Summary

• Description:

  The MS Word document comprises LANJET Biology Paper 1 2026 Pre-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 LANJET Biology Paper 1 examination.

  This paper provides comprehensive evaluation across key biological principles including cell structure, physiology, mammalian anatomy, genetics, ecology, and evolutionary adaptation.

  • Month Administered: July 2026
  • Duration: 2 Hours
  • Total Marks: 80 Marks
  • Number of Questions: 23 Questions (Questions 1 – 23)
  • Structure: Sectional single-paper consisting of 23 compulsory structured questions

  It covers the following topics:

  • Cell biology (organelle distribution across Plantae and Monera)
  • Circulatory systems (heart septa, cardiac cycle stages, and valves)
  • Reproductive biology (advantages of sexual reproduction, mammalian testis endocrine/reproductive functions, and counter-current heat exchange)
  • Mammalian skull anatomy, dentition, and appendicular skeleton (tibia, fibula, and joints)
  • Cell physiology and digestion (enzyme action visking tube experiment, protein digestion pathways)
  • Plant physiology (stomatal opening mechanisms, effect of carbon (IV) oxide, tropic responses, and lenticels)
  • Cellular respiration (glycolysis phases, lactic acid accumulation, and Respiratory Quotient determination)
  • Ecology and population estimation (capture-recapture method, physiological drought in halophytes, grazer-browser co-existence, hydrophyte leaf adaptations)
  • Evolution and genetics (industrial melanism in peppered moths, RNA structure and base pairing)
  • Thermoregulation under hot and humid conditions
  • Adaptations for absorption in lungs and the ileum
  • Nervous coordination (components of a simple reflex arc)
  • Biochemistry (polysaccharide storage in living organisms)
• Length:

  12 pages
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  BIOLOGY

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