NTC GTLE Exams Past Questions and Answers JHS Intergrated Science 2

51. What weight of water would exert a pressure of 2000Pa on the base of a rectangular water tank with dimensions 20cm by 30cm?
A. 120N
B. 1200N
C. 33N
D. 333N
Correct Answer: A. 120N

52. Kofi visits his farm to monitor the growth of his cocoa trees. Unfortunately, he observes that some of the pods are black with brown spots which have a fishy odour. Which of the methods will you recommend for the treatment of the disease?
i. Removing and destroying affected pods
ii. Applying fungicide such as perenox
iii. Destroying and burning affected plants
A. I only
B. II only
C. I and II
D. I, II and III
Correct Answer: C. I and II

53. Kaba marries Isabah without knowing each other’s health status. After a few years, both of them began to experience fever, jaundice, nausea, and tiredness without performing much duty. What might be the disease contracted by Kaba and Isabah?
A. Gonorrhoea
B. Hepatitis
C. Tuberculosis
D. Buruli Ulcer
Correct Answer: B. Hepatitis

54. A magnetic field forms when an electric current flows through a straight piece of insulated wire. The magnetic effect is enhanced when this wire is made into a coil. The magnetic effect of the coiled wire can be increased by all the following effects except the ………..
A. weight of the wire
B. length of the wire
C. number of turns
D. cross-sectional area
Correct Answer: A. weight of the wire

55. An Integrated Science teacher was performing an experiment to test for the presence of starch in a green leaf. The leaf was boiled in alcohol in a water bath for three minutes. The aim of this experiment was to ……………………
A. kill the cells in the leaf
B. soften the leaf for alcohol penetration
C. stop photosynthesis from occurring
D. remove the chlorophyll
Correct Answer: D. remove the chlorophyll

56. An Integrated Science teacher was performing an experiment to test for the presence of starch in a variegated leaf. The leaf was boiled in alcohol in a water bath for three minutes. The aim of this experiment was to find out the ………………..
A. presence of starch
B. importance of chlorophyll in photosynthesis
C. type of pigments in a variegated leaf
D. effect of heat on variegated leaf
Correct Answer: B. importance of chlorophyll in photosynthesis

57. In a science practical lesson to examine the effects of impurities on boiling point of water, a teacher divided the class into two groups, A and B. Group A was given salt to add to the water before boiling. Group B was to boil the water without adding anything. Which group’s water will boil first and why?
A. Group A because the salt increased the boiling point
B. Group A because the salt reduced the boiling point
C. Group B because the salt is absent hence increased the boiling point
D. Group B because the salt is absent hence maintains the boiling point
Correct Answer: C. Group B because the salt is absent hence increased the boiling point.

58. A student asks her teacher in class why clothes dry faster in the northern part of Ghana than in the southern part of the country. The teacher’s response is that …………..
A. both southern and northern areas are less humid
B. the northern area is less humid than the southern area
C. the northern area is more humid than the southern area
D. the southern area is less humid than the northern area
Correct Answer: B. the northern area is less humid than the southern area.

59. During a thunderstorm, it is observed that the lightning is normally seen before the thunder sounds. This occurs because …………………
A. echo is faster than light rays
B. light and sound travel at the same speed
C. light travels faster than sound in space
D. sound travels faster than light in space
Correct Answer: C. light travels faster than sound in space.

60. The combustion of fuel in the presence of oxygen produces heat energy used for cooking and powering machines. What component of fuel aids in combustion?
A. Carbon
B. Hydrogen
C. Nitrogen
D. Sulphur
Correct Answer: A. Carbon

61. Which of the following energy transformations takes place when an electric bell rings?
A. Electric energy → kinetic energy → sound energy
B. Kinetic energy → electric energy → sound energy
C. Kinetic energy → sound energy → electric energy
D. Sound energy → electric energy → kinetic energy
Correct Answer: A. Electric

62. A farmer observes that the maize plants on her farm are showing yellow colouration on the leaves and margins. The growth of the maize plants is so stunted. This means that the maize plants lack ………….
A. carbon
B. nitrogen
C. phosphorus
D. potassium
Correct Answer: B. nitrogen

63. In an experiment to test for the presence of starch, a piece of yam was boiled and placed in a beaker. A reagent was then dropped on the boiled yam and a color change was observed. The reagent and the color change that were observed are ………………
A. fehling solution – red color
B. iodine solution – blue-black color
C. millon’s reagent – red color
D. sudan iii – brick color
Correct Answer: B. iodine solution – blue-black color

