which of the following statements about living things is correct?
คำตอบ
(C)
most plants respond to stimulus slowly
2
Organ level of organization in living things is found in?
คำตอบ
(C)
kidney
3
Diagrams X and Y above are illustrations of transverse sections of a part of plants. study them and answer this question
which of the following statements is not correct? Diagrams X and Y are sections of
คำตอบ
(A)
roots
4
Diagrams X and Y above are illustrations of transverse sections of a part of plants, Study them and answer this question.
The part responsible for conducting water and dissolved mineral salts from the soil to the leaves is labelled
คำตอบ
(D)
IV
5
Diagrams X and Y above are illustrations of transverse sections of a part of plants, Study them and answer this question.
The part labelled Il is the?
คำตอบ
(A)
Pith
6
The organelles in cells which are also referred to as suicidal bags are the
คำตอบ
(B)
lysosomes
7
The process that brings about the shrinking of a spirogyra cell when placed in a strong solution is ?
คำตอบ
(C)
plasmolysis
8
The region of a plant stem in which cells divide to increase its diameter is
คำตอบ
(A)
cambium
9
The total number of caudal vertebrae in animals X and Y is 4 and 27 respectively. The animals are likely to be.
คำตอบ
(D)
humans and rat
10
Which of the following blood components has the greatest affinity for oxygen and carbon (IV) oxide?
คำตอบ
(B)
Erythrocyte
11
Use the following processes to answer this question.
I-Ribs move upward and outward
II- Diaphragm relaxes
IIl-Volume of thorax increases
IV-Air is forced out of the lungs
Which of the processes take place during inspiration?
คำตอบ
(A)
I and III only
12
Use the following processes to answer this question.
I-Ribs move upward and outward
II- Diaphragm relaxes
IIl-Volume of thorax increases
IV-Air is forced out of the lungs
which of the following processes is a direct result of contraction of the intercostal muscles?
คำตอบ
(A)
I
13
The table above shows the effect of hormones I,II,III and IV on some parts of the human body. Where (✓) represents effects and (X) represents no effect of hormone on the corresponding part of the body. study it and answer this question.
Which of the following hormones are l, II, Ill and IV respectively?
คำตอบ
(D)
Adrenaline,
ADH, Oestrogen, Glucagon
14
The table above shows the effect of hormones I,II,III and IV on some parts of the human body. Where (✓) represents effects and (X) represents no effect of hormone on the corresponding part of the body. study it and answer this question.
The hormone responsible for anxiety is?
คำตอบ
(A)
I
15
The diagram above is an illustration of some parts of a mammalian ear. Study it and answer this question.
The middle ear is connected to the pharynx by the part labelled
คำตอบ
(C)
III
16
The diagram above is an illustration of some parts of a mammalian ear. Study it and answer this question.
The parts labelled I are the?
คำตอบ
(B)
ossicles
17
The diagram above is an illustration of some parts of a mammalian ear. Study it and answer this question.
Which of the parts are correctly grouped?
คำตอบ
(D)
(Inner ear II) (Middle ear I, III) (Outer ear IV)
18
The diagrams above are illustrations of two different cells involved in biological processing in mammals. Study them and answer this question.
Which parts of P and Q fuse to complete the biological process?
คำตอบ
(A)
III and I
19
The diagrams above are illustrations of two different cells involved in biological processing in mammals. Study them and answer this question.
Which of the following statements about P and Q is correct?
คำตอบ
(D)
The union of both cells gives rise to a new mammal
20
The diagrams above are illustrations of two different cells involved in biological processing in mammals. Study them and answer this question.
If the number of chromosomes in the skin cells of mammals is 46, how many chromosomes would be found in P and Q respectively?
คำตอบ
(A)
23 and 23
21
In which of the following structures is simple sugar produced?
คำตอบ
(C)
Chloroplast
22
An evidence of the occurrence of photosynthesis in an experiment is the?
คำตอบ
(B)
release of oxygen
23
The major source of vitamin A are ?
คำตอบ
(A)
egg yolk, carrot and palm oil
24
Diagram J is a protease while diagrams K,L,M, and N are food substances, study them and answer this question.
Protease J would react with the particular illustrated substance because enzymes?
คำตอบ
(B)
are specific in their action
25
Diagram J is a protease while diagrams K,L,M, and N are food substances, study them and answer this question.
After a reaction between protease J and the food substance, the end product would be
คำตอบ
(C)
amino acids
26
The property of clayey soil that prevents it from supporting thick vegetation is its?
คำตอบ
(C)
tendency of becoming waterlogged
27
which of the following practices will not maintain soil fertility?
คำตอบ
(C)
tendency of becoming waterlogged
28
A group of organisms of the same species living in a particular place is known as
คำตอบ
(D)
population
29
The diagram below is an illustration of an experiment on sedimentation of soil, use it to answer this question.
The organic component of the soil is labelled
คำตอบ
(A)
I
30
The diagram below is an illustration of an experiment on sedimentation of soil, use it to answer this question.
The part labelled IV is
คำตอบ
(B)
sand
31
which of the follwing pyramids is not used in ecology? pyramid of
คำตอบ
(D)
orgsnisms
32
Study the food chain illustrated below and use it to answer this question.
J-K-L-M-N
Organism J is normally sustained by energy from?
คำตอบ
(D)
sunlight
33
Study the food chain illustrated below and use it to answer this question.
J-K-L-M-N
which of the following statements about organism L is correct?
คำตอบ
(D)
is a secondary consumer
34
Study the food chain illustrated below and use it to answer this question.
J-K-L-M-N
The position occupied by each of organisms J K L M N in the food chain is known as the
คำตอบ
(B)
trophic level
35
which of the following features is not an adaptation?
คำตอบ
(D)
hairy structures on the leaves to reduce water loss
36
The biological association that contributes directly to succession in a community is
คำตอบ
(A)
competition
37
The conservation of natural resources is enhanced by the following practices except
คำตอบ
(C)
poaching in game reserves
38
The burning of farmlands ahould be discouraged because?
คำตอบ
(A)
destroys organic components of the soil
39
The use of a lighter instead of matchsticks is a way of conserving
คำตอบ
(B)
forest
40
An accident victim was successfully transfused with blood from the father whose blood, group is AB. The blood group of the accident victim is
คำตอบ
(C)
AB
41
Which of the followig traits in humans is an example of physiological variation?
คำตอบ
(C)
tongue rolling
42
Individuals belonging to the blood group O are universal donors because ?
คำตอบ
(A)
antigens are absent in thier blood cells
43
Two tall plants were crossed and all the F1 plants were tall. when the F1 plants were selfed, some of the F2 plants were tall while others were short what are the possible genotypes of the original plants ?
คำตอบ
(D)
TT and Tt
44
Which of the following statements best describes a test cross?
คำตอบ
(C)
between the progeny of parents to ascertain external expressions
45
Which of the following statements about sex linked traits is not correct?
คำตอบ
(D)
males are never carriers since they only recieve one sex chromosome
