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