A group of closely related organisms capable of interbreeding to produce the fertile offspring are known as members of a
Απάντηση
(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
Απάντηση
(A)
able to carry out holozoic nutrition
3
The cytoplasm of a cell is considered a very important component because it
Απάντηση
(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
Απάντηση
(A)
rise
5
Use the diagram shown to answer the question. The experiment above is used to demonstrate the process of
Απάντηση
(D)
osmosis
6
Use the diagram shown to answer the question. In plant cells, the role of the membrane is played by the
Απάντηση
(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
Απάντηση
(C)
haemolysis
8
The curvature movement of plants in response to the stimulus of water is called
Απάντηση
(A)
hydrotropism
9
The overall reaction in glycolysis can be summarised as
Which of the following structures is not a skeletal material?
Απάντηση
(D)
Muscle
12
The reason why the flow of blood through the capillaries is very slow is
Απάντηση
(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?
Απάντηση
(A)
Fishes, amphibians, birds, man
14
Which of the following features is not a characteristic of arteries? Arteries
Απάντηση
(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?
Απάντηση
(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?
Απάντηση
(C)
Poikilothermy
17
The reason why hospitals use saline solutions as drip Instead of water is
Απάντηση
(C)
to maintain the composition of body fluids
18
The part of the ear which contains nerve cells sensitive to sound vibrations is the
Απάντηση
(A)
cochlea
19
Spectacles with convex lenses correct long-sightedness by
Απάντηση
(A)
converging the light rays before they enter the eye
20
A seed of a flowering plant can best be described as
Απάντηση
(B)
the developed ovule
21
Which of the following processes removes carbon from the atmosphere?
Απάντηση
(B)
photosynthesis
22
Which of the following cycles involves the process of precipitation and transpiration?
Απάντηση
(A)
water cycles
23
What is the critical limiting factor for plants below the photic zone in an aquatic ecosystem?
Απάντηση
(C)
intensity of light
24
Which of the following instruments is used to estimate the number of plants in a habitat?
Απάντηση
(C)
quadrant
25
Which of the following statements is true about sandy soil?
Απάντηση
(B)
is light and easy to dig
26
Which of the following organisms is a primary consumer?
Απάντηση
(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
Απάντηση
(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
Απάντηση
(D)
is a secondary consumer
29
Which of the following diseases is not hereditary?
Απάντηση
(B)
Scabies
30
The immediate product of meiosis in flowering plants is the
Απάντηση
(B)
gametophyte
31
DNA in eukaryotic cells is contained in the
Απάντηση
(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?
Απάντηση
(C)
50%
33
Cytokinesis of mitosis is a process that ensures that
Απάντηση
(A)
each daughter cell gets the necessary organelles
34
An animal which is active during the day is known as a
Απάντηση
(B)
diurnal animal
35
Evidence of evolution include the following except?
Απάντηση
(D)
geographical distribution of organisms
36
Use the diagram to answer the question. The diagram shows that the organisms are
Απάντηση
(C)
oviparous
37
Use the diagram to answer the question. The breeding posture illustrated in the diagram is knows as
Απάντηση
(B)
amplexus
38
An accurate identification of a rapist can be carried out by conducting
Απάντηση
(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?
Απάντηση
(A)
schistosomiasis
40
The flippers of a whale and the fins of a fish are examples of
Απάντηση
(D)
convergent evolution
41
The yellowish colored liquid component of blood that normally holds the blood cells in suspension is
Απάντηση
(B)
plasma
42
The function of pith in plant is
Απάντηση
(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
Απάντηση
(A)
Nitrogen oxides
44
What is the function of contractile vacuole in paramecium?
Απάντηση
(D)
Gets rid of excess water
45
An organism which exhibit extracellular digestion is
Απάντηση
(D)
Rhizopus
46
How many days is used for incubation of an egg to release chick
Απάντηση
(A)
21
47
The four classes of cnidarian include the following except
Απάντηση
(A)
Turbellaria
48
What would happen if solution Y is more concentrated than solution X in fig 2
Απάντηση
(D)
The level of Y would rise, X would fall.
49
Physiological adaptation to very dry conditions in animal demonstrates
Απάντηση
(C)
Aestivation
50
The hormones secreted by pancreas serves to
Απάντηση
(C)
Lower blood glucose level
51
Blood circulation in a mammal is said to be double because
Απάντηση
(A)
It passes twice through the heart in a complete circuit
52
Examples of animals with mammary glands include the following except
Απάντηση
(D)
Hen
53
The hygrometer is used for measuring
Απάντηση
(A)
Relative Humidity
54
Mineral salts can be absorbed into roots by
Απάντηση
(C)
Diffusion and active transport
55
Which is an Animal without red blood cells
Απάντηση
(B)
Earthworm
56
The temporary union of two organisms and the exchange of micronuclear elements is called
Απάντηση
(A)
Conjugation
57
A plant tissue that carries water and mineral salt is
Απάντηση
(A)
Xylem
58
Which of the following relationship involves only one organism
Απάντηση
(A)
Saprophytism
59
Which parts provides food for the developing chick?
Απάντηση
(C)
3 and 4
60
The outer membrane that covers the brain is
Απάντηση
(B)
Dura mater
61
The process in which plant uses sunlight to synthesize nutrients from carbon dioxide and water is called
Απάντηση
(D)
Photosynthesis
62
Cold blooded animals are referred to as
Απάντηση
(A)
Poikilothermic
63
the vessel carrying oxygenated blood to the tissues is
Απάντηση
(A)
Arteries
64
Which of the following is a mixed gland
Απάντηση
(C)
Pancreas
65
A group of organism of the same species living together in a particular area is described as
Απάντηση
(C)
Population
66
Tikka disease is related with the crop:
Απάντηση
(C)
Groundnut
67
At which stage in this cycle can a man be infected?
Απάντηση
(B)
4
68
Total salt content in blood is about
Απάντηση
(D)
0.85 to 0.9%
69
The role of scolex in tapeworm is to
Απάντηση
(B)
attachment to the host
70
Which of the following animals is cold blooded
Απάντηση
(B)
Lizard
71
The energy released by 1 gram of glucose is
Απάντηση
(B)
4 kcal
72
What is the function of trichocyst in paramecium
Απάντηση
(B)
Defence
73
Man can contact tapeworm through
Απάντηση
(A)
ingesting uncooked meat
74
An example of a radially symmetrical organisms is
Απάντηση
(B)
Hydra
75
Maltose is combination of glucose and
Απάντηση
(A)
glucose
76
The vitamin which is important in the formation of the retina pigment is
Απάντηση
(A)
Vitamin A
77
In the egg of a bird, the embryo is located in the
Απάντηση
(B)
Yolk
78
The greatest amount of energy would be obtained by the Oxidation of 100kg of
Απάντηση
(B)
Butter
79
Ozone hole refers to
Απάντηση
(C)
decrease in thickness of ozone layer in stratosphere
80
Accessory material in a chicken egg include the following except
Απάντηση
(D)
Germinal disc
81
Swollen, bleeding gums are another common sign of which vitamin
Απάντηση
(C)
Vitamin C
82
Double fertilisation is a unique features of
Απάντηση
(A)
Angiosperms
83
The gland that is present close to Trachea
Απάντηση
(D)
Thyroid
84
A distinguishing feature of mammals is the possession of
Απάντηση
(D)
Hair
85
Examples of micronutrients include the following except
