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BIOL 313 Zooplankton II Questions and
Correct Answers/ Latest Update / Already
Graded
What phylum does the Ostracod Class belong to?
Ans: Arthropoda
What phylum does the Copepod Class belong to?
Ans: Arthropoda
What phylum does Ciliophora belong to?
Ans: Its own phylum (Protozoan kingdom).
What phylum does Rotifera belong to?
Ans: Its own phylum.
What phylum does the Gastropod Class belong to?
Ans: Mollusca (holoplanktonic forms only).
The Errantia Class belongs to which phylum?
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Ans: Annelida.
Chaetognatha belongs to which phylum?
Ans: Its own phylum (arrow worms).
Appendicularia belongs to which class and phylum?
Ans: Appendixularia Class, Chordata Phylum.
Thaliacea belongs to which class and phylum?
Ans: Thaliacea Class, Chordata Phylum.
How do ostracods reproduce?
Ans: Mostly sexually with internal fertilization + brooding;
some species do parthenogenesis.
What do ostracods eat?
Ans: Detritus (recycle nutrients mid-water).
Why are ostracod shells important for science?
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Ans: They preserve well in sediments → used to reconstruct
past climate conditions.
How many ostracod species exist?
Ans: ~13,000 (mostly marine).
What is the typical size of ostracods?
Ans: ~0.5 mm.
Why might ostracods look like mollusks at first glance?
Ans: They are enclosed in two shells.
Like most arthropods, they have...
Ans: a) well developed antennae used for locomotio n, feeding
and sensing
b)
have a shell made of chiton
c) other appendages (eg caudal furca, vary by spp), used in
locomotion,
feeding and mating
All rights reserved © 2025/ 2026 |
BIOL 313 Zooplankton II Questions and
Correct Answers/ Latest Update / Already
Graded
What phylum does the Ostracod Class belong to?
Ans: Arthropoda
What phylum does the Copepod Class belong to?
Ans: Arthropoda
What phylum does Ciliophora belong to?
Ans: Its own phylum (Protozoan kingdom).
What phylum does Rotifera belong to?
Ans: Its own phylum.
What phylum does the Gastropod Class belong to?
Ans: Mollusca (holoplanktonic forms only).
The Errantia Class belongs to which phylum?
All rights reserved © 2025/ 2026 |
, Page |2
Ans: Annelida.
Chaetognatha belongs to which phylum?
Ans: Its own phylum (arrow worms).
Appendicularia belongs to which class and phylum?
Ans: Appendixularia Class, Chordata Phylum.
Thaliacea belongs to which class and phylum?
Ans: Thaliacea Class, Chordata Phylum.
How do ostracods reproduce?
Ans: Mostly sexually with internal fertilization + brooding;
some species do parthenogenesis.
What do ostracods eat?
Ans: Detritus (recycle nutrients mid-water).
Why are ostracod shells important for science?
All rights reserved © 2025/ 2026 |
, Page |3
Ans: They preserve well in sediments → used to reconstruct
past climate conditions.
How many ostracod species exist?
Ans: ~13,000 (mostly marine).
What is the typical size of ostracods?
Ans: ~0.5 mm.
Why might ostracods look like mollusks at first glance?
Ans: They are enclosed in two shells.
Like most arthropods, they have...
Ans: a) well developed antennae used for locomotio n, feeding
and sensing
b)
have a shell made of chiton
c) other appendages (eg caudal furca, vary by spp), used in
locomotion,
feeding and mating
All rights reserved © 2025/ 2026 |
