Question 1 of 20 5,032 total questions
Which of the following diseases or disorders can be prevented by the application of the knowledge of
A Sickle cell anaemia
B Haemophilia
C Diabetes mellitus
D Colour blindness
E River blindness
The offspring produced when pure strains interbreed is described as
A dominance
B phenotype
C allele
D genotype
E hybrid
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
E many ova and many sperms
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
E hybrids exist in living organisms
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
E weight of the recipient
The table below indicates the result of an experiment during which grains of different colours in two maize cobs were counted
Maize cob
White
Pink
Red
I
30
60
30
II
50
99
49
A 9:3:3
B 1:2:1
C 1:3:1
D 2:1:1
E 2:3:2
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
E Ministry of agriculture and Natural resources
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
E Oban hill Game reserve in Cross River state
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
E The predator prey relationship in ecological community
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
E Antiseptics.
The use of predators or parasites to control pests in the farm is known as
A predator control
B chemical control
C biological control
D animal control
E parasitic control
Which of the following is not a characteristic of overcrowding in plant and animal community?
A Population outstripping available space
B Population exceeding available food
C Competition within the population
D increase in primary production
E Population increasing at the same rate as the birth rate
A climax community is characterised by
A a stable composition of plant and animal species
B rapid changes in the composition of species
C constant changes in appearance of the habitat
D different species occurring at different times
E gradual change in animal population
Which of the following is not an adaptation of plants or animals to desert environment?
A Well developed tap root system
B Small leaves with thick Epidermis
C Stems with spike-like leaves
D Metabolic waste in the form of uric acid in some animals
E Broad leaves for storage
Which of the following water pollutant may contain organisms that cause dysentery?
A Pesticides
B Sewage
C Industrial wastes
D Fertilizers
E Crude oil.
Sea water taken in by a living organism can be recycled into the atmosphere through all the following
A transpiration
B digestion
C excretion
D respiration
E decay
In which of the following processes is carbondioxide not given out?
A Respiration in plants
B Decay of organism
C Burning of organic matter
D Burning of fuels
E During photosynthesis.
Which of the following explains the term pyramid of numbers?
A The number of organisms in a trophic level
B The relationship between plants in different trophic levels
C The number of saprophytes and parasites in a habitat
D The number of predators in a habitat
E Progressive decrease in the number of individuals from lower to higher trophic level
The following are features of Northern Guinea Savanna except
A presence of tall trees with thick bark
B bare soil with very few trees
C presence of fire-resistant trees
D abundant herbivores
E predominance of woody trees.
Which of the following best describes a marine habitat? A large body of water A
A which has no distinctive colour or taste
B with high concentration of salt
C with tittle suspended materials
D with no water weeds
E which sustains no animal life
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