OSMOREGULATION Flashcards
1
Q
Osmoregulation
A
the maintenance of salt and water balance in an organism
2
Q
osmosis
A
diffusion but water is the thing crossing the membrane. not the solutes
3
Q
isoosmotic
A
same osmolarity as surroundings
4
Q
hyperosmotic
A
greater amount of solutes than surrounding
5
Q
hypoosmotic
A
lesser amount of solutes than surroundings
6
Q
osmoconformers
A
isoosmotic with surroundings
7
Q
osmoregulators
A
must control its internal osmolarity
if lives in hyper osmotic environment must take in water
if it lives in a hypoosmotic environment must excrete water
8
Q
stenohaline
A
can tolerate only narrow changes in external osmolarity
9
Q
euryhaline
A
organisms can tolerate large fluctuations in external osmolarity
10
Q
anhydrobiosis
A
ability to survive when water source dries up
