SECOND TERM EXAMINATION 2019 CLASS: PRIMARY 4                                                                     SUBJECT: BASIC SCIENCE NAME:…………………………………………………………………………………… 1.)   ______________ is a disorder in the system of living organisms which prevent proper functioning (a) diet (b) pests (c) disease (d) food   2.)   Substances which can dissolve in a liquid are called _____         (a) solvent (b) solute (c) solution (d) salt 3.)   A meal which contains all classes of food in the right proportions is known as ______ (a) inadequate diet         (b) balanced diet      (c) underbalanced diet  (d) unbalanced diet 4.)   All the following are examples of insect pests except _________  (a) rats (b) grasshoppers (c) caterpillars (d) weevil 5.)   Which of the following is not a gardening tools _______ (a) watering can (b) hoe (c) tractor (d) hand trowel  6.)   How many teeth are there in the dentition of an adult (a) 10 (b) 16 (c) 32 (d) 12 7.)   __________ is the upward movement of water from the earth surface to the cloud through the help of heat (a) liquidification (b) evaporation (c) condensation (d) sublimation   8.)   Which of the following is not an example of harmful food (a) unripe fruit (b) riped fruit (c) rotten food (d) contaminated food   9.)   Harmful foods can lead to the following except _____ (a) promoting good health (b) dysentery (c) stomach upset (d) vomiting 10.)    The type of teeth used for tearing is ______ (a) canines (b) molar (c) incisors (d) pre-molar 11.)    Which of the following classes of food fight against germs and diseases in the body (a) carbohydrates (b) vitamins (c) proteins (d) fat and oil 12.)    All the following cannot dissolve in water except _____ (a) stone (b) alum (c) wood (d) steel 13.)    A long narrow pipe that connect the mouth to the stomach is known as ______ (a) gullet (b) small intestine (c) anus (d) lungs 14.)    The chemicals used to kill weeds is known as _______ (a) insecticides (b) herbicides (c) pesticides (d) floricides 15.)    ________ and _________ are examples of food that builds and repair worn-out cells (a) orange, banana (b) yam and rice (c) bread and water-melon (d) beans and milk 16.)    __________ are unwanted plants that grows where they are not being planted (a) feeds (b) seeds (c) weeds (d) reeds 17.)    The _________ helps to mix the food we eat with saliva and roll it into ball-like structure (a) tongue (b) lips (c) teeth (d) 18.)    All the following are methods of purifying water except _____ (a)  boiling (b) sieving (c) adding alum (d) adding chemical called chlorine   19.)    Crops that can be propagated by stems is ______ (a) cowpea (b) cassava (c) maize 20.)    The _________ is the organ of taste in the mouth (a) skin (b) tongue (c) eyes (d) ear   Section B: 1.)   What are weeds? _____________________________________________________________ ___________________________________________________________________________   b.) Mention two importance of weeds to the farmers (a) ________________________________            (b) ________________________________ (c) ________________________________            (d) ________________________________   2.)   Define pest _________________________________________________________________ ___________________________________________________________________________ b.) State three classes of pests   (a) ________________________________            (b) ________________________________ (c) ________________________________              3.)   Explain the term: “Evaporation” ________________________________________________ ___________________________________________________________________________ b.) List three ways of making water pure (a) ________________________________            (b) ________________________________ (c) ________________________________              4.)   What is balanced diet? _________________________________________________________ ___________________________________________________________________________ b.) Give three examples of harmful foods (a) ________________________________            (b) ________________________________ (c) ________________________________              5.)   List three feeding system found in the mouth (a) ________________________________            (b) ________________________________ (c) ________________________________            b.) State the classes of food   (a) ________________________________            (b) ________________________________ (c) ________________________________           
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