Summary

• Description:

  The PDF document comprises Arise and Shine Trial 2 Biology Paper 2 2026 Pre-Mock Exam with Marking Scheme. The marking scheme is in a different document.

  It was a KCSE Biology Paper 2 examination designed to test higher-order cognitive skills, data analysis, genetic crosses, and extended essay responses. This exam paper download is aligned with KCSE curriculum outcomes and top-tier SERP revision materials.

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

  It covers the following topics:

  • Section A:
    • Cell organelles, microscopic field-of-view length calculations, and microscope maintenance
    • Mineral ion absorption, aeration effects, and glucose concentration in root hairs
    • Sex-linked genetic disorders (haemophilia inheritance patterns and phenotypic ratio determination)
    • Root anatomy, root hair adaptations, and water movement pathways to xylem vessels
    • Animal behavioral responses (taxis in larvae) and plant growth tropisms (auxin distribution in shoots)
  • Section B:
    • Ecosystem population data analysis, pyramid of numbers construction, food webs, and quadrat sampling methodology
    • Evidence of organic evolution (comparative anatomy, paleontology, biogeography, comparative embryology, and biochemistry)
    • Structural adaptations of fruits and seeds to wind, water, animal, and explosive dispersal mechanisms
• File Size:

  446.77 KB
• Length:

  7 pages
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  BIOLOGY
• Posted By:

  Caleb_Peter

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