BIOLOGY ESSAY QUESTIONS ON ADAPTATION

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  1. Describe how the mammalian heart is ADAPTED to its function                 (20mks)
  2. Explain how predators are ADAPTED to capture their prey. 14mks
  3. Describe how hydrophytes are ADAPTED to living in areas with abundant water.(8mks)
  4. Describe the ADAPTATIONs of seeds and fruits to dispersal.   20mks
  5. Describe how the xerophytes are ADAPTED to their habitats.        20mks
  6. Describe how the mammalian skin is ADAPTED to its functions.             ( 20mks)
  7. Describe how a male reproductive system is ADAPTED to its functions. 20mks
  8. Describe the ADAPTATIONs of wind pollinated flowers. (20mks)
  9. Describe how herbivorous mammals are ADAPTED to their mode of feeding. (16mks)
  10. Explain the ADAPTATIONs of respiratory surfaces to their functions. (10 marks)
  11. Explain how a body fish is ADAPTED for movement in its habitat.               (20mks)
  12. Describe how different types of tropisms ADAPT plants for survival in their habitats.      (20mks)
  13. Explain how the mammalian kidney is ADAPTED to its functions. (17 mks)Describe how insect pollinated flowers are ADAPTED to pollination. (14 mks)
  14. How is the gaseous exchange system of a mammal ADAPTED to perform its functions? (20mks)
  15. Describe the various ways in which seeds and fruits are ADAPTED for dispersal.    (20mks)
  16. 1Describe how the mammalian ear is ADAPTED to perform its functions.         (20mks)    
  17. Describe how small intestines are ADAPTED for its functions. (20 mks)
  18. Describe how the mammalian eye is ADAPTED to perform its functions.        (20mks)    
  19. Describe how desert plants are ADAPTED to conserve water. (12mks)
  20. Describe the ADAPTATIONS of the mammalian blood. (17mks)
  21. Explain how the leaf is ADAPTED to photosynthesis
  22. Describe the ADAPTATIONS of various types of teeth in mammals to their feeding habits
  23. Describe the ADAPTATIONS of the structures of the mammalian (human)
  24. (b) Describe the ADAPTATIONS of the structure of the root, root hair cell, xylem and phloem to their functions
  25. Describe the ADAPTATIONS of the internal structure of the leaf to transpiration
  26. Describe the ADAPTATIONS of the structure of  the blood vessels to their functions
  27. Describe the ADAPTATIONS of various types of respiratory structures in animals to their functions
  28.  Describe the ADAPTATIONS of the structures of the human  lungs, and liver  to their functions
  29. Describe the ADAPTATIONS of seeds & fruits to method of dispersal.
  30. Describe the ADAPTATIONS of the structure of the human male & female reproductive system to functions
  31. Describe the ADAPTATIONS of the structure of the mammalian nervous system to its functions
  32. Describe the ADAPTATIONS of the structure to function of the human ear and eye
  33. Describe the evidence of organic evolution                 (20mks)
  34. a) Explain how various environmental factors increase the rate of transpiration (16 mks) b) What is the significance of transpiration to plants (4 mks)
  35. a) Name two processes by which flowering plants excrete products, and for each process, state two waste products that are eliminated. (6 mks) b) Explain the roles of the(i) Liver(ii) Kidneys in eliminating excess amino acids from the human body.(14 mks)
  36. Describe the structure and function of various parts of the mammalian skin.(20 mks)
  37. (a)In Britain, it is observed that there are two varieties of a moth species (Briston betulania). These are the light coloured peppered moth and the melanic form (dark coloured). It is observed that the light coloured moth is at high population in the forest land while the melanic form was at high population near industries. Explain the evolution principle behind the above observation.(16 mks) b) State and explain the principles of Lamarck’s theory of evolution. (4 mks) 
  38. b) Explain how digestion of various food substances takes place in the duodenum. (8 mks)
  39. Describe the importance of a balanced diet in children. (20mks)
  40. (a)(i) Lamarck’s theory of evolution has been rejected by scientists today. Explain. (2 mks)(ii) Explain the meaning of the term “Survival of the fittest.” (3 mks)b) Describe the various evidences which show that organic evolution has taken place.(15 mks)
  41. (a) What is the role of the Gibberellins in plant growth and development.           (5mks) (b) List down the characteristics features of the meristematic cells in a plant.     (5mks)(c) Explain the effects of unidirectional light on growth, in a seedling.      (10mks)
  42. Describe how excretion takes place in the mammalian kidneys?   (20 marks)
  43. Describe the digestion of egg albumen from the time of ingestion to the time it is assimilated in the body cells. (20mks)
  44. Describe the evidences that support the theory of organic evolution.      (20mks)
  45. a) Differentiate between Homologous and Analogous structures. (4 mks)
  46. b) Describe how natural selection brings about ADAPTATION of a species to its environment (18 mks)
  47. Describe the role of hormones in the human menstrual cycle (20 mks)
  48. b) Explain how a seed is formed in a flowering plant. (6 mks)
  49. a) What is meant by natural selection (3 Marks) Describe the various evidences which show that organic evolution has taken place. (17 mks)


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