Biology 11 Chapter - 9
Diversity Among Animals - 12
1.
The protists from which the sponges have been evolved are known as?
a) choanoflagellates
b) zooflagellates
c) ciliates
d) euglenoids
2.
Which one of the following is Not a sponge?
a) leucosolenia
b) sycon
c) jellyfish
d) spongilla
3.
Digestion in sponges takes place in the food vacule present in?
a) pinacocytes
b) mesenchyme
c) choanocytes
d) a and b are correct
4.
Digestion in sponges is?
a) intracellular
b) intercellular
c) absent
d) extracellular
5.
Intracellular digestion means that it takes place?
a) all the time
b) outside the cell
c) between two cells
d) within the cell
6.
Respiration in porifera is aerobic. It means that?
a) it needs carbon dioxide
b) it needs no oxygen
c) it needs the presence of oxygen
d) it needs nitrogen
7.
Excretion in sponges takes place through?
a) flame cells
b) nephridia
c) diffusion
d) malphigian tubes
8.
Collar cells are present only in?
a) sponges
b) cnidarians
c) flatworms
d) insects
9.
Which one of the following represent a dead end of evolution?
a) sponges
b) cnidarians
c) echinoderms
d) roundworms
10.
Which one of the following is used to absorb blood and fluid in surgical operations?
a) sponges
b) nematodes
c) arthropodes
d) annelids
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