Summary

• Description:

  The PDF document comprises Friends School Kamusinga Kimilili Biology Paper 1 2026 Mock Exam with Answers (Marking Scheme). The marking scheme is in a different document.

  It was a KCSE Biology 231/1 examination.

  This theory paper comprehensively assesses fundamental biological principles including cytology, physiological processes, mammalian and plant anatomy, genetics, ecology, and taxonomy. It is designed to evaluate candidates' rapid recall and analytical mastery of high school biology concepts.

  • Duration: 2 Hours
  • Total Marks: 80
  • Number of Questions: 27 (Questions 1 – 27)
  • Structure: The paper consists of a single section containing 27 compulsory structured and short-answer questions.

  It covers the following topics:

  • Specimen collection precautions and biological conservation
  • Molecular genetics: roles of DNA and types of genetic variation
  • Cytology: plant cell organelles, chloroplast distribution, cell sap functions, and organelle roles (ribosomes, mitochondria)
  • Respiration: anaerobic respiration products and respiratory quotient (RQ) calculations
  • Digestive system: homodont vs. heterodont dentition, carnassial teeth, dental formula, and human tooth anatomy
  • Plant anatomy and transport: xylem structural adaptations
  • Photosynthesis: light stage end-products and testing starch in variegated leaves
  • Animal transport and homeostasis: insect hemolymph characteristics, ABO blood grouping system, vein adaptations, and circulatory disorders
  • Endocrine control: blood glucose regulation, diabetes insipidus, and menstrual cycle hormones
  • Excretion and thermoregulation: comparative excretion (plants vs. animals) and immediate physiological responses to cold
  • Taxonomy and classification: classification of Pisces and Arthropoda (Class Insecta), metamorphosis types, and branches of biology
  • Reproduction and development: meiotic cell division stages, crossing over, and amniotic fluid functions
  • Plant physiology: phytohormones promoting fruit ripening and flowering
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  BIOLOGY
• Posted By:

  Caleb_Peter

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