STD VII SCIENCE ONLINE SELF NECTA TEST FOR YEAR 2015
Choose the correct answer and write its letter.
1.Which of the following groups represent characteristics of living organisms?
Dying, feeding and seeing
Dying, reproducing andchanging colour
To respire, to respond and hearing
To respire, to reproduce and to walk
To move, to respirereproduce
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2.Why hybridspecies of animals and plants are better?
They clongate and do notneed fertilizers
They produce quality product and resist diseases
They mature early and yieldstrong production
They do not need nutrientsand resist diseases
They mature early and donot need medicine.
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3.Which of the following groups are the characteristics used to identify animals that belong to reptiles?
Laying eggs, cold blood living in water
Laying eggs, living in water and terrestrial life
laying eggs, warm blood and terrestrial life
laying eggs, cold blood and respire by using fins
laying eggs, respire using skin and living in water.
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4. Blood takes in oxygen and gives out carbon dioxide through;
air Sacs
walls of lungs
epiglotis
capillaries
Nose
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5. The absence of chlorophyll in a plant may lead to;
lack of iodine in plants
failure of plants to synthesize food
drying of the plant leaves
plant leaves becoming yellow
shading off the plant leaves.
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6. Phototropism is a process whereby plant grows towards,
light
gravitational force
water
darkness
chemicals
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7.Part of a cell responsible for coordinating all cell activities is called;
cytoplasm
vacuole
chloroplast
cell membrane
nucleus
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8. The following figure shows living things which are poisonous, except;
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9. The action of a plant transporting water from roots to the leaves is called;
osmosis
diffusion
push
pressure
movement
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10. Which of the following glands control the activity of other glands;
pancrease
pituitary
thyroid
adrenaline
parathyroid
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11. The femaole part of a flower which is responsible for reproduction
stamen
style
ovary
petal
sepal
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12. The difference betwen a fruit and a seed is.......
a seed has a fruit
a fruit can germinate
fruit has two cotyledones
seed can germinate
seeds are not eaten
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13.Things which are important for health and life are
Playing football, bathing, washing clothes, overfeeding
Eating, being clean, resting, playing
Doing exercises, eating balanced meal, resting and being clean
Eating eggs, recreation, sleeping, cleaning the environment
Taking bath, eating, sleeping
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14. Food rich in carbohydrate enable the body to
Withstand diseases
Become warm
Grow rapidly
Become energetic
Become soft
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15.Which of the following are noninfectious diseases?
Malaria, colds and diabetes.
Asthma, diabetes cholera
Bilharzias, hookworm rickets
Diarrhea, typhoid fever and asthma
Asthma, epilepsy and fowl pox.
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16.Why is it important to rest after work?
The body cools
The body experience
The body regain energy
The body to perform activities
The person is allowed to sleep
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17.Diseases which can prevented by vaccination are
Asthma, whooping cough, malaria and cholera
Tuberculosis, asthma and measles
Measles, diphtheria, tuberculosis and whooping cough
Malaria, measles, tuberculosis and cholera
Diphtheria, tuberculosis, AIDS and measles.
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18. Residents of Mlalo eat beans, meat and rice. For better health, they need to add
Fish
Green vegetables
Chicken
Bread
Cow pea
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19.Which among the following can be reduced from the body through participating in sportsand exercises?
Sugar
Proteins
Poisons
Dirtiness
Fats
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20.Which of the following is not a proper way of preventing malaria disease?
Cutting grasses
Covering water swamp
Using mosquito nets
Spraying insecticides
Burning wastes
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21. Exercise is one of the methods of reducing
Vomiting
Fainting
Muscle contraction
Diarrhoea
Nose bleeding
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22.A child with rickets lacks vitamin
K
D
A
B
C
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23.Lack of vitamin B lead to a disease called
Meningitis
ulcers
Measles
Trachoma
Beriberi
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24.One of the advantages protein foods in our bodies is
To protect against diseases
For the growth and repair cells
To provide energy
To increase weight
To provide heat
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25.What is first aid?
An emergency service given to a patient by a doctor.
Prior service given to a patient before being sent to hospital
A service given for a personsuffering from fire wound
A service given to a person with bitten by snake
A service given to a person with broken bones.
