cell walls


56. What is the scientific name for the study of animals?

   a) Botany

   b) Zoology

   c) Entomology

   d) Herpetology


57. Animals that have a notochord at some stage in their development belong to the phylum:

   a) Arthropoda

   b) Chordata

   c) Mollusca

   d) Annelida


58. Which class do birds belong to within the phylum Chordata?

   a) Mammalia

   b) Aves

   c) Reptilia

   d) Amphibia


59. The exoskeleton of arthropods is primarily composed of:

   a) Calcium carbonate

   b) Chitin

   c) Keratin

   d) Collagen


60. Which phylum includes organisms known as "segmented worms"?

    a) Annelida

    b) Platyhelminthes

    c) Nematoda

    d) Cnidaria

  

61. What is Binomial Nomenclature?

 a) A naming system for planets

 b) A naming system for living organisms

c) A system for naming chemical compounds

d) A system for naming geological formations


62. Who is credited with developing Binomial Nomenclature?

   a) Charles Darwin

   b) Carl Linnaeus

   c) Gregor Mendel

   d) Louis Pasteur


63. In Binomial Nomenclature, each species is given a two-part name. What are these two parts called?

   a) Genus and Kingdom

   b) Family and Phylum

   c) Genus and Species

   d) Order and Class


64. Which part of the binomial name is always capitalized?

   a) Genus

   b) Species

   c) Both genus and species

   d) Neither genus nor species


65. What is the primary purpose of Binomial Nomenclature?

a) To make scientific names easier to pronounce

b) To provide a common language for naming organisms

c) To classify organisms into their evolutionary groups

 d) To confuse scientists with complex names


66. Which of the following is an example of a correct binomial name?

   a) Canis lupus

   b) Wolf

   c) Dog species

   d) Canis domesticus


67. What is the primary cause of deforestation?

   a) Pollution

   b) Urbanization

   c) Logging and clearing of forests

   d) Climate change


68. Which term refers to species that are at a high risk of becoming extinct in the near future?

   a) Endangered

   b) Extinct

   c) Invasive

   d) Native


69. Which of the following is an example of an endangered species?

   a) Bald Eagle

   b) Domestic Cat

   c) Common Rat

   d) House Sparrow


70. Which category includes species that have completely disappeared from the Earth?

   a) Endangered

   b) Extinct

   c) Vulnerable

   d) Critically Endangered


71. The conservation of biodiversity aims to:

   a) Increase the rate of extinction

   b) Reduce the number of protected areas

   c) Preserve the variety of life on Earth

   d) Promote deforestation


72. What is the main consequence of deforestation on biodiversity?

   a) Increased species diversity

   b) Loss of habitat and species

   c) Accelerated evolution

   d) Enhanced conservation efforts


83. Which organization plays a significant role in the protection and conservation of endangered species?

a) WWF (World Wildlife Fund)

b) NASA (National Aeronautics and Space Administration)

c) UNESCO (United Nations Educational, Scientific and Cultural Organization)

d) FIFA (Fédération Internationale de Football Association)


74. Which law in the United States is aimed at protecting endangered and threatened species?

   a) Clean Air Act

   b) Endangered Species Act

   c) National Park Service Act

   d) Food, Drug, and Cosmetic Act

75. Which organization maintains the Red List, a database of threatened species?

a) Greenpeace

b) World Wildlife Fund (WWF)

c) International Union for Conservation of Nature (IUCN)

d) United Nations Environmental Programme (UNEP)


Also Read the Following Suggested Topics for Further Reading

1. Laws of Inheritance in Biology Solved MCQs

2. Nutrition in Plants Solved MCQs

3. Bioenergetics in Plants Solved MCQs

4. Respiration in Plants and Animals Solved MCQs

5. Reproduction in Plants and Animals Solved MCQs

6. Animal and Plant Cell Solved MCQs

7. Biology in General Solved MCQs

8. Virus and Bacteria Solved MCQs


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