Question 1 of 20 43 total questions
Which structure of the mammalian ear when removed will affect the maintenance of balance?
A auditory canal
B ear ossicles
C pinna
D semi-circular canals
E tympanium
Which one is NOT an excretory product of man?
A carbon(iv)oxide
B oxygen
C nitrogenous wastes
D salts
E respiration
The most likely mode of an organism that possesses attachment structure, thin outer surface layer and absence of an elaborate digestive tract is
A Autotropic
B holophytic
C parasitic
D saprophytic
E symbiotic
What is the result of placing a red blood cell in a hypertonic solution ?
A crenation
B haemolysis
C osmosis
D plasmolysis
E wilting
Two identical twin boys had different finger print. This proves that
A finger print is a sex-linked character
B the genotypes of the twins are similar
C the phenotypes of the twins are similar
D there are morphological variations
E there are physiological variation in the twins
The part of the fruit which serves a protective function is called
A endocary
B epicarp
C mesocarp
D pericarp
E testa
Modern method of classification of living things is based on similarity of?
A colour
B habitat
C shape
D size
E structure
Which of the following is NOT a natural source of energy ?
A coal
B electricity
C food
D sun
E water
An essential with the dental formula I 0/3 : C 0/1 : P 3/3 : M 3/3 is most likely adapted for ___________ nutrition .
A carnivorous
B herbivorous
C holophytic
D ominivorous
E parasitic
The release of sperms through the urethral opening into the vagina is called?
A copulation
B ejaculation
C fertilization
D spermatogenesis
E urination
Which of these statements is NOT an idea contained in Lamarck’s theory of evolution.?
A acquired characters are inheritable
B changes in the environment result in corresponding changes in the species
C environmental changes cause the organism to acquire new structures as an adjustment to a new prevailing environment
D organisms develop specialized characteristic by use and disuse of organs
E organisms tend to an increase in number at an exponential rate
Lianas is to tropical rain forest as an extensive root system is to ---------------- habitat
A afro-alpine
B estuarine
C fresh - water
D grass-land
E marine
Which material is NOT necessary for the manufacture of plant food?
A carbon(iv)oxide
B chloropyll
C oxygen
D sunlight
E water
Which of the following agricultural activities has the least harmful effect on the environment ?
A application of fertilizers
B practicing crop rotation
C practicing monocropping
D spraying herbicides
E spraying pesticides
When a student suddenly runs into a snake on a pathway, which of these chemical messengers are released ?
A adrenaline
B insulin
C oestrogen
D testosterone
E thyroxine
A common characteristic of ALL living things is
A gametogenesis
B hibernation
C photosynthesis
D phototropism
E respiration
An organism existing at the colonial level of life is
A chlamydomonas
B euglena
C paramecium
D spirogyra
E volvox
Root pressure and the transpiration pull are biophysical processes which account for the?
A ascent of water into leaves
B exchange of gases at leaf surfaces
C movement of manufactured food from leaves to storage tissues
D opening and closing of stomata
E Release of energy from glucose molecules
Which statement about decomposers is NOT true?
A They are saprophytes
B They carry on intra-cellular digestion
C They facilitate the cleansing of the environment
D They facilitate the recycling of nutrients
E They form a link between autotrophs and heterotrophs
Which of these pairs best illustrates symbiotic association?
A dodder on green plants
B ferns growing on palm trees
C lice on hair of mammals
D sea anemone attached to hermit crab
E tick found on body of cow
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