Summary

• Description:

  The PDF document comprises Topnotch Biology Paper 2 2026 Mock Exam with Marking Scheme. The marking scheme is in a different document.

  It was a KCSE Biology Paper 2 examination.

  An expert-level Biology theory exam testing analytical skills, experimental data interpretation, genetic pedigree analysis, and environmental biological concepts essential for top KCSE performance.

  • Month Administered: July 2026
  • Duration: 2 Hours
  • Total Marks: 80 Marks
  • Number of Questions: 8 questions
  • Structure: Section A (40 marks, questions 1-5) and Section B (40 marks, compulsory question 6 and choice of question 7 or 8)

  It covers the following topics:

  • Section A:
    • Transpiration rate factors and xerophytic stomatal adaptations
    • Sickle cell anaemia inheritance, genetics, and malaria prevalence
    • Osmosis experimental setups using visking tubing
    • Plant sexual reproduction, pollen tube growth, and parthenocarpy
    • Mammalian ball and socket joints, synovial fluid, and muscle types
  • Section B:
    • Diurnal carbon (IV) oxide consumption and release graphing
    • Compensation point determination and temperature effects on photosynthesis
    • Small intestine villi structural adaptations for absorption
    • Photosynthetic theory of stomatal opening and closing
    • Renal ultrafiltration mechanism and water pollution (causes, effects, control)
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  BIOLOGY
• Posted By:

  Caleb_Peter

Enter your details below to initiate a payment using MPESA.