BIO 211 EXAM 2 IOWA STATE LORI
BIEDERMAN EXAM QUESTIONS &
VERIFIED CORRECT ANSWERS
animal characteristics - correct answer ✔✔heterotrophic, multicellular, diploid (only gametes
haploid), 1.5 BYO, ingest food, regulate cell growth, innate immunity, move, process tissues
except sponges.
Animals are monophyletic to - correct answer ✔✔choanoflagellates
in cleavage does the ball of cells change size? - correct answer ✔✔no
steps of embryonic development - correct answer ✔✔fertilization, first cleavage, blastula,
gastrula
diploblastic organisms - correct answer ✔✔have two germ layers: ecto+endo (cnidarians, radial
symmetric, neural net, no coelom)
triploblastic organisms have - correct answer ✔✔3 germ layers: ecto+meso+endo (all other
animals, bilaterally symmetric, CNS, various coeloms)
what do coeloms do - correct answer ✔✔cushion organs and provide stability.
Protostomes - correct answer ✔✔first hole is the mouth
deuterostomes - correct answer ✔✔first hole is anus
, segmentation has evolved multiple times - correct answer ✔✔homoplasy
it is good because it allows for specialization
cute animals are 0.5% of named diversity - correct answer ✔✔
sponge characteristics - correct answer ✔✔no germ layers, asymmetric, no tissues, 8k sp,
mostly marine, adults sessile larvae mobile, external fertilization, basal animal tree
jellyfish apocalypse - correct answer ✔✔not taken seriously
coral is an important - correct answer ✔✔cnidarian
reefs are - correct answer ✔✔centers for diversity, symbiotic with a protist- dinoflagellate
protostomes - correct answer ✔✔triploblastic, spiral/determinate cleavage, trochophore,
coelomate (lost in evolution), 20k sp, bilateral, cephalization
three classes of Platyhelminthes: - correct answer ✔✔Turbellaria (free living)
trematodes (parasitic)
cestodes (parasitic)
parasites - correct answer ✔✔use but don't kill host, may have intermediate host, only
reproduce in final host, high reproduction rate, little investment in digestion, camo,
annelid characteristics - correct answer ✔✔true coelom, segmentation, help soil by aeration,
redistribute organic matter,
BIEDERMAN EXAM QUESTIONS &
VERIFIED CORRECT ANSWERS
animal characteristics - correct answer ✔✔heterotrophic, multicellular, diploid (only gametes
haploid), 1.5 BYO, ingest food, regulate cell growth, innate immunity, move, process tissues
except sponges.
Animals are monophyletic to - correct answer ✔✔choanoflagellates
in cleavage does the ball of cells change size? - correct answer ✔✔no
steps of embryonic development - correct answer ✔✔fertilization, first cleavage, blastula,
gastrula
diploblastic organisms - correct answer ✔✔have two germ layers: ecto+endo (cnidarians, radial
symmetric, neural net, no coelom)
triploblastic organisms have - correct answer ✔✔3 germ layers: ecto+meso+endo (all other
animals, bilaterally symmetric, CNS, various coeloms)
what do coeloms do - correct answer ✔✔cushion organs and provide stability.
Protostomes - correct answer ✔✔first hole is the mouth
deuterostomes - correct answer ✔✔first hole is anus
, segmentation has evolved multiple times - correct answer ✔✔homoplasy
it is good because it allows for specialization
cute animals are 0.5% of named diversity - correct answer ✔✔
sponge characteristics - correct answer ✔✔no germ layers, asymmetric, no tissues, 8k sp,
mostly marine, adults sessile larvae mobile, external fertilization, basal animal tree
jellyfish apocalypse - correct answer ✔✔not taken seriously
coral is an important - correct answer ✔✔cnidarian
reefs are - correct answer ✔✔centers for diversity, symbiotic with a protist- dinoflagellate
protostomes - correct answer ✔✔triploblastic, spiral/determinate cleavage, trochophore,
coelomate (lost in evolution), 20k sp, bilateral, cephalization
three classes of Platyhelminthes: - correct answer ✔✔Turbellaria (free living)
trematodes (parasitic)
cestodes (parasitic)
parasites - correct answer ✔✔use but don't kill host, may have intermediate host, only
reproduce in final host, high reproduction rate, little investment in digestion, camo,
annelid characteristics - correct answer ✔✔true coelom, segmentation, help soil by aeration,
redistribute organic matter,
