Today we planned to do a rat dissection, but due to the frosty state of our subjects, we have postponed this investigation until Tuesday. In the meantime, we will answer the questions we can, using digital resources:
The following posts are by students, about the structual, functional and behavioural features of vertebrates that live in arid environments, that enable them to balance their water requirements.
-Small size of the budgie means that the water requirements are minimal.
-Budgerigars save water by excreting thier waste as nitrogenous waste.
– the budgies will huddle together in dry weather to reduce water loss by reducing thier movement and loss of water through sweat glands.
-they eats seeds with a high water content
– the budgies excrete most of their nitrogenous waste as uric acid which can be contolled as to how dry or wet it is depending on water availability
Euro or wallaroo –
have bare muzzles
have large ears
can obtain all necessary water from food during dry spells
Structural features of the flounder
The flouder has a a minute body cavity that helps the flouder stay on the bottom of the ocean.
Lack of air bladder helps the flouder to stay on the bottom of the ocean.
Eyes on the up side of their body helps to spot pray and predators.
The top side of the flouders is dark and the bottom side is light.
They have strong teeth and jaw.
They have a large mouth.
Pusterior fin flatter and broader to swim faster and helps to swim on side
Functional features of the flounder
tolerance for low salinity
has diluted urine in fresh water
concntrated urine in salt water
behavioural features of flounder
Change color of skin to match surroundings to hide from predators
bury themselves in the sand to hide from predators or to catch pray
change shape to help find food
go from river to sea
This entry was posted in
Adaptations, Functioning Organisms, Student Posts and tagged Adaptations, arid, behavioural, bird, fish, functional, mammal, marsupial, structual, water_loss on . July 12, 2010