Science Questions and Answers - Standard 7 Term 2 Opener 2022 Set 1

QUESTIONS

1. The diagram below shows a certain blood vessel.
   
   The blood vessel shown above is 
   1. an artery 
   2. blood cell
   3. capillary 
   4. a vein
2. In the human alimentary canal, mineral salts are absorbed in the
   1. large intestines 
   2. duodenum
   3. mouth
   4. small intestines.
3. Which one of the following physical changes is not experienced in adolescent girls? 
   1. Increase in weight and height. 
   2. Voice deepening. 
   3. Growth of breasts. 
   4. Pimples appear on the face.
4. Which one of the following pairs of vertebrates lay unfertilized eggs?
   1. Newt and chameleon. 
   2. Frog and tilapia. 
   3. Lizard and salamander. 
   4. Snake and crocodile.
5. Which one of the following is not true about incubation stage in HIV infection? 
   1. One can affect others intentionally 
   2. One looks healthy 
   3. Signs and symptoms begin to show off 
   4. One tests positive
6. The main function of the red blood cell is to
   
   1. help in clotting blood. 
   2. transport other blood cells. 
   3. fight disease germs. 
   4. transport oxygen.
7. Human intestinal worms can best be controlled by 
   1. treating infected people in hospital 
   2. regular deworming 
   3. observing proper hygiene and sanitation 
   4. proper cooking of foods eaten raw
8. Which one of the following is true about molars and premolars? They 
   1. are equal in number in an adult 
   2. have ridges and cusps 
   3. are used for cutting and grinding 
   4. are shed from the age of six years
9. The method of grazing shown below is
   
   1. paddocking 
   2. strip grazing 
   3. herding
   4. tethering
10. The method of food preservation that removes water from food is 
    1. use of honey 
    2. salting 
    3. canning
    4. freezing
11. An embryo in a seed is composed of 
    1. hilum and testa 
    2. endosperm and cotyledon 
    3. plumule and endosperm 
    4. radicle and plumule
12. Study the diagram below and answer the questions that follows
    
    Which of the following is false about part Z? 
    1. Helps to moisten air. 
    2. It has hair and mucus. 
    3. It allows entry of food. 
    4. it has e-shaped rings.
13. Malaria can be prevented by the following methods except 
    1. ensuring that there are no long grasses and bushes around 
    2. immunization.
    3. draining stagnant water.
    4. covering water storage containers.
14. The nutrients required by plants in large quantities are the 
    1. macronutrients
    2. micronutrients
    3. compound nutrients 
    4. straight nutrients
15. Which one of the following is not true about fibre in the diet? 
    1. It has no nutritional values 
    2. It is not digested in the body.
    3. It helps prevent constipation. 
    4. It can be obtained from fats and oils.
16. Three of the following materials can be attracted by magnets except 
    1. aluminum material 
    2. iron rod 
    3. tinrod
    4. cobalt rod
17. Wilch one of the following paits consists of immunisable discases only?
    1. Tuberculosis and cholera. 
    2. Typhoid and malaria.
    3. Typhoid ani kwashiokor. 
    4. Bilharzia and tuberculosis.
18. Which one of the following plants is not attacked by stalk borer? 
    1. Sorghum
    2. Maize
    3. Green grams 
    4. Sugarcane
19. Pufi hails. mushrooms and toad stools are classified under which group of plants 
    1. Non-green plants. 
    2. Green-non-llowering plants.
    3. Fungi. 
    4. Carnivorous plants.
20. The diagram below shows an experiment that was set up by std 6 pupils.
    
    Which of the following statements is true about the experiment?
    
    1. Water in the basin decreases after the candle went off 
    2. Water in the jar went down when the candle went off 
    3. The candle went off immediately. 
    4. The experiment was investigating that air occupies space.
21. Which of the following animal parasites attack the intestines of sheep and goat only?
    1. Tapeworm.
    2. Lung worms. 
    3. Hook worms. 
    4. Liver fluke.
22. A pupil set up the apparatus as shown below.
    
    Which of the apparatus Q R S shows drainage in clay soil ?
    1. Q
    2. R
    3. S
    4. None of the above
23. A baby born by a mother who smokes might be born with the following problems except 
    1. stomach ulcers 
    2. poor inental growth
    3. weak immune systems 
    4. under weight
24. Which one of the following characteristics of clouds is found during fine weather? 
    1. Low in the sky
    2. Dark grey in colour. 
    3. Irregular shaped clouds. 
    4. Bundle of cotton wool.
25. The surrounding of living organisms is referred to as 
    1. habitat
    2. atmosphere 
    3. environment 
    4. shelter
26. Below are signs and symptoms of a certain water borne disease
    1. skin rash
    2. aches in muscles and joints
    3. headache d)sore in the walls of intestines
       The disease is likely to be 
       1. typhoid 
       2. malaria
       3. bilharzia
       4. cholera
27. Which one of the following parts of the digestive system is involved in storage of undigestible food materials before egestion?
    1. Large intestines. 
    2. Rectum. 
    3. Appendix. 
    4. Small intestine.
28. It is true to say that all animals 
    1. feed by chewing. 
    2. give birth. 
    3. react to changes in the environment. 
    4. move by walking
29. Below is a diagram that represents an investigation on the transfer of heat
    
