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Worksheetsbreathing mechanism
Total questions: 12
Worksheet time: 9mins
which of the following is the charactheristics of the lamella membrane of fish that ease the absorption and transportation of oxygen and carbon dioxide?
thick and moist
smooth and dry
thin and supplied with many blood capillaries
thin and highly permeable
what structure in the respiratory system of the fish increases the surface area for gaseous exchange?
filament
gill arch
operculum
base of the mouth
what is the respiratory aperture for fish?
nostrils
mouth and operculum
spiracle
what is the breathing mechanism of fish?
contraction and relaxation of the intercostal musclesand diaphragm muscles
rapid movement of the buccopharyngeal cavity floor and elasticity of the lungs
contraction and relaxation of abdominal muscles
movements of the floor of the buccal cavity and operculum
gaseous exchange between blood and water in fish occurs through
diffusion
active transport
what causes the water to flow through the operculum opening of the fish during exhalation?
lower pressure in the buccal cavity
higher pressure in the cavity buccal
higher pressure in the buccal cavity
what is the name of the respiratory structure of fish
filament
gill arches
blood capilaries
gills
what are the many thin and flat projections called in the filament?
operculum
bladder
lamella
ureter
what are the row of filaments supported by in the gills?
operculum
gill arches
blood vessels
filaments
when fish swim, they open and close their operculum?why?
for ventilation process to occur
for inhalation process to occur
for exhalation process to occur
for transpiration process to occur
what happens to the opercular cavity and operculum opening when the fish’s mouth opens?
opercular cavity is reduced, operculum opening is opened
opercular activity is enlarged, operculum opening is closed
during fish exhalation, where does the water enter from?
buccal cavity
teleost
gill lamella
cordata
