BIO 207 - Midterm 3 ACTUAL UPDATED
Exam Questions and CORRECT Answers
The multicellular choanoflagellate genus ____ has its collar cells on the ____ of the body,
allowing it to ____. Because Porifera has its collar cells on the ___ of the body, it is sessile. -
CORRECT ANSWER - proterospongia, outside, to swim
inside
Both Choanoflagellida and Porifera use cells named ___ to transport food particles. - CORRECT
ANSWER - amoebocytes
What evolutionary advantage is there for a sponge growing on rock to recognize portions of its
own colony as self? - CORRECT ANSWER - immediately grows larger, lower mortality,
higher reproduction
choanoflagellida - CORRECT ANSWER - -closest relative to animals
-colonial
-similar to sponges
-collar cells on outside
porifera - CORRECT ANSWER - sponges
ctenophora - CORRECT ANSWER - comb jellies
acoela - CORRECT ANSWER - flatwosm
annelida - CORRECT ANSWER - worms
, arthropoda - CORRECT ANSWER - the phylum to which jointed-legged invertebrates
belong, including insects, arachnids and crustaceans
Turbellaria - CORRECT ANSWER - free-living flatworms
cestoda - CORRECT ANSWER - tapeworms
trematoda - CORRECT ANSWER - parasitic flukes
name the 4 cnidarian top 20 animals in the correct phylogenetic order - CORRECT
ANSWER - 1. anthopleura (sea anemone)
2. carybdea (sea wasp)
3. physalis (portuguêse man of war)
4. turritopsis (hydrozoans)
anthopleura - CORRECT ANSWER - sea anemones
carybdea - CORRECT ANSWER - sea wasp
physalia - CORRECT ANSWER - Phylum Cnidaria
Class Hydrozoa
Portuguese man or war
turritopsis - CORRECT ANSWER - immortal jellyfish
porifera skeleton îs made of what - CORRECT ANSWER - collagen and spicules
Exam Questions and CORRECT Answers
The multicellular choanoflagellate genus ____ has its collar cells on the ____ of the body,
allowing it to ____. Because Porifera has its collar cells on the ___ of the body, it is sessile. -
CORRECT ANSWER - proterospongia, outside, to swim
inside
Both Choanoflagellida and Porifera use cells named ___ to transport food particles. - CORRECT
ANSWER - amoebocytes
What evolutionary advantage is there for a sponge growing on rock to recognize portions of its
own colony as self? - CORRECT ANSWER - immediately grows larger, lower mortality,
higher reproduction
choanoflagellida - CORRECT ANSWER - -closest relative to animals
-colonial
-similar to sponges
-collar cells on outside
porifera - CORRECT ANSWER - sponges
ctenophora - CORRECT ANSWER - comb jellies
acoela - CORRECT ANSWER - flatwosm
annelida - CORRECT ANSWER - worms
, arthropoda - CORRECT ANSWER - the phylum to which jointed-legged invertebrates
belong, including insects, arachnids and crustaceans
Turbellaria - CORRECT ANSWER - free-living flatworms
cestoda - CORRECT ANSWER - tapeworms
trematoda - CORRECT ANSWER - parasitic flukes
name the 4 cnidarian top 20 animals in the correct phylogenetic order - CORRECT
ANSWER - 1. anthopleura (sea anemone)
2. carybdea (sea wasp)
3. physalis (portuguêse man of war)
4. turritopsis (hydrozoans)
anthopleura - CORRECT ANSWER - sea anemones
carybdea - CORRECT ANSWER - sea wasp
physalia - CORRECT ANSWER - Phylum Cnidaria
Class Hydrozoa
Portuguese man or war
turritopsis - CORRECT ANSWER - immortal jellyfish
porifera skeleton îs made of what - CORRECT ANSWER - collagen and spicules