    The wax melted and the pins fell one after the other because of 
    1. conduction and expansion
    2. convection and radiation 
    3. radiation and conduction 
    4. conduction and convection
30. If the stigma of a flower was cut off when the flower was young, which of the following would take place! 
    1. Ovules would become seeds
    2. Ovary would come a fruit. 
    3. Self pollin would take place. 
    4. Pollen grains could still be produced.
31. Which one of the following groups of livestock parasites are found in the liver?
    1. Hookworms, liveriluke, lungworms. 
    2. Tapeworms, hookus, roundwonas. 
    3. Lungworms, tapewonins, hookworms 
    4. Liverfluke, roundworms, lapeworms.
32. Which one of the following parts si a plant is correctly matched with its function? 
    1. Style - Allows the formation of the pollen tube. 
    2. Stalk - Protects the inner parts of the flower. 
    3. Sepal - Tran insects. 
    4. Anthers !duce ovules.
33. Which one of the plants grows where the soil lacks nitrates? 
    1. Bracket tree 
    2. Moss
    3. Buttercup 
    4. Lichens
34. The clouds that are usually mountainous and white in colour are also known for 
    1. being found low in the sky 
    2. a sign of a bad weather. 
    3. having a flat base. 
    4. bearing rain.
35. Which one of the following pairs does not consist of methods of controlling cron pests?
    1. Trapping and mulching 
    2. Spraying ar.d weeding
    3. Scaring and handpicking 
    4. Trapping and parang
36. The pie chart drawn presents the composition of air
    
    Which of following parts is wrongly matched to its importance?
    1. W-Supports burning
    2. Z-Germination of seeds
    3. Y-Making protein
    4. X-Preservation of soft drinks.
37. Food in a maize seed is stored in a part called 
    1. teste
    2. endosperm 
    3. plumule
    4. radicle
38. The main difference between paddocking and strip grazing is 
    1. size of the grazing area. 
    2. movement of the animals.
    3. type of the fence used 
    4. number of animals kept.
39. Three of the following are examples of carnivorous plants except one. Which one is
    
    1. Bladder wart 
    2. Sundew 
    3. Cactus
    4. Cobra lily
40. Study the food chain below and answer the question that follows.
    Grains→Rats→Snakes→Hawk
    What would happen if all the snakes were killed? 
    1. The number of hawks would increase. 
    2. The number of rats would increase. 
    3. There would be an increase in the amount of grains. 
    4. The hawks will start eating grains.
41. Blood is seen to be red because of the red pigment known as 
    1. oxyhaemoglobin 
    2. platelets 
    3. haemoglobin 
    4. chlorophyll
42. One of the following pests is wrongly matched with the part of the crop it attacks. Which one is it? 
    1. Aphids - Roots 
    2. Cutworms - Stems 
    3. Weevils - Grains 
    4. Stalkborer - Stems
43. Which one of the following is not a method of water-conservation? 
    1. Irrigation
    2. Harvesting rain water.
    3. Using water sparingly. 
    4. Re-using water.
44. Drugs that slow down body functions such as heartbeat and breathing rate are called 
    1. preventive medicines. 
    2. curative medicines 
    3. depressants. 
    4. narcotics
45. The following are traditional methods of preserving food. Which one is not? 
    1. Use of honey
    2. Freezing
    3. Salting
    4. Smoking
46. Standard five pupils set up the experiment shown below to demonstrate a certain type of heat transfer
    
    In which position in the diagram should the candle be placed for the convection box to work effectively?
    1. Q
    2. S
    3. R
    4. T
47. Which one of the following pairs of organs in the human body both produce sex cells? 
    1. Ovary and testis. 
    2. Penis and testis. 
    3. Uterus and ovary 
    4. Vagina and penis.
48. Farmers practise mulching mainly to stop which type of erosion? 
    1. Gulley
    2. Splash 
    3. Rill
    4. Sheet
49. The type of animal feed that is cut and fed to animals directly is known as 
    1. fodder
    2. silage 
    3. hay
    4. concentrate
50. The diagram below shows a coin that was placed in a container with water.
    
    What made the object to be observed at image W? 
    1. Splitting of light.
    2. Absorption of light. 
    3. Bouncing back of light. 
    4. Apparent bending of light.

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