Mosses, liverworts and ferns can be grouped together because they
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(C)
Are seedless plants
4
Spirogyra and mucor can be grouped together as Thallophyta because
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(E)
Their bodies are made up of thallus and filaments alternatively
5
Which of the following invertebrates does NOT possess antennae?
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(E)
Spider
6
Which of the following is INCORRECT? The prothallus of a fern
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(C)
Is the dominant plant
7
Which of the following cell constituents is NOT common in both plants and animals?
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(B)
Chloroplast
8
The character-producing factors in living organisms are
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(E)
Genes
9
A mixture of mercurous and mercuric nitrates is added to a food substance. A white precipitates is formed which on gentle heating turns red. The food substance is
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(A)
Protein
10
The mammalian organ through which nourishment and oxygen diffuse into a developing embryo is called
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(E)
Placenta
11
Osmosis can be defined as the movement of
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(D)
Water across a semi-permeable membrane from solution of low concentration to high concentration
12
Which of the following statement is NOT true of enzymes? They
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(E)
Can withstand high temperature
13
The dorsal and anal fins of fish are used for
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(B)
Controlling rolling
14
Exoskeleton is NOT found in the
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(C)
Earth worm
15
Blood clotting is initiated by
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(B)
Platelets
16
Pepsin is a digestive enzymes which breaks
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(C)
Protein into peptones
17
Anaerobic respiration in yeast produces
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(A)
Carbondioxide and ethanol
18
Underground stems which grow horizontally through the soil are
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(B)
Rhizomes
19
A man with normal haemoglobin (AA) marries a woman who has sickle-cell haemoglobin (SS). They have a child who has a sickle-cell trait. Which of the following genotypes could be associated with the child’s haemoglobin?
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(D)
AS
20
In the Burret test, some protein was mixed with sodium hydroxide solution. Which of the following chemicals should be added to the mixture for a positive results?
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(B)
Copper sulphate
21
The removal of a man’s pancreas by surgical operation can affect only the digestion of
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(B)
Starch, protein and fats
22
The parts used by the tapeworm to fasten itself to the host’s intestine are the
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(B)
Hooks and suckers
23
Which of the following types of vertebrae occur in equal numbers in the rabbit, rat and man?
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(D)
Cervical
24
Which of the following statements is NOT true of the piliferous layer of root? It
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(A)
Has a very thin cuticle
25
A flowering plant is monoecious if
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(D)
The gynoecium and androecium are on the same plant
26
How many nuclei are found in pollen tube during fertilization?
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(B)
3
27
Which of the following is NOT a waste product of plants?
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(D)
Sap
28
If an animal is very active and has good muscular control, it is likely to have well-developed
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(D)
Cerebellum
29
Which of the following adaptations is NOT concerned with the flight of birds?
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(E)
Webbed feet
30
The transect method can be used in ecology to show the
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(A)
Number of plants and animals in a habitat
31
Which of the following group does NOT reproduce asexually?
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(A)
Mucor, Spirogyra and Paramecium
32
Fehling's solution will readily change colour from blue to reddish colour when it is
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(E)
warmed with a solution of reducing sugar
33
The presence of a diastema in the jaw bone indicates that the mammal lacks the teeth suitable for
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(A)
tearing
34
Normally the flow of blood is NEVER from
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(D)
arteerioles to the artery
35
Heat produced in tissue respiration in plants is
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(A)
a chemical form of energy
36
The axial skeleton of a mammal does not include the bones of the
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(C)
limbs
37
Which of the following sequences represents process of blood clothing? 1. Fibrins forms a network of threads 2. Red blood cells are caught and clot is formed 3. Fibrinogen in plasma changes into fibrin 4. Blood is exposed to air
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(B)
4, 3, 1, 2
38
Green plants are important in the ecosystem because they are
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(B)
producers
39
An anemometer is an instrument for measuring
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(C)
wind speed
40
Which of the following is NOT regarded as a pollutant on land or in the air?
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(E)
nitrogen
41
Which of the following groups of factors is completely abiotic?
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(C)
Wind, altitude, humidity, light
42
Which of the following lists of diseases, their causes and transmission is CORRECT?
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(D)
small pox, virus, skin with blister, close contact with infected person
43
Erosion can be reduced along shape by
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(A)
ridging across slope
44
If a handful of soil is shaken with water and left to settle, the soil particles will settle from light to heavy particles as follows
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(A)
humus, clay, silt, sand, stones
45
Denitrifying bacteria in nature liberate gaseous nitrogen directly from