64. What will happen if the population of the grasshoppers becomes extinct from the illustration below? Cassava leaves → grasshopper → lizard → snake
A. The population of the cassava plants will decrease
B. The population of the cassava plants will increase
C. The population of the lizard will increase
D. The whole ecosystem will be extinct
Correct Answer: B. The population of the cassava plants will increase

65. A toad is able to survive both on land and in water because it can adapt to both aquatic and terrestrial habitats. How will you classify the organism and its adaptation?
A. It is a reptile hence can live both in water and on land
B. It is an amphibian which has lung and gills
C. It is a mammal because it breastfeeds its young ones
D. It is considered a hermaphrodite
Correct Answer: B. It is an amphibian which has lung and gills

66. Bees visit insect-pollinated flowers purposely for their …………………..
A. nectar
B. petals
C. pollen grains
D. stigma
Correct Answer: A. nectar

67. Which of the following statements about an opaque object is correct? An opaque object ………………
A. allows light to pass through it partially
B. allows light to pass through it fully
C. forms a shadow
D. does not form a shadow
Correct Answer: C. forms a shadow

68. The principle of conservation of energy states that energy ……………….
A. can neither be created nor destroyed
B. can be created and destroyed
C. can be created but cannot be destroyed
D. cannot be created but is destroyed
Correct Answer: A. can neither be created nor destroyed

69. A person prefers to sit by a fire during cold winter months. Which of the following heat transfers gives him the most heat?
A. Convection
B. Radiation
C. Ventilation
D. Conduction
Correct Answer: B. Radiation

70. Which of the following ways best explains the process of ejaculation?
A. Penis → urethra → sperm duct
B. Sperm duct → penis → urethra
C. Sperm duct → urethra → penis
D. Urethra → penis → sperm duct
Correct Answer: B. Sperm duct → penis → urethra

71. The diagram shows the reproductive system of a human female. Identify the parts labeled 1, 2, 4, and 5.

A. 1 is the ovary. 2 is the oviduct. 4 is the uterus. 5 is the vagina.
B. 1 is the uterus. 2 is the oviduct. 4 is the uterus. 5 is the vagina.
C. 1 is the oviduct. 2 is the ovary. 4 is the uterus. 5 is the vagina.
D. 1 is the vagina. 2 is the uterus. 4 is the oviduct. 5 is the uterus.
Correct Answer: C. 1 is the oviduct. 2 is the ovary. 4 is the uterus. 5 is the vagina.

72. In which way does digested food finally reach the bloodstream?
A. It is absorbed into the blood through the blood vessels
B. It is absorbed into the blood through the walls of the lungs
C. It passes from the small intestine into the large intestine then into the blood
D. It passes through the gullet into the blood
Correct Answer: A. It is absorbed into the blood through the blood vessels

73. Digestion takes place in the alimentary canal while food travels through this canal in the following order.
A. Mouth, gullet, stomach, small intestine, large intestine, and rectum
B. Mouth, oesophagus, stomach, small intestine, large intestine, and rectum
C. Mouth, stomach, gullet, small intestine, large intestine, and rectum
D. Mouth, stomach, oesophagus, small intestine, large intestine, and rectum
Correct Answer: B. Mouth, oesophagus, stomach, small intestine, large intestine, and rectum

74. The following characteristics are inheritable in man except …………………….
A. blood group
B. colour of hair
C. intelligence
D. shape of nose
Correct Answer: C. intelligence

75. Which of the following statements of heredity is correct?
A. DNA is found in the genes
B. Genotype describes the genetic make-up of an organism
C. Phenotype describes the genetic make-up of an organism
D. The nucleus forms strands called chromosomes
Correct Answer: B. Genotype describes the genetic make-up of an organism

76. A farmer intends to go into vegetable crop production. Which of the following factors should the farmer consider when selecting a site?
I. Nearness to the market
II. Topography of the land
III. Nearness to the sea
A. I and II
B. I and III
C. II and III
D. I, II and III
Correct Answer: A. I and II

77. Select the correct order for the stages of the life cycle of a plant starting with the seed.
A. Seed, seedling, adult plant, flower, fruit
B. Seed, flower, seedling, fruit, adult plant
C. Seed, fruit, flower, adult plant, seedling
D. Seed, seedling, fruit, flower, adult plant
Correct Answer: A. Seed, seedling, adult plant, flower, fruit

78. A dicotyledonous bisexual flower growing on a mountain is likely to undergo the following types of pollination except ……………………. pollination.
A. self
B. vector assisted
C. water
D. wind
Correct Answer: C. water

