Which of the following animal groups represents 95% animals?
a) chordates
b) vertebrates
c) invertebrates
d) primates
Water goes out of the sponges through…
a) ostia
b) osculum
c) spongeocoel
d) whole body
Digestion takes place in sponges in the food vacuoles of …….
a) pinacocytes
b) amoebocytes
c) choanocytes
d) mesenchyme
In which of the following respiratory system/organs is/are absent?
a) phylum porifera
b) phylum cnidaria
c) phylum platyheminthes
d) all of these
Which of the following phylum animals are called stinging celled organisms?
a) phylum porifera
b) phylum cnidaria
c) phylum Platyhelminthes
d) phylum aschelminthes
Transportation and excretion in cnidarians take place through…….
a) organs
b) diffusion
c) active transport
d) fluid inside the vessels
