Question 1 of 20 108 total questions
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
Which of the following structures are adjusted in focusing the image of a
A I and II
B II and III
C III and VII
D IV and V
E V and VII
The light ray entering the eye goes through the following route
A II, III, I, IV, V
B II, I, VII, III
C II, I, III, IV
D V, VI, III, I
E I, VII, III, IV, V
The parts labelled IV, V and VI respectively are the
A ciliary body, optic nerve and yellow spot
B . blind spot, optic nerve and suspensory ligament
C vitreous humour, yellow spot and optic nerve
D blind spot, optic nerve and pupil
E yellow spot, retina and choroid layer
How would you describe the position of the ovary in relation to the
A Superior
B lnferior
C Semi-inferior
D Gamosepalous
E Polysepalous
The function of the part labelled l is to
A receive pollen grains
B produce nectar
C store the pollen grains
D store the ovules
E produce the male gametes
What is the function of the part labelled ll?
A Attraction of insects
B Secretion of nectar
C Protection of the stigma
D Formation of fruit wall
E Attachment of flower to the shoot.
The process whereby microorganisms can convert atmospheric nitrogen into nitrogenous compound is
A nitrogen cycle
B nitrogen fixation
C denitrification
D putrefaction
E decomposition
Which of the following organisms reduces nitrates in the soil to gaseous nitrogen?
A Euglena
B Protozoan
C Denitrifying bacterium
D Parasitic mould
E Nitrifying bacterium
Which of the following mineral salts is a trace element?
A Zinc
B CArbon
C Hydrogen
D Potassium
E Calcium
Which of the following is not a courtship behaviour exhibited of animals?
A Pairing
B Display
C Seasonal migration
D Hibernation
E Territorialism.
This defect can be corrected by the use of
A convex lens
B concave lens
C cylindrical lens
D surgical operation
E biconcave lens
Which type of eye defect IS illustrated in the diagram above?
A Hypermetropia
B myopia
C Cataract
D Astigmatism
E Glaucoma
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