79. Akwele, an agricultural science student, realizes that her tomato fruits crack before harvesting. Which of the following statements could explain this occurrence?
A. A period of drought followed by heavy watering
B. Insufficient watering of the tomato crop
C. Over-watering of the tomato plants
D. Restricted watering of the tomato plant
Correct Answer: A. A period of drought followed by heavy watering

80. Identify the terms that describe the following conditions:
i. The period of dry weather which lasts longer than expected
ii. Temporary surplus of water which covers usually dry areas
iii. Too much nutrient in water bodies leading to algae growth
A. I drought II flood III eutrophication
B. I global warming II water pollution III water pollution
C. I evaporation II precipitation III biomagnification
D. I deforestation II flooding III nitrification
Correct Answer: A. I drought II flood III eutrophication

81. An environmental club in a Junior High School decided to solve the problem of erosion in their school. Which of the following methods of soil conservation can they adopt?
A. I, II and IV
B. I, III and IV
C. I, II and III
D. II, III and IV
Correct Answer: C. I, II and III

82. Which of the following layers constitute the soil profile?
A. Air, water and living things
B. Clay, silt and sand
C. Minerals, organic matter and living things
D. Top soil, sub soil and parental materials
Correct Answer: D. Top soil, sub soil and parental materials

83. What is common among lithium, sodium and potassium is that they ………………
A. are alkaline earth metals
B. have one electron in their outermost shell
C. are inert elements
D. cannot form oxides
Correct Answer: B. have one electron in their outermost shell

84. Acetic acid found in vinegar is considered a weak acid because it …………..
A. contains a COOH group
B. is highly ionized
C. is weakly ionized
D. contains aqueous solution
Correct Answer: C. is weakly ionized

85. What formula is formed when zinc reacts with chlorine?
A. CaCl2
B. KCl
C. NaCl
D. ZnCl2
Correct Answer: D. ZnCl2

86. Soil profile refers to an arrangement within a soil which has…………….
A. horizontal layout
B. moisture content
C. particle size
D. vertical layout
Correct Answer: D. vertical layout

87. The following farming practices can be applied in mixed cropping except………………..
A. different types of pesticides usage
B. minimizing risk relating to crop failure
C. specific planting pattern
D. cultivating two or more crops
Correct Answer: A. different types of pesticides usage

88. A study in which characteristics are passed on from one generation to the next is called …………………..
A. fertilization
B. genetics
C. phonetics
D. pollination
Correct Answer: B. genetics

89. The secondary sexual characteristics in females develop because of ……………….
A. absence of androgen
B. absence of oestrogen
C. androgen
D. oestrogen
Correct Answer: D. oestrogen

90. The gall bladder is attached to the ……………………………….
A. large intestine
B. liver
C. lungs
D. kidney
Correct Answer: B. liver

91. Indigestion is caused by all the following habits except…………………
A. eating too fast
B. exercising of the body
C. lack of roughage in diet
D. overeating
Correct Answer: B. exercising of the body

92. How does listening to music on the radio follow the law of conservation of energy?
A. Electrical energy remains unchanged
B. Electrical energy is converted into other forms of energy
C. Sound energy is changed into potential energy
D. Sound energy is gradually destroyed as the radio plays
Correct Answer: B. Electrical energy is converted into other forms of energy

93. Which of the following food substances must be taken when one is constipated?
A. Fibre
B. Carbohydrate
C. Protein
D. Fat and oil
Correct Answer: A. Fibre

94. Which of the following organs is the male part of the flowering plant?
A. Androecium
B. Bryophyte
C. Gynoecium
D. Sporophyte
Correct Answer: A. Androecium

95. Which instrument is used to measure the speed of wind?
A. Anemometer
B. Hydrometer
C. Rain gauge
D. Wind vane
Correct Answer: A. Anemometer

96. The most common farming practice in Ghana is ………………………
A. land rotation
B. mixed cropping
C. monoculture
D. shifting cultivation
Correct Answer: B. mixed cropping

97. Heat period in animals is also known as ……………… period.
A. fallow
B. lactation
C. menstrual
D. oestrus
Correct Answer: D. oestrus

98. What is the final stage of digested food before it leaves the stomach?
A. Bolus
B. Chyme
C. Enteric
D. Mucilage
Correct Answer: B. Chyme

99. The food substance that provides energy to humans is known as ………………….
A. carbohydrate
B. fat
C. protein
D. vitamin
Correct Answer: A. carbohydrate

100. The transfer of heat from one place to another without the need for a material medium is called…………………..
A. conduction
B. convection
C. evaporation
D. radiation
Correct Answer: D. radiation