BIOL 1104 Exam 2 Notes Questions
With Verified Answers
\.Animal Characteristics - Answer- Multicellular, Symmetry, Body Cavity, Germ Layers
\.Germ Layers - Answer- ectoderm, mesoderm, endoderm
\.Cephalization - Answer- concern of sensory and processing structures in the head
\.Asymmetry - Answer- Can't be split
\.Bilateral Symmetry - Answer- Can be split into 2 mirror images of each other
\.Radial Symmetry - Answer- Body organized around a central axis
\.Phylum Porifera - Answer- Sponges, Simplest Multicellular Organism, Two Germ Layers,
Asymmetry, No Cephalization
\.Phylum Cnidaria - Answer- Jellyfish, coral and sea anemones, Two Germ Layers, Radial
Symmetry, Nervous/Digestive Tissues, Specialization of Cells, Cnidocytes, Polp/Medusa
\.Blastopore - Answer- the opening of the central cavity of an embryo in the early stage of
development. In Protostomes its 1st and in Deuterostomes its 2nd
, \.Phylum Platyhelminthes - Answer- No body cavity, incomplete digestion, No circulatory
system and nervous system in body. Ex: Flatworm
\.Phylum Nematoda - Answer- False body cavity, Complete Digestion, Open circulatory
system
\.Phylum Annelida - Answer- True body cavity, Complete digestion, closed circulatory system,
nervous system in head
\.Phylum Mollusca, Class Gastropoda - Answer- Snails, Muscular foot to move, General
feeders (scavengers), Open Circulatory System, Cephalization
\.Phylum Mollusca, Class Bivalvia - Answer- Oyster, shellfish, clam, mussel, Pelecypoda, No
Cephalization, Open Circulatroy System, Complete Digestive, Filter Feeder, Gas Exchange (gills)
\.Phylum Mollusca, Class Cephalopoda - Answer- Squid, Octopus, Advanced nervous
system,Closed Circulatory System
\.Phylum Arthropoda - Answer- Insects, Crystaceans, Arachnids, Chitin Exoskeleton, Open
circulatory system, segmented bodies
\.Phylum Echniodermata - Answer- Endoskeleton, Sea urchins, Secodial radial symmetry
\.Phylum Chordata - Answer- Notochord, Dorsal Nerve Cord, Pharyngeal Gill, Post Anal tail
\.Chonorichthyes - Answer- Cartilaginous Fish, Advanced nervous system, unchanged for 65
mil, Sharks
With Verified Answers
\.Animal Characteristics - Answer- Multicellular, Symmetry, Body Cavity, Germ Layers
\.Germ Layers - Answer- ectoderm, mesoderm, endoderm
\.Cephalization - Answer- concern of sensory and processing structures in the head
\.Asymmetry - Answer- Can't be split
\.Bilateral Symmetry - Answer- Can be split into 2 mirror images of each other
\.Radial Symmetry - Answer- Body organized around a central axis
\.Phylum Porifera - Answer- Sponges, Simplest Multicellular Organism, Two Germ Layers,
Asymmetry, No Cephalization
\.Phylum Cnidaria - Answer- Jellyfish, coral and sea anemones, Two Germ Layers, Radial
Symmetry, Nervous/Digestive Tissues, Specialization of Cells, Cnidocytes, Polp/Medusa
\.Blastopore - Answer- the opening of the central cavity of an embryo in the early stage of
development. In Protostomes its 1st and in Deuterostomes its 2nd
, \.Phylum Platyhelminthes - Answer- No body cavity, incomplete digestion, No circulatory
system and nervous system in body. Ex: Flatworm
\.Phylum Nematoda - Answer- False body cavity, Complete Digestion, Open circulatory
system
\.Phylum Annelida - Answer- True body cavity, Complete digestion, closed circulatory system,
nervous system in head
\.Phylum Mollusca, Class Gastropoda - Answer- Snails, Muscular foot to move, General
feeders (scavengers), Open Circulatory System, Cephalization
\.Phylum Mollusca, Class Bivalvia - Answer- Oyster, shellfish, clam, mussel, Pelecypoda, No
Cephalization, Open Circulatroy System, Complete Digestive, Filter Feeder, Gas Exchange (gills)
\.Phylum Mollusca, Class Cephalopoda - Answer- Squid, Octopus, Advanced nervous
system,Closed Circulatory System
\.Phylum Arthropoda - Answer- Insects, Crystaceans, Arachnids, Chitin Exoskeleton, Open
circulatory system, segmented bodies
\.Phylum Echniodermata - Answer- Endoskeleton, Sea urchins, Secodial radial symmetry
\.Phylum Chordata - Answer- Notochord, Dorsal Nerve Cord, Pharyngeal Gill, Post Anal tail
\.Chonorichthyes - Answer- Cartilaginous Fish, Advanced nervous system, unchanged for 65
mil, Sharks
