Summary

• Description:

  The PDF document comprises THE SUPER LEAGUE JOINT NATIONAL MOCKS 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 assessment examines comprehensive concepts across physiological processes, cellular biology, genetics, ecology, and anatomy in living organisms. It evaluates learners' competence in biological diagram interpretation, physiological calculations, and cellular mechanisms essential for secondary school biology mastery.

  • Duration: 2 Hours
  • Total Marks: 80
  • Number of Questions: 25 (Questions 1 to 25)
  • Structure: A single-section theory paper comprising 25 compulsory short-answer, structured, and diagram-based questions.

  It covers the following topics:

  • Cell Biology and Cytology (Organelle identification via electron micrograph, cytoplasmic streaming, absence of mitochondria)
  • Respiration and Cellular Metabolism (Lactic acid accumulation and muscle fatigue, respiratory gas transport)
  • Reproduction in Animals and Plants (Functions of Sertoli, interstitial, and guard cells; ovum transport; double fertilization in angiosperms)
  • Plant Physiology and Water Relations (Transpiration balance experiment, guttation versus transpiration, plasmolysis mechanisms)
  • Hormonal Regulation and Endocrinology (Glucagon, progesterone, adrenal gland regulation of sodium ions)
  • Nutrition in Plants and Animals (Food tests for starch, leguminous root nodules and nitrogen fixation, temperature effects on crop yield, salivary glands and saliva properties, herbivore dentition adaptations)
  • Transport in Animals (Circulatory disorders including varicose veins, ABO blood group compatibility)
  • Genetics and Molecular Biology (Monohybrid inheritance, DNA-to-mRNA transcription, codon calculations)
  • Excretion and Homeostasis (Kidney positioning and adrenal gland function)
  • Parasitology and Vector Biology (Mosquito taxonomy and medical significance, Trypanosoma parasite identification, vector biology, microscopic magnification)
  • Ecology, Growth, and Development (Significance of seed dormancy and dispersal, insect metamorphosis, role of ecdysone/prothoracic gland)
  • Evolution (Homologous structures and divergent evolution)
• File Size:

  523.60 KB
• Length:

  12 pages
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  Biology
• Posted By:

  Caleb_Peter

Enter your details below to initiate a payment using MPESA.