Automated PLE Science Exam Paper Generator

✅ Official UNEB Section B Scoring Guide (Total: 4 Marks):

(a) Social insects. (b) Some insects are eaten as food (grasshoppers), some pollinate crops, or some provide honey and wax (honeybees). (c) Any two of: Bush burning, Deforestation, Spraying chemical pesticides, or Swarm/wetland drainage.

✅ Official UNEB Section B Scoring Guide (Total: 4 Marks):

(a) (1) Cervical, (2) Thoracic, (3) Lumbar, (4) Sacral / Sacrum, (5) Caudal / Coccyx [1 mark] (b) (i) Cervical: 7 vertebrae [1 mark] (ii) Lumbar: 5 vertebrae [1 mark] (c) Protects the spinal cord // Supports the weight of the head and upper body. [1 mark]

💡 Examiner Deduction Warning: Spelling of 'Cervical', 'Thoracic', 'Lumbar', 'Sacral', and 'Coccyx' must be accurate. Ensure the total adds up to 33.

✅ Official UNEB Section B Scoring Guide (Total: 4 Marks):

(a) Primary Health Care. (b) (i) Community participation (ii) Affordability / Accessibility / Equity / Appropriate technology. (c) Because preventive measures (sanitation, clean water, immunisation) cost very little compared to expensive drugs and hospital admission.

💡 Examiner Deduction Warning: Reward clear economic and social understanding.

✅ Official UNEB Section B Scoring Guide (Total: 4 Marks):

(a) Practicing personal hygiene (bathing, washing hands) OR sleeping under treated mosquito nets. (b) Teaching health education OR providing clean separate latrines OR holding health parades. (c) (i) Mobilising mothers for child immunisation days (ii) Treating uncomplicated malaria with ACTs / distributing ORS for diarrhea.

💡 Examiner Deduction Warning: Award 1 mark per section.

✅ Official UNEB Section B Scoring Guide (Total: 4 Marks):

(a) Any two of: Prostate cancer, Prostate enlargement, Testicular cancer, Hydrocele, or Infertility. (b) Allows the mother to regain her physical health/strength before the next pregnancy (or allows her time to nurse the newborn child properly). (c) Any one of: The vagina has a larger mucosal surface area exposed to seminal fluid. Seminal fluid remains inside the vagina for a longer duration of time. The delicate vaginal lining is prone to micro-tears during intercourse.

✅ Official UNEB Section B Scoring Guide (Total: 4 Marks):

(a) Lukewarm water. (b) Lukewarm water opens up sweat pores to let out excess body heat, whereas very cold water causes shivering (which reflexively increases internal body heat production). (c) Any two of: Passing out stools with blood and mucus, severe abdominal/stomach pain, high fever, or vomiting. 📝 Would you like me to compile these exact exam questions into a printable PDF assessment worksheet for your class's end-of-term revision?

✅ Official UNEB Section B Scoring Guide (Total: 4 Marks):

(a) An ordinary pit latrine requires a tight-fitting lid over its drop hole, whereas a VIP latrine must be left open without a lid at all times. (b) Wood ash (or soil/lime) is sprinkled over the feces. Its role is to dehydrate the waste, neutralize smells, and raise pH to destroy pathogens. (c) Never throw hard materials (like stones, pads, or newspapers) into the bowl to prevent blockage. TOPIC 12: THE REPRODUCTIVE SYSTEM

✅ Official UNEB Section B Scoring Guide (Total: 4 Marks):

(a) The gradual introduction of semi-solid and solid complementary foods to an infant alongside breast milk. (b) At 6 months of age. (c) The infant's digestive system is immature and cannot digest solid starches (or high risk of contamination/diarrhea). (d) Plain porridge lacks protein and causes Kwashiorkor.

💡 Examiner Deduction Warning: Mark strictly on age (6 months) and digestive maturity.

✅ Official UNEB Section B Scoring Guide (Total: 4 Marks):

(a) Raised dish drying rack (or Plate stand). (b) (i) Keeps plates away from crawling insects, dogs, and chickens (ii) Prevents mud and dust splashes from dirtying clean plates. (c) The ultraviolet (UV) rays of sunlight kill harmful bacteria on the plates.

💡 Examiner Deduction Warning: Award 4 marks for complete sanitation rationale.

✅ Official UNEB Section B Scoring Guide (Total: 4 Marks):

(a) Afforestation is the massive planting of trees in an area where there have never been trees before. (b) (i) To get land for farming and settlement (ii) To get wood fuel (firewood and charcoal) and timber. (c) Tree roots that absorb excess rainwater are destroyed, and bare soil easily allows rapid surface runoff into rivers and lakes.

💡 Examiner Deduction Warning: Mark strictly on environmental cause-and-effect.

✅ Official UNEB Section B Scoring Guide (Total: 4 Marks):

(a) (i) Biceps (ii) Triceps [2 marks - Reject: Flexors / Extensors] (b) Muscles produce movement and locomotion // Cardiac muscles pump blood // Diaphragm/intercostal muscles aid breathing // Sphincter muscles control urine release [1 mark] (c) Prevents bone deformities // Prevents backaches, neck, and chest pains // Aids proper food digestion // Helps internal organs function properly [1 mark]

💡 Examiner Deduction Warning: In part (a), candidates who write 'flexors and extensors' score 0. Examiners require the proper anatomical names: Biceps and Triceps.

✅ Official UNEB Section B Scoring Guide (Total: 4 Marks):

(a) Because they are recovering from illness and their damaged body tissues need repair and rebuilding. (b) Proteins (and vitamins). (c) It adds bulk to food and stimulates peristalsis to prevent constipation. (d) Sukuma wiki / Cabbage / Whole grain cereals / Unpeeled fruits.

💡 Examiner Deduction Warning: Award full marks for precise physiological explanations.

✅ Official UNEB Section B Scoring Guide (Total: 4 Marks):

(a) A physical change does not take place in living things and is reversible, whereas a biological change takes place exclusively in living organisms and is irreversible. (b) (i) Melting (ii) Evaporation / Boiling (c) Evaporation

💡 Examiner Deduction Warning: Clear distinction in reversibility and living vs non-living matter.

✅ Official UNEB Section B Scoring Guide (Total: 4 Marks):

(a) Foot rot. (b) Wet, muddy, and dung-filled dirty floors. (c) (i) Regularly trim overgrown hooves (ii) Walk goats through a copper sulphate footbath (iii) Keep pens clean and dry (use slatted floors).

💡 Examiner Deduction Warning: Practical veterinary question.

✅ Official UNEB Section B Scoring Guide (Total: 4 Marks):

(a) Dry banana peelings (or dry bean plant leaves). (b) Filtration (followed by evaporation/crystallization to get solid crystals). (c) Any two of: Used to soften/tenderize food (like dry beans) during cooking. Used as a food preservative for meat and fish. Used as a pesticide. Used as local medicine to cure minor stomach upsets.