A group of closely related organisms capable of interbreeding to produce the fertile offspring are known as members of a
Risposta
(D)
species
2
A beaker of pond water containing few specimens of Euglena was placed in a dark room for two weeks. At the end of this period, the specimens of Euglena were still alive because they were
Risposta
(A)
able to carry out holozoic nutrition
3
The cytoplasm of a cell is considered a very important component because it
Risposta
(B)
suspends all cell organelles
4
Use the diagram shown to answer the question. After an hour, the level of water in the thistle funnel will
Risposta
(A)
rise
5
Use the diagram shown to answer the question. The experiment above is used to demonstrate the process of
Risposta
(D)
osmosis
6
Use the diagram shown to answer the question. In plant cells, the role of the membrane is played by the
Risposta
(B)
cell wall
7
Red blood cells were found to have burst open after being placed in distill for an hour. This phenomenon is known as
Risposta
(C)
haemolysis
8
The curvature movement of plants in response to the stimulus of water is called
Risposta
(A)
hydrotropism
9
The overall reaction in glycolysis can be summarised as
Which of the following structures is not a skeletal material?
Risposta
(D)
Muscle
12
The reason why the flow of blood through the capillaries is very slow is
Risposta
(D)
Their large numbers and one cell-thick walls enables them to provide a large surface area through which materials can be exchanged between the blood and the body cells.
13
Which of the following groups of organisms has kidney as the excretory organ?
Risposta
(A)
Fishes, amphibians, birds, man
14
Which of the following features is not a characteristic of arteries? Arteries
Risposta
(A)
possess valves at internals throughout their length
15
The graph below shows the results of a laboratory investigation which measured the body temperatures of a lizard and a bird under changing artificial conditions. Use it to answer the question.
Which of the statements below is valid?
Risposta
(B)
The body temperature of the bird varied less than that of the lizard during changes in environmental temperature
16
The graph above shows the results of a laboratory investigation which measured the body temperatures of a lizard and a bird under changing artificial conditions. Use it to answer the question.
What physiological term can be used to describe the regulation of the body temperature of the of the Lizard?
Risposta
(C)
Poikilothermy
17
The reason why hospitals use saline solutions as drip Instead of water is
Risposta
(C)
to maintain the composition of body fluids
18
The part of the ear which contains nerve cells sensitive to sound vibrations is the
Risposta
(A)
cochlea
19
Spectacles with convex lenses correct long-sightedness by
Risposta
(A)
converging the light rays before they enter the eye
20
A seed of a flowering plant can best be described as
Risposta
(B)
the developed ovule
21
Which of the following processes removes carbon from the atmosphere?
Risposta
(B)
photosynthesis
22
Which of the following cycles involves the process of precipitation and transpiration?
Risposta
(A)
water cycles
23
What is the critical limiting factor for plants below the photic zone in an aquatic ecosystem?
Risposta
(C)
intensity of light
24
Which of the following instruments is used to estimate the number of plants in a habitat?
Risposta
(C)
quadrant
25
Which of the following statements is true about sandy soil?
Risposta
(B)
is light and easy to dig
26
Which of the following organisms is a primary consumer?
Risposta
(B)
sheep
27
Study the diagram of a food chain shown and use; it to answer the question.
P ---> Q ---> R ---> S ---> T
The organism designated P in the food chain above is normally sustained by energy from
Risposta
(A)
sunlight
28
Study the diagram of a food chain shown and use; it to answer the question.
P ---> Q ---> R ---> S ---> T
Which of the following statements best describes the organism designated R? It
Risposta
(D)
is a secondary consumer
29
Which of the following diseases is not hereditary?
Risposta
(B)
Scabies
30
The immediate product of meiosis in flowering plants is the
Risposta
(B)
gametophyte
31
DNA in eukaryotic cells is contained in the
Risposta
(B)
nucleus
32
A woman who is heterozygous for the disease haemophilia marries a man who is haemophilic. What percentage of their offspring would have the disease?
Risposta
(C)
50%
33
Cytokinesis of mitosis is a process that ensures that
Risposta
(A)
each daughter cell gets the necessary organelles
34
An animal which is active during the day is known as a
Risposta
(B)
diurnal animal
35
Evidence of evolution include the following except?
Risposta
(D)
geographical distribution of organisms
36
Use the diagram to answer the question. The diagram shows that the organisms are
Risposta
(C)
oviparous
37
Use the diagram to answer the question. The breeding posture illustrated in the diagram is knows as
Risposta
(B)
amplexus
38
An accurate identification of a rapist can be carried out by conducting
Risposta
(B)
DNA analysis
39
A boy who is fond of swimming in a pond finds himself passing urine with traces of blood. He is like to have contracted?
