Pancreas
Kidneys
Liver
Bone marrow
Porifera
Chordate
Mollusca
Coelenterate
Pipe fish
Dog fish
Saw fish
Silver fish
2 pairs of legs
3 pairs of legs
4 pairs of legs
5 pairs of legs
Reptiles
Insects
Birds
Fishes
Ammonia
Urea
Uric acid
All of these
Fish
Nematode
Tree snake
Lizard
Binary fission
Meiotic division
Direct division
Indirect division
Horny matter
Feathers
Hairs
Scales
B
C
E
K