Excretion in flat-worms is performed by:
A.Flame cells
B.Nephridia
C.Malpighian tubules
D.All of these
A.Flame cells
B.Nephridia
C.Malpighian tubules
D.All of these
A.Liver-fluke
B.Tape-worm
C.Earthworm
D.None of these
A.Histology
B.Entomology
C.Ornithology
D.None of these
A.Presence of coelom
B.Flattened body
C.Alimentary canal
D.None of these
A.One pair and placed side by side
B.One pair and tandemn
C.Two pairs and highly branched
D.Two pairs, highly branched and tandemn
A.Digestive system
B.Respiratory system
C.Circulatory system
D.Respiratory and circulatory system
A.Digestive system
B.Respiratory system
C.Circulatory system
D.Reproductive system
A.Man
B.Pig
C.Buffalo
D.Crab
A.Liver-fluke and tape-worms
B.Annelids
C.Molluscs and echinoderms
D.None of these
A.Absence of anus
B.Presence of pharynx
C.Absence of pharynx
D.Presence of anus and absence of