Write the differences between:

Antigen and antibodies: Antigens are foreign substances that trigger an immune response, while antibodies are proteins produced by the immune system to neutralize antigens.

Variation and evolution: Variation refers to differences among individuals within a species, whereas evolution is the gradual change in species over generations due to variation and natural selection.

Discontinuous and continuous variation: Discontinuous variation shows distinct categories with no intermediates (e.g., blood groups), whereas continuous variation has a range of traits (e.g., height).

Natural and artificial selection: Natural selection is the survival of the fittest in nature, while artificial selection is the selective breeding of organisms by humans for desirable traits.

Related Questions:

  1. Write the differences between:
  2. Write the differences between:
  3. Name the structure through which the exchange of gases can take place in plants.
  4. Name the ways through which a plant can obtain oxygen.
  5. Why should one not sleep under a tree at night?
  6. Why would very wet soil be dangerous to plants
  7. Why do plants not need a specialized respiratory system?
  8. How does the exchange of gases take place in alveoli?
  9. What is the effect of exercise on the rate of breathing?
  10. Compare inspired air and expired air.
  11. How do viral infections like COVID-19 affect bronchi?
  12. What is the importance of breathing in fresh air?
  13. What is the importance of keeping the nasal and oral cavity clear?
  14. Differentiate between:
  15. Breathing through the nose is healthier than breathing by mouth. Why?
  16. What are the conditions necessary for efficient gaseous exchange between an organism and the environment?
  17. Describe the effects of cigarette smoking on the inner walls of the trachea of human beings.
  18. The diagram shows the percentage of gases in inspired and expired air.
  19. The figure shows a healthy lung and a diseased lung.
  20. The diagram shows the structural and functional unit of the lungs.