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Which of the following has the most primitive respiratory system?
ARat
BFish
CToad
DGrasshopper
ELizard
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Question 2
waec1988
The rate of transportation will be highest In
AI
BII
CIII
DIV
EV
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Question 3
waec1988
The plants best adapted for life in the desert are
AI and IV only
BII and IV only
CIll and IV only
DlV and V only
EI Il Ill and V
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Question 4
waec1988
Which of the following is not true about gene mutation? It
Aintroduces new traits into a population
Bcauses changes in the DNA
Cmay have unnoticeable effect on the phenotype
Dalways affects the chromosome number
Eis a source of new genes
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Question 5
waec1988
Species can be defined as the group of organisms that
Aresemble each other and live in the same habitat
Bare of common origin and are always found together
Cresemble each other and can interbreed freely
Dresemble each other and occupy the same niche
Eare of common origin but cannot interbreed freely
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Question 6
waec1988
The change in colour of the chameleon serves as a means of
Aattraction to the opposite sex
Brepulsion of the enemy
Ca camouflage from a predator
Dregulation of body temperature
E. production of a variety of skin pigments
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Question 7
waec1988
When large numbers of organisms share limited space and resources the result is
Aimmigration
Bcommensalism
Csymbiosis
Dextinction
Ecompetition
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Question 8
waec1988
Increasing specialization of structure and function among animals of the same class and order for survival in new and different environments is called
Aadaptive radiation
Bphylogeny
Chomology
Danalogy
Eontogeny
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Question 9
waec1988
A man with blood group A (TAP) married a woman with blood group O (pp). Which of the following is the
probable ratio of the blood groups of the offspring?
A1:1
B3:1
C2:1:1
D1:2:1
E4:1
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Question 10
waec1988
If a cross is made between a pure-breeding red flowered plant and a pure-breeding white flowered plant
where R is dominant for red flower and r is recessive for white, the most likely result of F generation will be
A75% red flowers and 25% white flowers
Ball red flowers
C75% white flowers and 25% red flowers
D50% red flowers and 50% white flowers
Eall white flowers
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Question 11
waec1988
The haploid number of chromosomes in man is
A48
B46
C42
D24
E23
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Question 12
waec1988
Which of the following best describes the homologous chromosomes? They are
Aa product of the division of a chromosome
Btwo identical chromosomes from each parent
Cchromosomes arranged on spindle fibres during cell division
Ddaughter chromatides formed during meiotic division
Echromosomes during telophase of mitotic division
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Question 13
waec1988
Which of the following is not a constituent of DNA?
APurine
BPhosphate
CCystocine
DDeoxyribose
EUracil.
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Question 14
waec1988
Assuming that ‘A’ is gene for normal skin and it is dominant, while ‘a’ is gene for albinism and it is recessive,
what is the likely genotype of a couple which had 50% normal and 50% albinos?
AAA,Aa
BAA,aa
CAa, Aa
DAa, aa
EAA,AA
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Question 15
waec1988
Which of the following major ideas were proved by Gregor Mendel?
AThere is a tendency among organisms `to increase rapidly in number if conditions are favourable
BThere is a struggle for existence among a very large number of offspring
CNature selects organisms which will survive to produce their kind
DAll species exhibit structural and functional variations
ECharacteristics of an organism are controlled by genes occurring in pairs
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Question 16
waec1988
During blood transfusion, agglutination may occur as a result of the reaction between
Asimilar antigens and antibodies
Bcontrasting antigens and antibodies
Ctwo different antigens
Dtwo different antibodies
Ewhite blood cells from the two individuals.
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Question 17
waec1988
Which of the following .is not part of the objectives of conservation of natural resources?
ATo eliminate wild animals in order to enable other plants and animals survive
BTo use our resources on sustained yield basis
CTo guard against indiscriminate killing of plants and animals
DTo guard against the extinction and exhaustion o natural resources
ETo protect the environment
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Question 18
waec1988
Which of the following steps would not be taken to protect or conserve fishing grounds from over-exploitation?
A. Use of nets with all sizes of mesh
BUse of nets with a particular mesh size
CBan on harvesting of some species
DRegulating the size of ships allowed into fishing grounds
ELimiting the period of fishing in the waters
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Question 19
waec1988
A constituent of the exhaust gases of motor vehicles which causes serious air pollution is
