Which of the cells of Leucosolenia work like muscle cells of vertebrates:
A.Myocytes
B.Collencytes
C.Thesocytes
D.None of these
A.Myocytes
B.Collencytes
C.Thesocytes
D.None of these
A.Calcareous sponges
B.Glass sponges
C.Demospongiae
D.None of these
A.Incoming water current and are located in the body wall of sponges
B.Excretory products and are located inside the body of flat-worms
C.Outgoing water current and are located on the top of sponge
D.None of these
A.Planula
B.Scyphistoma
C.Amphiblastule
D.Olynthus
A.Choanocytes
B.Pinacocytes
C.Porocytes
D.Thesocytes
A.A larval stage
B.A type of cell
C.A skeletal element
D.A type of canal system found in the adult stage of few sponges
A.Calcareous spicules only
B.Silicious spicules
C.Spongin fibres
D.All of these
A.Amoebocytes
B.Collencyte
C.Myocyte
D.Gemmule arechaeocyte
A.Several mouths and only one exit chitinous spicules
B.Chitinous spicules
C.One mouth and several exits in the body
D.A large stomach