Summary

• Description:

  The PDF document comprises Bungoma South Cluster Biology Paper 2 2026 Pre-Mock Exam with Answers (Marking Scheme). The marking scheme is in a different document.

  It was a KCSE Form 4 Biology Paper 2 examination.

  This assessment features in-depth data interpretation, experimental analysis, genetic pedigrees, and extended essay responses in biological sciences. It rigorously tests learners' analytical inquiry, graphical representation, and descriptive scientific proficiency.

  • Month Administered: July 2026
  • Duration: 2 Hours
  • Total Marks: 80 Marks
  • Number of Questions: 8 Questions
  • Structure: Divided into Section A (40 marks, questions 1–5 compulsory) and Section B (40 marks, question 6 compulsory data/graph analysis, plus one essay chosen from question 7 or 8).

  It covers the following topics:

  • Section A:
    • Circulatory system: blood cell dynamics, carbon monoxide poisoning, blood screening, and blood group compatibility
    • Respirometry: experimental measurement of respiration rates in insects, role of potassium hydroxide/soda lime, and human energy requirements
    • Genetics: Mendelian monohybrid crosses, complete dominance, and phenotypic ratio determinations
    • Sensory reception: pupillary light reflex mechanism and iris muscle coordination
    • Locomotion and support: mammalian forelimb skeletal structure, joints, antagonistic muscles, and strengthening tissues in plant stems
  • Section B:
    • Photosynthesis: effect of light intensity on gas evolution in aquatic plants (data plotting and curve analysis), starch testing, dry mass determination, and chloroplast adaptations
    • Gaseous exchange: structural characteristics of respiratory surfaces and functional adaptations of mammalian lungs
    • Plant growth and development: essential conditions for seed germination and physiological roles of auxins and gibberellins
• File Size:

  682.66 KB
• Length:

  10 pages
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  BIOLOGY
• Posted By:

  Caleb_Peter

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