Oscular fringe in Scypha is formed by:
A.Monaxon spicules
B.Myocytes
C.Collencytes
D.None of these
Category: Phylum Porifera Mcqs
Locomotion does not occur in:
A.Earthworm
B.Leucosolenia
C.Maggot of house fly
D.Amoeba
Who used the term porfera for sponges:
A.Ellis
B.Grant
C.Huxley
D.Sollas
Olynthus is larval stage of:
A.Scypha
B.Leucosolenia
C.Spongilla
D.None of these
In which of the canal system the following course of water current is found water enters ? ostia ? spongocoel ? osculum ? out
A.Asconoid
B.Syconoid
C.Leunoid
D.Rhagon
In Scypha the prosophyles are formed by:
A.Porocytes
B.Desmocytes
C.Myocytes
D.Thesocytes
If carmine particles are placed in close association of living sponge, the these will:
A.Be sucked into spongocoel
B.Remain where they are
C.Be carried away from osculum
D.Rotate in a circle around osculum
Which of the cells of Leucosolenia work like muscle cells of vertebrates:
A.Myocytes
B.Collencytes
C.Thesocytes
D.None of these
Ornamental sponges belong to the group of:
A.Calcareous sponges
B.Glass sponges
C.Demospongiae
D.None of these
Porocytes are specialized cells for the passage of:
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
