Question 1 of 20 5,032 total questions
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
The process which ensures that the chromosome number for each species of organism remains constant from generation to generation is called
A fission
B fusion
C meiosis
D mitosis
E oogenesis
Which of the following sequences best illustrates a food chain in an aquatic habitat ?
A algae → fungi → toad → snake
B diatoms → tadpole → fish → kingfisher
C grass → grasshopper → toad → whale
D phytoplankton → fish → snake → kingfisher
E zooplankton → tadpoles → fish → kingfisher
The streaming movement of cytoplasm observed in a freshly cut leaf of a water plant is termed
A amoeboids
B centrifugal motion
C ciliary motion
D cyclosis
E osmosis
During blood transfusion, agglutination could be prevented if a patient having blood group O is given blood
Which of the following terms is not associated with fingerprint and classification?
A Whorl
B Contour
C Arch
D Loop
Which of the following represents Mendel’s second law of inheritance? The factors for two pairs of contrasting
A dependent on each other
B on homologous chromosomes
C allelomorphic
D inherited independently of each other
The concept of use and disuse of parts was postulated by
A Darwin
B Larmarck
C Miller
D Wallace
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