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BIOL 1202 Test 4 - Hrincevich
Questions with Detailed Verified
Answers
invertebrates Ans: Animals without backbones
95% of known animal species
porifera Ans: the phylum of sponges
sedentary
suspension feeders/filter feeders Ans: how do sponges feed?
spongocoel Ans: The central cavity of a sponge.
osculum Ans: A large opening on a sponge through which filtered water is
expelled
choanocytes Ans: flagellated collar cells, generate a water current through the
sponge and ingest suspended food through phagocytosis
mesohyl Ans: a gelatinous region between the two layers of cells of a sponge
amoebocytes Ans: totipotent cells found in the mesohyl that play roles in
digestion and create skeletal fibers
hermaphrodites Ans: what is the sexual orientation of most sponges?
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sequential hermaphroditism Ans: A reproductive pattern in which an
individual reverses its sex during its lifetime.
Eumetazoa Ans: animals with true tissues
cnidaria Ans: one of the oldest phyla in the clade Eumetazoa
include: jellies, corals, hydras
diploblast
radial Ans: body plan of cnidarians
gastrovascular cavity Ans: A central cavity with a single opening in the body
that functions in both the digestion and distribution of nutrients.
polyp
medusa Ans: two variations of the body plan in cnidarians (sessile form and
motile form)
carnivores Ans: cnidarians are what type of feeders? (omni, carni, herbi)
cnidocytes Ans: unique cells of cnidocytes that function in defense and
capture of prey
Nematocysts Ans: specialized organelles (cnidae) within cnidocytes that eject
a stinging thread
medusozoa
anthozoa Ans: two major clades of cnidarians
BIOL 1202 Test 4 - Hrincevich
Questions with Detailed Verified
Answers
invertebrates Ans: Animals without backbones
95% of known animal species
porifera Ans: the phylum of sponges
sedentary
suspension feeders/filter feeders Ans: how do sponges feed?
spongocoel Ans: The central cavity of a sponge.
osculum Ans: A large opening on a sponge through which filtered water is
expelled
choanocytes Ans: flagellated collar cells, generate a water current through the
sponge and ingest suspended food through phagocytosis
mesohyl Ans: a gelatinous region between the two layers of cells of a sponge
amoebocytes Ans: totipotent cells found in the mesohyl that play roles in
digestion and create skeletal fibers
hermaphrodites Ans: what is the sexual orientation of most sponges?
, 2|Page
sequential hermaphroditism Ans: A reproductive pattern in which an
individual reverses its sex during its lifetime.
Eumetazoa Ans: animals with true tissues
cnidaria Ans: one of the oldest phyla in the clade Eumetazoa
include: jellies, corals, hydras
diploblast
radial Ans: body plan of cnidarians
gastrovascular cavity Ans: A central cavity with a single opening in the body
that functions in both the digestion and distribution of nutrients.
polyp
medusa Ans: two variations of the body plan in cnidarians (sessile form and
motile form)
carnivores Ans: cnidarians are what type of feeders? (omni, carni, herbi)
cnidocytes Ans: unique cells of cnidocytes that function in defense and
capture of prey
Nematocysts Ans: specialized organelles (cnidae) within cnidocytes that eject
a stinging thread
medusozoa
anthozoa Ans: two major clades of cnidarians
