1.
Which of the following characteristics is associated with insert - pollination flowers?
They do not secrete nectar
The surface of the stigma are sticky
Their flowers are inconspicuous
Their stamens have long filament
2.
The following materials are conductors of electricity except
blood
copper
mica
water
3.
Acids react with many reactive metals to give off
hydrogen gas
oxygen gas
ammonia gas
carbon dioxide gas
4.
The commonest method for propagating crops in Ghana is by
budding
root cutting
seeds
stem cutting
5.
Which device is used to measure the population density of a plant species ?
Pooter
Quadrat
Sweep net
Wire mesh
6.
The part of the eye on which images on which images are formed is called ?
aqueous humour.
pupil.
lense.
retina.
7.
The arrangement of electrons in shells of an atom is called
atomic structure
periodic arrangement.
electronic configuration
electronic structure
8.
The type of soil erosion caused by water run-off exposed land on a gentle slope is referred to as
gulley erosion.
rilly erosion.
sheet erosion.
splash erosion.
9.
An advantage in the use of hard water is
furing of kettle.
blockage of water pipes.
formation of scum.
formation of strong bone
10.
In beta decay, the particle emitted is
electron.
neutron.
helium nucleus.
hydrogen atom.
11.
Introduction of travel element into a tretravalent element
I. is know as doping
II.form an n - type semi-conductor
III.form a p - type semi-conductor
Which of the statement above are correct?
I and II only
I and III only
II and III only
I,II and III
12.
Which of the following animals is warm blooded ?
Agama Lizard
Wall gecko
Cockroach
Mouse
13.
In testing for starch in green leaf, the leaf is boiled in ethanol so as to
Kill the leaf cells.
dissolve the chorophyll.
enable iodine solution to penetrate the tissue
stop all chemical reaction in the cells
14.
The following statement are examples of application of biotechnology in agriculture except
crossing animals with desired characteristics
improving upon colour and size of a flower
introduction of foreign genes into livestock
development of pest - resistance crops.
15.
Which of the following solvent could best be used to to remove ink stain in a dress
Ethanol
Kerosene
Milk
Petrol
16.
A different between an atom and an ion is that an atom
is electrically charged whilst an ion is neutral
has protons whilst an ion has no protons
can move about in solution whilst ions cannot move in solution
cannot conduct electricity whilst an ion conduct electricity
17.
The application of lime to solid is to
improve the toxicity of dissolved copper.
improve the soil structure.
increase the availability of calcium ions.
decrease the activities of soil living organism.
18.
Which of the following food chain is correct
Grass frog ----> grasshopper ----->hawk
Hawk ----> grass ----> grasshopper ---> frog
Grass ----> grasshopper ----> frog ----> hawk
Grasshopper ----> grass ----> frog ----> hawk
19.
which of the following traits in human is an example of continuous variation ?
Gender
Colour blindness
Body mass
Blood group
20.
Which of the following metals will release hydrogen from dilute acids?
Ag
Cu
Hg
Zn
21.
Which of the following indicate could be used to determine a PH of 7.4 of a solution?
Litmus solution
Methyl orange
Phenolphthalein
Universal indicator
22.
A property of a material that makes it a good conductor of heat is its
colour
length
nature
volume
23.
The relatives density of a subtance has no units because it is
the ratio of mass to volume
a ratio of densities
always compared to the density of water
a ratio of mass to density
24.
In flies, the allele for grey body colour is dominant and black body is recessive.Two grey-bodies flies mated and they produced 75 grey-bodies flies and 25 black-bodies flies. The cross described is most likely to be
GG x GG
GG x Gg
Gg x GG
Gg x Gg
25.
Which of the following features are associated with dairy cattle? They
I. are lean with fairly long legs.
II. have well - shaped body conformation.
III. have well - develop udder.
IV. are generally humped.
I and II only
II and III only
I,II and III only
II,III and IV only
26.
110 ms -1
100 ms -1
50 ms -1
10 ms -1
27.
Calculate the kinetic energy of the girl.
6000J
3000J
170J
40J
28.
The atomic number of an atomic number of an atom 15 and its mass number is 32.Determine the number of neutrons in the atom.
15
17
32
47
29.
The IUPAC names for Na2SO4 is
sodium (II) sulphate.
disodium sulphate.
sodium tetraoxosulphate. (IV)
sodium tetraoxosulphate. ( VI)
30.
Release of dust into the atmosphere
I. cuts down photosynthesis.
II. cause respiratory disease.
III. reduces visibility
Which of the following above is/are correct?
I only
I and II only
I and III only
I,II and III
31.
Dehorning is importance in animal production because it
control endoparasites.
makes it easy to handle animals.
reduce the food intake of the animals.
makes easy identification of animals.
32.
Which of the following physical properties are associated with sandy soil ?
I. It is well aerated.
II. It has a poor water holding capacity.
III. It is poorly drained.
I only
I and II only
I and III only
I, II and III
33.
What is the unit for momentum
kg m3
Kg m s-1
kg m s -2
m s-1
34.
which of the following statement about breathing in human is correct?
