Blastula of frog has :
blastopore
blastocoel
arahenteron
gastropore
B.
blastocoel
During early embryonic development of frog a blastula stage comes after morula stage which contain a small irregular excentric space or cavity called blastocoel or segmentation cavity appear in the animal hemisphere.
Earthworms are economically important for man as these are used as
bait for catching fish
food of poultry
medicine for gout
All of the above
Which of the following is a transparent tissue ?
Tendon
Fibrous cartilage
Hyaline cartilage
All of the above
Which one is uricotelic ?
Frog and toads
Lizards and birds/cockroach
Cattle, monkey and man
Molluscs and teleost fishes
Haemocoel is found in :
Hydra and Aurelia
Taenia and Ascaris
cockroach and Pila
Balanoglossus and Herdmania
Different colours of frog skin are controlled by:
hormones
melanocytes
nervous system
both 'a' and 'c'