Canal system is characteristic of:
A.Sponges
B.Coelentrates
C.Both (a) & (b)
D.None of these
Category: Phylum Porifera Mcqs
The study of morphology and physiology of sponges was done by:
A.Grant
B.Ellis
C.Sollas
D.None of these
In Scypha the choanocytes are found in the:
A.Incurrent canals
B.Radial canals
C.Spongocoel
D.None of these
Colour of spongilla colony looks green due to presence of a symbiont in its amoebocytes and archaeocytes called:
A.Zoochlorellae
B.Spongicola
C.Charilla
D.None of these
A funnel-like collar and a long whip-like flagellum are found in which of these cells of sponges:
A.Pinacocytes
B.Choanocytes
C.Amoebocytes
D.Archaeocytes
Incurrent canals in syconoid sponge are:
A.Open to outside but closed towards spongocoel
B.Open to spongocel but closed to outside
C.Closed to outside but opening into osculum
D.None of these types
Pinacocytes are found in the body of
A.Sponges
B.Snails
C.Rabbits
D.Hydras
Tissues are not found in:
A.Corals
B.Sponges
C.Jelly-fishes
D.Star-fishes
Gemmules are formed for:
A.Asexual reproduction
B.Sexual reproduction
C.Body growth
D.Digestion
Sponges are characterized by the presence of:
A.Canal system
B.Choanocytes
C.One exit and many mouthlets
D.All of these characters
