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WorksheetsPhyla Porifera and Cnidaria
Total questions: 15
Worksheet time: 8mins
What flagellated cells help move water throughout sponges?
spicules
planula
archaeocytes
choanocytes
Where water is expelled from sponges.
ostia
oscula
pinacocytes
amoebocytes
Most sponges belong to the following class:
Porifera
Cnidaria
Calcarea
Demospongiae
Animals in Porifera are sessile animals, meaning
they don't move
they don't eat
they don't reproduce
they are poisonous
The skeletons in phylum Porifera are made out of
collagen, muscle, and protein.
carbohydrates, mesohyl,and sucrose.
they have no skeleton.
mesohyl, collagen, and spicules.
What is the function of the sponges' spicules?
structure
flexibility
eating
reproduction
Most sponges are monoecious. What does this mean?
They only produce oocytes (egg cells).
They only produce spermatocytes (sperm cells).
They produce both oocytes and spermatocytes.
They don't reproduce.
What type of symmetry do sponges typically have?
Asymmetry
Bilateral symmetry
Radial symmetry
Spherical symmetry
To which class does the Portuguese man-o-war belong?
Scyphozoa
Anthozoa
Cnidaria
Hydrozoa
Which Cnidarian lives in freshwater?
coral
hydra
box jelly
Aurelia
What is the primary region of digestion and circulation in Cnidarians?
gastrovascular cavity
mesoglea
tentacles
cnidocytes
What are the stinging cells in cnidarians?
spicules
mesoglea
cnidocytes
choanocytes
How do Hydra reproduce?
binary fission
sexual reproduction
regeneration
budding
Anthozoans stay in the _________ stage.
medusa
sexual
polyp
Porifera
After fertilization occurs in Cnidarians, a ___________ forms.
medusa
planula
polyp
pinacocyte
