Summary

• Description:

  The PDF document comprises Alliance Boys High School Biology Paper 1 2024 Mock Exam with Answers (Marking Scheme). The marking scheme is towards the end of the document.

  It is a KCSE Biology Paper 1 (Theory) mock examination.

  • Duration: 2 Hours
  • Total Marks: 80
  • Number of Questions: 29 (Questions 1–29)

  It covered the following topics:

  • Metamorphosis and its biological significance in insects
  • Plant classification and structure, including functions of plant parts
  • Functions of the exoskeleton in arthropods
  • Comparative embryology and evidence for evolution
  • Types of flowers such as hypogynous flowers and reproductive adaptations
  • Pollination mechanisms including wind and insect pollination
  • Bile salts and their role in fat emulsification
  • Differences between Gymnosperms and Angiosperms
  • Heart protection mechanisms and causes of arteriosclerosis
  • Adaptations of hydrophytes including aerenchyma tissue
  • Ecological concepts such as habitat and ecological niche
  • Types of genetic mutations and DNA changes
  • Respiratory gas exchange and oxygenation of blood
  • Nerve transmission and effects of myelin sheath damage
  • Microscope magnification and specimen observation
  • Human endocrine system and hormonal feedback mechanisms
  • Functions of the retina in vision
  • Functions of cartilage in the vertebral column
  • Cell organelles including lysosomes and Golgi apparatus
  • Osmosis, plasmolysis, and plant cell responses in different salt concentrations
  • Kidney structure and osmoregulation
  • Hormonal regulation including insulin and antidiuretic hormone
  • Transpiration and environmental factors affecting its rate
  • Leaf internal structure and functions of tissues
  • Differences between breathing and respiration
  • Anaerobic respiration and its effects in plant roots
  • Adaptations of bony fish including swim bladder and body structure
  • Streamlining and features reducing resistance in water
  • Protective mechanisms of the human eye
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  BIOLOGY

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