The excretory material of bony fish is:
urea
protein
ammonia
amino acid
A.
urea
The excretory and osmoregulatory organs of the fishes are the gills and kidney. Excretion in bony fishes is ureotelic (i.e., they excrete urea) but some freshwater bony fishes are ammonotelic (i.e., excrete ammonia).
Different colours of frog skin are controlled by:
hormones
melanocytes
nervous system
both 'a' and 'c'
The group of anamniota includes:
reptiles and birds
birds and mammals
fishes and amphibians
reptiles, and mammals
The enzyme, which combines with non-protein part to form a functional enzyme known as :
co-enzyme
holoenzyme
apoenzyme
prosthetic group
Haemocoel is found in :
Hydra and Aurelia
Taenia and Ascaris
cockroach and Pila
Balanoglossus and Herdmania
