Fresh water animals have special cells which help in actively transporting salts from outside environment; such cells are called……
a) leucocytes
b) adipocytes
c) ionocytes
d) osteoclasts
Explanation: An ionocyte is a mitochondrion-rich cell within ionoregulatory organs of animals, such as teleost fish gill
In amphibians, ionocytes which help in transporting salt into the body from outside environment; are found in…….
a) skin
b) tongue
c) gills
d) kidneys
In fish, ionocytes which help in transporting salt into the body from outside environment; are found in…….
a) skin
b) tongue
c) gills
d) kidneys
In marine environment, which types of animals live on the basis of osmoregulation?
a) osmoconformers
b) osmoregulators
c) both a and b
d) none of them
Which of the following marine animals are isotonic to their external environment?
a) sharks and rays
b) skates
c) myxine (hag fish)
d) all of these
Explanation: isotonic means having same solute concentration as outside
Which of the following marine animals are hypotonic to their external environment?
a) common carp
b) cartilaginous fish
c) trout fish
d) teleosts