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26.One of the important aid given to a person who burnt by fire.
Pouring water
Covering with clothes
POURING acid
covering with blanket
smearing honey.
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27. One of the effects of applying oil on a wound caused by fire is to;
increase temperature in the wound
increase pain in the wound
allow air to penetrate
causes germs to enter the wound
increases swollen blisters
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28.Which of the following statements is correct about HIVand AIDS?
Having HIV is the same as having AIDS
The source of HIV and AIDS is veneral diseases
Itis easy to prevent AIDS than HIV
Avoiding transmission of HIV will also avoid AIDS
A person with HIV has no white blood cells
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29. One of the germs whichdestroys the white blood cells is
Bacteria
HIV
Plasmodium
Amoeba
Fungus
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30.Which of the following is common to„the spread of HIV in the society?
Sharing of needles, toothbrushes, blood and unsafe sex
Video cassettes, songs, music and plays
Television, newspapers and leaflets concerning HIV
Condoms, health experts, seminars and AIDS institutions
Circumcision of men and women
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31.Which blood cells are attacked by HIV?
Platelate cells
White blood cells
Red blood cells
Hemoglobin
Plasma
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32.One can get sugar from sugar cane solution by
Boiling and filtration
Boiling and cooling
Cooling and freezing
Boiling up to vaporization
Putting on sunlight
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33.When observing a person cutting a tree from a distance you can see an axe hitting the tree before hearing the sound.
This shows that;
Light travels in a straight
Sound travels slower than light
Light travels slower thansound
Sound travels faster than light
Sound travels on straight line
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34.What is the difference between ice and water?
Water is heavier than ice
Water is more cohesive than ice
Water is less coloured than ice
Water occupies space but ice does not
Ice is soft than water
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35.Change of matter that does not lead to change in mass is known Chemical change
Chemical change
Physical change
Change in density
Change of state
Natural change
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36.Dissolved ash from lemon leaves changes litmus paper from;
Blue to white
Red to blue
Blue to red
Blue to green
Red to yellow
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37.A mixture of different known as
Oxygen
Hydrogen
Air
Nitrogen
Mater
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38. Which of the following chemical change?
Decomposition of garbage
Souring of milk
Burning of charcoal
Dissolution of sugar
Rusting of iron
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39.Which of the following pairs is correct about lens?
Convex lens diverges light rays
Concave lens correct long sightedness
Convex lens correct sightedness
Concave lens correct short sightedness
Concave lens converge light rays
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40.The function of pulleys in our daily life is
To lift heavy load
to open bottle tops
to wrap objects
to reduce slope
to simplify firewood from chopping
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41.Observe the signs in the following figure and name them according to their arrangement from;left side;
Capacitor, dynamo, dry cell,switch, battery
Switch, bulb, resistor, capacitor, dry cell
Bulb, capacitor, dry cell, resistor, battery
Resistor, bulb, switch, dry cell, capacitor
Switch, resistor, bulb; dray cell, capacitor.
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42.Which device is used to magnify the image of very small objects?
Telescope
Microscope
Periscope
Prism
Lens
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43.An electric current of 0.8 amperes is passing through a wire which has a resistance of24 ohms. What is the voltage of the electricity in the circuit?
30
192
24
19
19.2
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44. Which among the following does not conduct electricity?
rubber
tin
copper
iron
mercury
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45. A device which is made of magnet and used by sea men in order to locate direction while travelling in the sea is known as
Bell
telephone
horn
compass
speaker
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46. The following symbols are used in an electric circuit.Which symbol represents a resistor?
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47. The correct formula of finding the work done is;
Work done =Force x Weight
Work done =Distance/Time
Work done =Force/Time
Work done =Force x Distance
Work done =Distance/Force
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48.Our images can be seen clearly when we use
Concave mirror
Convex mirror
Plane mirror
Concave lens
Convex lens
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49.It is important to keep records of the experiment done in order to
Use it as reference
Publish the efficiency of theperson who did the experiment
Draw the table of results
Be used to correct different data
Facilitate development
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50.The researched and analysed data can be represented by