Summary

• Description:

  The MS Word document comprises CROSS COUNTY Biology Paper 2 2026 Mock Exam with Answers (Marking Scheme). The PDF version is also available upon your request. The marking scheme is in a different document.

  It was a KCSE Biology Paper 2 examination.

  This theory assessment challenges candidates on higher-order analytical reasoning, biological problem-solving, physiological data interpretation, and detailed expository accounts of anatomical systems. It emphasizes experimental evaluation of enzymes, human genetics, osmoregulation, and plant reproduction.

  • Month Administered: April/May 2026
  • Duration: 2 Hours
  • Total Marks: 80
  • Number of Questions: 8 (Questions 1 - 8)
  • Structure: Section A (40 marks, five compulsory structured questions 1-5) and Section B (40 marks, compulsory data analysis Question 6 for 20 marks, and one 20-mark essay chosen between Question 7 and Question 8).

  It covers the following topics:

  • Section A
    • Respiratory physiology: mammalian lung anatomy, pleural membrane function, and tracheal cartilage support
    • Enzymology: catalase activity, hydrogen peroxide detoxification, and temperature effects on pepsin digestion
    • Excretion and homeostasis: diabetes mellitus etiology and antidiuretic hormone (ADH) osmoregulatory functions
    • Genetics: ABO blood group inheritance, sex linkage, sex chromosomes, and agricultural breeding applications
    • Plant histology and nutrition: non-photosynthetic tissues and herbivore dental pad adaptations
    • Plant water relations: root hair structure, cellular pathway of water uptake, and active uptake of mineral salts
  • Section B
    • Data analysis and graphing: comparative mammalian blood glucose curves, endocrine pancreatic dysfunction, and diabetes diagnostics
    • Plant reproduction: microsporogenesis, double fertilization, pollen tube pathways, and endosperm formation
    • Seed and fruit dispersal mechanisms: morphological adaptations for water dispersal
    • Animal nutrition: structural adaptations of the ileum and human small intestine
    • Metabolic homeostasis: homeostatic functions of the liver in carbohydrate metabolism and blood glucose stabilization
• File Size:

  1.17 MB
• Length:

  10 pages
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  Biology
• Posted By:

  Caleb_Peter

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