1993 - WAEC Biology Past Questions and Answers - page 5
41
Which of the following substances cannot control the growth of harmful micro organisms?
A
Antibiotics
B
Hypertonic salt solution
C
Disinfectants
D
isotonic sugar solution
correct option: d
Users' Answers & Comments42
Which of the following is the underlining Principle in the adoption of biological control of pests?
A
Knowledge of agricultural practices by the farmer
B
Relationship between plants and animals
C
The presence of poisonous chemicals in the farm
D
The relative population of plants and animals in the farm
correct option: e
Users' Answers & Comments43
The largest game reserve in Nigeria is the
A
Kianji game reserve in Niger state
B
Zamfara Forest Reserve In Sokoto state
C
Yankari game reserve in Bauchi state
D
Borgu park reserve in Niger state
correct option: c
Users' Answers & Comments44
The following agencies are responsible for conservation of in Nigeria except
A
Forest department
B
Nigerian conservation society
C
Games reserve authority
D
Nigerian red cross society
correct option: d
Users' Answers & Comments45
The table below indicates the result of an experiment during which grains of different colours in two maize cobs were counted
Which of the following ratios agrees with the result?
| Maize cob | White | Pink | Red |
| I | 30 | 60 | 30 |
| II | 50 | 99 | 49 |
Which of the following ratios agrees with the result?
A
9:3:3
B
1:2:1
C
1:3:1
D
2:1:1
correct option: b
Users' Answers & Comments46
One of the factors that must be considered for safe blood transfusion is
A
social class of the donor
B
age of the recipient
C
rhesus factors of the donor and the recipient
D
nationality of the donor
correct option: c
Users' Answers & Comments47
One of the major criticisms against ‘Mendelian laws is that they do not recognize that
A
one trait is often controlled by many pairs of genes
B
single factor inheritance is never a reality
C
complete dominance is always possible
D
incomplete dominance is not possible
correct option: a
Users' Answers & Comments48
Identical twins inherit their genes from
A
the same ovum and different sperms
B
the same sperm and different ova
C
different sperms and many ova
D
the same ovum and the same sperm
correct option: d
Users' Answers & Comments49
The offspring produced when pure strains interbreed is described as
A
dominance
B
phenotype
C
allele
D
genotype
correct option: e
Users' Answers & Comments50
Which of the following diseases or disorders can be prevented by the application of the knowledge of
heredity through marriage counselling?
heredity through marriage counselling?
A
Sickle cell anaemia
B
Haemophilia
C
Diabetes mellitus
D
Colour blindness
correct option: a
Users' Answers & Comments