The same amount of nitrogen, more carbon dioxide and less oxygen is breath out than breathed in
The same amount of nitrogen, less carbon dioxide and less oxygen is breathed out than breathed in
More nitrogen, more carbon dioxide and less oxygen is breathed out than breathed in
same amount of nitrogen, more carbon dioxide and more oxygen is breathed in than is breathed out.
35.
An advantage of the use of hay over silage is that hay
ensure the availability of feed all year.
has laxative effect.
has higher proportion of leaves, water and nutrients.
is more palatable to livestock
37.
The concept of natural selection involves the following features expect
survival of the fittest
competition among organism
organisms with the best adapted feature
the use of the concept to classify
38.
Reflection of light occurs because light travels from medium to another
in the same direction
with the same intensity
with different velocities
obeying the laws of reflection
39.
Drug addiction is a brain disease because it
is chronic and relapsing
is harmful and result in compulsive drug use
results in the structural change of the brain of the use
makes the brain more sensitive to drugs
40.
A common disease that affect sheep is
anthrax
aspergillosis
coccidiosis
gumboro
41.
which of the following gases are major atmospheric pollutants
I. Nitrogen dioxide
II. Oxygen
III. Chlorofluorocation
I and II
I and III only
II and III only
I, II and III only
42.
Ethanol may be preferred to mercury as a thermometric liquid because
ethanol is colourless
mercury has a higher specific heat capacity
mercury wet glass.
ethanol has a far lower freezing point
43.
Which of the following use of substances is or are correct for esters? They are used as
I. solvents for quicker-dying paints.
II. flavors in food preparations and cosmetics.
drying agent in making textiles.
I only
II only
II and II only
II and III only
44.
In which of the following blood vessel is the pressure highest
Hepatic artery
Renal artery
Dorsal aorta
Vena cava
45.
Yam is classified as a
Cereal
legume
root tuber
stem tuber
46.
The Easterlies are winds which blow.
towards the pools
from the poles to the equator
along the equator
into the sea
47.
An example of a saturated hydrocarbon is
ethane.
ethene.
ethyne.
ethanol.
48.
The structure in the human body which stores glycogen is
ileum.
liver.
lungs.
pancreas.
49.
The image formed by a plane mirror is
magnified.
real.
laterally inverted.
diminished.
50.
One advantage of mulching is that it.
may be a source of new weed species.
acidifies the soil.
improves soil texture.
increases soil temperature.
(a) (i) Define each of the following terms:
(α) compound;
(β) mixture.
(ii) State two differences between an element and a compound.
(b) Explain each of the following terms:
(i) greenhouse effect;
(ii) climate change.
(c)(i) What is electrical rectification?
(ii) Using simple wave diagram, explain half-wave rectification.
(d) State one way in which each of the following environmental factors is important to the life cycle of crops:
(i) rainfall;
(ii) temperature;
(iii) sunshine;
(iv) wind.
(a) (i) Give three reasons why goats are not normally kept under the intensive system of management.
(ii) Name two diseases that affect rabbits.
(b) (i) Draw the structure of 11Na+.
(ii) State two differences between organic compound and inorganic compounds.
(c) (i) What are decomposer?
(ii) Name three common decomposers in an ecosystem.
(d) (i) Name three structures in the middle ear that help in the transmission of sound waves;
(ii) Mention two ways in which earmuffs are important.
(a) An electrical appliance rated 1.5kW, 240V is left running for hours. Calculate the
(i) current drawn;
(ii) electrical energy consumed.
(b) (i) In what two ways does mulching help to conserve the soil?
(ii) Give two examples of mulching materials.
(c) (i) What is pollution?
(ii) List three major atmospheric pollutants.
(d) (i) State two benefits of each of the following minerals to the human body:
(α) potassium;
(β) calcium.
(ii) Name one source of each of the minerals listed in(d)(i).
(a) (i) State the method of preparing a salt from each of the following pairs of substances:
(α) dilute tetraoxosulphate(VI) acid and dilute sodium hydroxide;
(β) lead(II) trioxonitrate(V) and sodium chloride.
(ii) Write a balance equation for the reaction between lead(II) trioxonitrate(V) and sodium chloride.
(b) (i) What are tidal waves?
(ii) State four ways in which water could be contaminated.
(c) (i) State two ways in which legumes are important in crop production.
(ii) State three advantages of crop rotation.
(d) (i) State three qualities of a good thermometric liquid;
(ii) Give two precautions that must be taken when using a liquid-in-gas thermometer.
In an experiment to investigate the effect of sugar solution on onion tissues, pieces of epidermal tissues of equal sizes were peeled from inner fleshy leaves of onions. A number of the tissues were placed in six test tubes containing sugar solutions of different concentration. After a few hours the cells of the tissues were observed to be deformed. The percentage of the deformed cells in the various solutions are presented in Table 1 below.
Study the diagram carefully and answer the questions that follow.
(a) Plot a graph of percentage of deformed cells on vertical axis and concentration of sugar solution on the horizontal axis.
(b)Draw and label a diagram to show the appearance of the onion cell in the
(i) 0.5% concentrated solution;
(ii) 2.5% concentrated solution.
(c) Give one reason each for the appearance of the cells draw in (b).
(d)State two environmental factors that could have the same effect on a plant as the concentrated sugar solution.
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