Question 1 of 20 107 total questions
The number of individuals in a habitat in relation to the unit space available to each organism is referred to as the
A birth rate
B density
C mortality
D frequency
E dispersion
fewer number of trees is characteristic of the Savanna zones of Nigeria because
A there is too much sunlight
B there is limited amount of rainfall
C they are usually exposed to grazing animals
D they are covered by high mountains
E the farmers always engage in bush-burning
Which of the following would be the primary producer in a food chain?
A Saprophytes
B Herbivores
C Carnivores
D Green plants
E Parasites
Puddles,ponds, rivers, lakes, seas and ocean are grouped together as
A ecosystem
B biosphere
C terrestrial habitat
D marine habitat
E aquatic habitat
The female part of a flower consist of the
A stigma, style and ovary
B petals, sepals and anthers
C stigma, sepals and anthers
D filaments, style and pollen grain
E sepals, stigma and pollen grain
Natality is a factor affecting population density because it involves
A increase in population due to immigration
B increase in population due to emigration
C the number of mature females in the population
D the number of females in the population
E the number of all young ones produced in the population
The part of the alimentary system of a bird where grinding of maize occurs is the
A crop
B stomach
C gizzard
D cloaca
E rectum
Which of the following adapts the aorta to the high pressure of the blood from the heart?
A Thin walls
B Fragile membrane
C Thick elastic walls
D stiff walls
E Narrow lumen
In testing for a reducing sugar, the food substance is usually warmed with
A sulphuric acid
B million's reagent
C sudan III
D Benedicts's solution
Pellagra can be prevented by taking food rich in?
A vitamin A
B vitamin B
C Vitamin D
D calcium
E iodine
During which of the following processes is food for animals produced?
A Photosynthesis
B Respiration
C Nutrition
D Digestion
E Transportation
The bicuspid valve is located between
A left auricle and left ventricle
B right auricle and right ventricle
C left and right ventricle
D left and right auricle
E left auricle and right ventricle
Which of the following is not seen in the transverse section of a young monocotyledonous stem?
A Parenchyma
B Phloem
C Xylem
D Cambium
E Sclerenchyma
Which of the following substance from the mother's blood diffuse through the placenta into the blood vessels of the feotus?
A Carbon dioxide and oxygen
B Glycogen and starch
C Urea and carbon dioxide
D Glucose and oxygen
E Digested food and carbon dioxide
Which of the following is not part of the female reproductive system?
A Ovary
B Seminal vessicles
C Uterus
D Vagina
E Fallopian tube
Which part of the ear is responsible for the maintenance of balance?
A Ossicles
B Tympanic membrane
C Eustachian tube
D semicircular canals
E Cochlea
The part of the brain responsible for the control the controls of voluntary movement and interpretation of sensation is the
A cerebrum
B cerebellum
C optic lobe
D medulla oblongata
E olfactory lobe
The human skin is regarded as a sense organ because it
A separates the body from the outside world
B protects the body from cold and heat
C regulates the water content of the body
D has an outer layer of dead cells
E has nerve endings
If a germinating seed is attached horizontally on a revolving klinostat, what will be the effect of the seedling after three days? The
A plumule will curve vertically upward while the radicle will curve towards the ground
B plumule and radicle will not show any curvature
C radicle will curve towards the ground while the plumule will not show any curvature
D plumule will curve vertically upward while the radicle will not show any curvature
E plumule and radicle will curve towards the ground
Over-secretion of thyroxin is likely to lead to
A thinness in body
B sluggishness
C cretinism in infant
D reduced metabolism
E dwarfism
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