Biology – Multiple Choice Questions (MCQs)

1. 37. What is taxonomy?

   • A. The science of classifying living organisms
   • B. The study of fossils
   • C. The study of animal behavior
   • D. The study of plant diseases

2. 38. What are the major levels of biological classification (in order)?

   • A. Kingdom
   • B. Phylum
   • C. Class
   • D. Order

3. 39. What are the five kingdoms of life?

   • A. Animals
   • B. plants
   • C. fungi
   • D. protists

4. 40. What are vertebrates?

   • A. Animals with a backbone
   • B. Animals without a backbone
   • C. Plants with flowers
   • D. Single-celled organisms

5. 41. What are invertebrates?

   • A. Animals with a backbone
   • B. Animals without a backbone
   • C. Plants without flowers
   • D. Multicellular organisms

6. 42. What is ecology?

   • A. The study of individual organisms
   • B. The study of interactions between organisms and their environment
   • C. The study of cells and tissues
   • D. The study of the history of life on Earth

7. 43. What is an ecosystem?

   • A. A community of interacting organisms and their physical environment
   • B. A single organism and its habitat
   • C. A group of organisms of the same species
   • D. A collection of different species in isolation

8. 44. What is a food chain?

   • A. A linear sequence of organisms where nutrients and energy are transferred from one organism to another
   • B. A complex network of feeding relationships
   • C. The decomposition of dead organisms
   • D. The flow of water in an ecosystem

9. 45. What is a food web?

   • A. A linear sequence of organisms
   • B. A complex network of interconnected food chains in an ecological community
   • C. The process of photosynthesis
   • D. The cycling of nutrients

10. 46. What are producers?

    • A. Organisms that produce their own food
    • B. Organisms that consume other organisms
    • C. Organisms that decompose dead organic matter
    • D. Non-living components of an ecosystem

11. 47. What are consumers?

    • A. Organisms that produce their own food
    • B. Organisms that obtain energy by feeding on other organisms
    • C. Organisms that break down dead organic matter
    • D. Abiotic factors in an ecosystem

12. 48. What are decomposers?

    • A. Organisms that produce their own food
    • B. Organisms that consume living organisms
    • C. Organisms that break down dead organic matter
    • D. Primary consumers