Question 1 of 20 2,572 total questions
The diseases caused by water-borne pathogens include
A gonorrhoea and poliomyelitis
B typhoid and syphilis
C tuberculosis and cholera
D typhoid and cholera
An indigenous method of renewing and maintaining soil fertility is by
A clearing farms by burning
B planting one crop type
C adding inorganic fertilizers yearly
D crop rotation and shifting cultivation
The abiotic factors that control human population include
A disease and famine
B space and rainfall
C flooding and earthquake
D temperature and disease
The carrying capacity of a habitat is reached when the population growth begins to
A increase slowly
B increase exponentially
C slow down
D remain steady
The most likely first colonizers of a bare rock are
A mosses
B ferns
C lichen
D fungi
Which of the following animals can exist solely on the water they get from food and metabolic reactions?
A forest arboreal dweller
B Desert dwellers
C forest-ground dweller
D rainforest dwellers
The presence of stilt roots, pneumatophores, sunken stomata and salt glands are adaptive features of plants found in the
A tropical rainforest
B mangrove swamps
C gressland
D montane forest
Organisms living in an estuarine habitat are adapted to
A withstand wide fluctuations in temperature
B survive only in water with low salinity
C withstand wide fluctuations in salinity
D feed only on phytoplankton and dead organic matter
Plants of temperate origin can be grown in tropical areas in the vegetation zones of the
A rain forest
B guinea savanna
C sudan savanna
D montane forest
The water cycle is maintained mainly by
A evaporation of water in the environment
B evaporation and condensation of water in the environment
C condensation of water in the environment
D transpiration and respiration in plants
The autonomic nervous system consists of neurons that control the
A voluntary muscles
B heart beat
C tongue
D hands
Plant growth can be artificially stimulated by the addition of
A gibberellin
B kinin
C abscisic acid
D ethylene
An example of a fruit that develops from a single carpel is
A okro
B tomato
C bean
D orange
Which of the following is involved in secondary thickening in plants?
A Collenchyma and xylem cells
B Vascular cambium
C Cork cambium and sclerenchyma
D Vascular cambium and cork cambium
In the kidney of mammals, the site of ultrafiltration is the
A uriniferous tubule
B Bowman's capsule
C loop of Henle
D renal tubule
Which of the following is a polysaccharide?
A Glucose
B Sucrose
C Maltose
D Cellulose
A function of the hydrochloric acid produced in the human stomach during digestion is to
A neutralise the effect of bile
B coagulate milk protein and emulsify fats
C stop the action of ptyalin
D break up food into smaller particles
Which of the following organisms is both parasitic and autotrophic?
A Sundew
B Loranthus
C Rhizopus
D Tapeworm
In plants which of the following is required in minute quantities for growth?
A Copper
B Potassium
C Phosphorus
D Sodium
In the mammalian male reproductive system, the part that serves as a passage for both urine and semen is the
A urethra
B urter
C bladder
D seminal vesicle
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