Automated PLE Science Exam Paper Generator

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

(a) (i) Black jack: Animal dispersal (epizoochory) (ii) Sycamore: Wind dispersal (b) Accept any two of: - Have wing-like structures (e.g. sycamore) - Have parachute of fine hairs / pappus (e.g. dandelion, tridax) - Are very small and light in weight - Are dust-like (e.g. orchids)

💡 Examiner Deduction Warning: Cognitive Level: Comprehension (C).

✅ 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) Zero grazing (stall feeding) (b) Farmyard manure (FYM) / Compost manure (c) Accept any two of: - Easy collection of animal dung and urine for manure and biogas - Protects cattle from tick-borne diseases and pasture parasites - Requires a small piece of land - High milk production due to less energy wasted walking - Protects crops from being destroyed by roaming cattle

💡 Examiner Deduction Warning: Cognitive Level: Comprehension & Application (C & A).

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

(a) Accept any two of: - Accessibility of the site - Nearness to a water source for watering young seedlings - Type and drainage of soil - Availability of adequate land - Security against stray livestock and fire outbreaks (b) Accept any two of: - Provides timber and building poles for sale - Provides firewood and wood fuel - Provides shade and purifies the air - Can be used for apiculture (bee farming) - Creates employment opportunities

💡 Examiner Deduction Warning: Cognitive Level: Application (A).

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

(a) (i) Sanitation: The general cleanliness of the environment to promote public health / steps taken to keep an area clean. (ii) Personal hygiene: The cleanliness of the body and the materials used to clean it. (b) Accept any two of: - Sweeping rubbish from the compound - Picking up littered rubbish and disposing of it in dustbins or rubbish pits - Slashing tall grass and clearing bushes around the compound - Draining stagnant water to destroy mosquito breeding grounds - Scrubbing and cleaning latrines and urinals regularly

💡 Examiner Deduction Warning: Cognitive Level: Knowledge & Application (K & A).

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

(i) Sorting: Separates clothes by color to prevent staining, and by texture/dirtiness to protect delicate fabrics. (ii) Soaking: Softens and dissolves stubborn dried dirt and stains, making scrub-washing easier.

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

(a) Accept any two of: - Common diseases affecting people in the community - Pit latrine and sanitation coverage - Immunization coverage among infants and children - Sources of safe drinking water - Nutritional and food security status (b) Accept any two of: - Helps identify community health needs and challenges - Determines the health and sanitation status of the community - Helps government and NGOs plan and allocate medical resources effectively - Creates health awareness and sensitization among community members

💡 Examiner Deduction Warning: Cognitive Level: Comprehension & Application (C & A).

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

(a) Soil drainage (or water retention capacity / porosity) (b) To prevent soil particles from falling into the collecting beaker / to filter soil from water (c) Sand soil drained fastest; because sand soil has larger particles with larger air spaces (pore spaces) that allow water to pass freely

💡 Examiner Deduction Warning: Cognitive Level: Application (A).

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

(a) Drowning is dying due to lungs being filled with water, whereas near drowning is a condition where lungs are filled with water and breathing fails, but the casualty is not yet dead. (b) Any two of: Inability to swim, capsizing of boats in a storm, floods, or getting a muscle cramp while in deep water. (c) Pull them out of the water immediately and apply mouth-to-mouth resuscitation (Kiss of life) followed by chest compressions (CPR).

✅ 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) Siltation is the deposition and accumulation of eroded soil particles into water bodies. (b) Soil erosion. (c) Any two of: It causes flooding in local compounds. It blocks food and light for aquatic life. It reduces the oxygen supply to fish, leading to death.

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

(a) Chemical change (b) Physical change (c) Biological change (d) Physical change

💡 Examiner Deduction Warning: Cognitive Level: Comprehension (C). Exactly 1 mark per correct classification.

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

(a) Ingestion of human faeces containing tapeworm eggs by free-roaming pigs. (b) Pork tapeworm (Taenia solium). (c) (i) Inspecting all pork thoroughly before sale (ii) Cooking pork thoroughly until well done (iii) Confining pigs in pens (iv) Ensuring all people use latrines.

💡 Examiner Deduction Warning: Clear 4-mark health & sanitation integration.

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

(a) Identical twins are formed from one ovum fertilized by one sperm cell which later splits, while fraternal twins are formed from two separate ova fertilized by two different sperm cells. (b) 1. They are always of the same sex. 2. They look exactly alike (have identical features).

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

(a) Humerus [1 mark] (b) (i) Cord: Biceps muscle [1 mark] (ii) Rubber band: Triceps muscle [1 mark] (c) Elbow joint [1 mark]

💡 Examiner Deduction Warning: This is a classic UNEB question. The cord pulls and shortens just like the biceps during flexion, while the rubber band stretches like the triceps.