Risposta
(A)
schistosomiasis
40
The flippers of a whale and the fins of a fish are examples of
Risposta
(D)
convergent evolution
41
The yellowish colored liquid component of blood that normally holds the blood cells in suspension is
Risposta
(B)
plasma
42
The function of pith in plant is
Risposta
(B)
Pith, or medulla, is a tissue in the stems of vascular plants. Pith is composed of soft, spongy parenchyma cells, which store and transport nutrients throughout the plant.
43
A pollutant that is mostly associated with acid rain is
Risposta
(A)
Nitrogen oxides
44
What is the function of contractile vacuole in paramecium?
Risposta
(D)
Gets rid of excess water
45
An organism which exhibit extracellular digestion is
Risposta
(D)
Rhizopus
46
How many days is used for incubation of an egg to release chick
Risposta
(A)
21
47
The four classes of cnidarian include the following except
Risposta
(A)
Turbellaria
48
What would happen if solution Y is more concentrated than solution X in fig 2
Risposta
(D)
The level of Y would rise, X would fall.
49
Physiological adaptation to very dry conditions in animal demonstrates
Risposta
(C)
Aestivation
50
The hormones secreted by pancreas serves to
Risposta
(C)
Lower blood glucose level
51
Blood circulation in a mammal is said to be double because
Risposta
(A)
It passes twice through the heart in a complete circuit
52
Examples of animals with mammary glands include the following except
Risposta
(D)
Hen
53
The hygrometer is used for measuring
Risposta
(A)
Relative Humidity
54
Mineral salts can be absorbed into roots by
Risposta
(C)
Diffusion and active transport
55
Which is an Animal without red blood cells
Risposta
(B)
Earthworm
56
The temporary union of two organisms and the exchange of micronuclear elements is called
Risposta
(A)
Conjugation
57
A plant tissue that carries water and mineral salt is
Risposta
(A)
Xylem
58
Which of the following relationship involves only one organism
Risposta
(A)
Saprophytism
59
Which parts provides food for the developing chick?
Risposta
(C)
3 and 4
60
The outer membrane that covers the brain is
Risposta
(B)
Dura mater
61
The process in which plant uses sunlight to synthesize nutrients from carbon dioxide and water is called
Risposta
(D)
Photosynthesis
62
Cold blooded animals are referred to as
Risposta
(A)
Poikilothermic
63
the vessel carrying oxygenated blood to the tissues is
Risposta
(A)
Arteries
64
Which of the following is a mixed gland
Risposta
(C)
Pancreas
65
A group of organism of the same species living together in a particular area is described as
Risposta
(C)
Population
66
Tikka disease is related with the crop:
Risposta
(C)
Groundnut
67
At which stage in this cycle can a man be infected?
Risposta
(B)
4
68
Total salt content in blood is about
Risposta
(D)
0.85 to 0.9%
69
The role of scolex in tapeworm is to
Risposta
(B)
attachment to the host
70
Which of the following animals is cold blooded
Risposta
(B)
Lizard
71
The energy released by 1 gram of glucose is
Risposta
(B)
4 kcal
72
What is the function of trichocyst in paramecium
Risposta
(B)
Defence
73
Man can contact tapeworm through
Risposta
(A)
ingesting uncooked meat
74
An example of a radially symmetrical organisms is
Risposta
(B)
Hydra
75
Maltose is combination of glucose and
Risposta
(A)
glucose
76
The vitamin which is important in the formation of the retina pigment is
Risposta
(A)
Vitamin A
77
In the egg of a bird, the embryo is located in the
Risposta
(B)
Yolk
78
The greatest amount of energy would be obtained by the Oxidation of 100kg of
Risposta
(B)
Butter
79
Ozone hole refers to
Risposta
(C)
decrease in thickness of ozone layer in stratosphere
80
Accessory material in a chicken egg include the following except
Risposta
(D)
Germinal disc
81
Swollen, bleeding gums are another common sign of which vitamin
Risposta
(C)
Vitamin C
82
Double fertilisation is a unique features of
Risposta
(A)
Angiosperms
83
The gland that is present close to Trachea
Risposta
(D)
Thyroid
84
A distinguishing feature of mammals is the possession of
Risposta
(D)
Hair
85
Examples of micronutrients include the following except
