Summary

• Description:

  The PDF document comprises Navakholo Joint Evaluation Test 1 Biology Paper 1 March 2026 Pre-Mock Exam with Marking Scheme. The marking scheme is in a different document.

  It was a KCSE Biology Paper 1 examination. This paper tests candidates' conceptual understanding of cell biology, human physiology, genetics, ecology, and classification through 25 structured short-answer questions requiring detailed explanations and calculations.

  • Month Administered: March 2026
  • Duration: 2 hours
  • Total Marks: 80
  • Number of Questions: 25 (Questions 1–25)
  • Structure: All questions compulsory; answers written in spaces provided

  It covers the following topics:

  • Blood clotting — effect of temperature on bleeding from fresh wounds
  • Role of green plants in a pond ecosystem; biological vs. chemical pest control
  • Lysosomes (suicide bombs); organelle responsible for lipid and steroid manufacture
  • Lamarck's theory of evolution — reasons it is unacceptable
  • Adaptations of Ascaris spp. (roundworm) for parasitism
  • Advantages of cross-pollination over self-pollination
  • Economic importance of insects
  • Blood pressure in arteries vs. veins; blood group incompatibility (Group A donor, Group B recipient)
  • Prey adaptations to escape predators
  • Plant classification (Kingdom to Division) based on observed features — parallel veins, flowers
  • Reasons plants lack excretory organs; role of the liver before food absorption
  • Methods of collecting small animals; precautions during collection
  • Resolving power definition; cell size calculation from field of view (onion cells)
  • Dangers of burning charcoal in a poorly ventilated room
  • Blood group antigens; adaptations of red blood cells for movement in capillaries
  • Primary mechanisms preventing microorganism entry into the body
  • Roles of ecdysone and juvenile hormones in insect life cycles
  • Reproductive hormones secreted by the pituitary gland in women
  • Conditions for insulin release and its biological functions
  • Homeostatic functions of the kidney
  • Basic unit of DNA molecule; chemical components of a nucleotide
  • Co-dominance in cattle coat colour (roan) — genetics cross and F2 phenotypes
  • Dental formula analysis — mode of feeding, carnassial teeth function
  • The pancreas as a dual gland
  • Reasons microscope sections must be thin
• File Size:

  265.96 KB
• Length:

  9 pages
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  BIOLOGY
• Posted By:

  Caleb_Peter

Enter your details below to initiate a payment using MPESA.