Summary

• Description:

  The PDF document comprises KALA Joint Trials 2024 Biology Paper 3 Exam with Answers and Marking Scheme. The marking scheme is in a different document.

  It was a KCSE Biology Paper 3 (231/3) Joint Mock examination administered in July 2024.

  • Duration: 1 Hour 45 Minutes
  • Total Marks: 40
  • Number of Questions: 3 (Questions 1–3)

  The paper consisted of practical-based questions assessing biological investigations, specimen identification, experimental procedures, and interpretation of observations.

  It covered the following topics:

  • Biological practical investigations using animal specimens
  • Enzyme activity experiments involving hydrogen peroxide and biological tissues
  • Effects of heat on enzyme activity using fresh and boiled specimens
  • Functions and storage roles of internal organs in digestion
  • Identification and classification of mammalian skeletal specimens
  • Structure and drawing of bones from mammalian skeletons
  • Adaptations of bones to their functions in the body
  • Types of joints found in the mammalian skeletal system
  • Muscles involved in breathing and rib movement during inhalation and exhalation
  • Identification of plant organs using plant specimens and photographs
  • Plant reproduction and development of plant structures
  • Agents of seed or fruit dispersal and structural adaptations for dispersal
  • Plant tissue experiments using epidermal strips
  • Osmosis and cell turgidity investigations using plant tissues in different solutions
  • Relationship between cell turgidity and photosynthesis in leaves
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  BIOLOGY

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