Porocytes are specialized cells found exclusively in:
A.Cnidarians
B.Sponges
C.Molluscs
D.Echinoderms
Category: Phylum Porifera Mcqs
Excretory waste in sponges is:
A.Ammonia
B.Urea
C.Uric acid
D.None of these
Reserve food in sponges are:
A.Fats only
B.Glycogen
C.Glycoproteins
D.All of these
Who places sponges alongwith plants in group ‘Zoophyta’:
A.Linnaeus
B.Ellis
C.Aristotle
D.Lamarck
Cells ingesting food in Leucosolenia and other sponges are:
A.Pinacocytes
B.Choanocytes
C.Porocytes
D.Trophocytes
Sponges need a constant current of water in order to perform:
A.Respiration
B.Respiration and excretion
C.Respiration, excretion and nutrition
D.Respiration, excretion, nutrition and reproduction
Canal system is found in which of these:
A.Star-fishes
B.Sponges
C.Corals
D.All of these
Sleleton forming cells are called:
A.Scleroblasts
B.Cnidoblasts
C.Collencytes
D.Desmacytes
Large food particles are directly ingested by:
A.Pinacocytes
B.Choanocytes
C.Both (a) & (b)
D.None of these
Respiration in sponges:
A.Occurs when the water current comes in an goes out
B.Occurs anaerobically
C.Occurs with the help of gills like many aquatic animals
D.Does not occur at all
