Phylum Porifera

Phylum Porifera
Collar cells of sponges are known as:
choanocytes
chondrocytes
pinacocytes
porocytes
Author: rikazzz Comment
Phylum Porifera
A thin flat cell that covers outer surface of sponges are called:
porocytes
chondrocytes
pinacocytes
leukocytes
Author: rikazzz Comment
Phylum Porifera
Skeleton of sponges are made up of a fibrous protein called:
spongin
fibrin
fibrinogen
fibrous protein
Author: rikazzz Comment
Phylum Porifera
In sponges, exchange of water and diffusion is carried out by process of:
osmosis
active transport
diffusion
passive transport
Author: rikazzz Comment
Phylum Porifera
Needle-like spikes present on skeleton of sponges are called:
needles
stinging cells
defensive cells
spicules
Author: rikazzz Comment

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