UCF Marine biology
Invertebrates with 100%
correct answers ( graded A+)
Kingdom - answer Animalia
Kingdom Animalia: - answer Multicellular, heterotrophic; lack cell
walls, directed behaviors, muscular contraction, sensory systems,
complex nervous systems, mostly sexual reproduction (genetic
variability)
2 major categories of animals: - answer Vertebrates
Invertebrates
Vertebrates - answer Have a backbone
Invertebrates - answer Do NOT have a backbone
Estimated 97% of animal species are - answer invertebrates
(most terrestrial insects)
Sponges - answer Simplest animals, lack true tissues or organs
(individual cells carry different functions; Sessile: Attached life
forms
,Sessile: - answer Attached life forms
Simple sponge body plan: - answer Porocytes
Choanocytes (collar cells)
Osculum
Porocytes - answer tube-like pore cells, allows water to enter
sponge's body
Choanocytes (collar cells) - answer Line inner feeding chamber
Have flagellum to create current and collar that traps food
particles
Osculum - answer Large opening on top of sponge where water
leaves
Sponges are what kind of feeders? - answer suspension feeders
(filter food particles from water)
Larger sponges: - answer Need more support/structure
Have several oscula for higher water flow
also have:
- Spicule
,- Amoebocytes
- Spongin
Spicule - answer Siliceous or calcareous structures for support
Spongin - answer Protein for tough fibers
Amoebocytes - answer Wandering cells that secrete the spiracles
and spongin; Also transport and store food, can change into other
cell types
Cnidarians - answer Multicellular with specialized tissues for
certain functions, allows complex behavior
Cnidarians includes what animals? - answer sea anemones,
jellyfish, corals
Cnidarians have what kind of symmetry? - answer Radial
symmetry: Similar body parts arranged around a central axis
Oral (mouth) and aboral (opposite from mouth) surface
Cnidarians have what body plan? - answer Oral (mouth) and
aboral (opposite from mouth) surface
Centrally located mouth surrounded by tentacles which contain
cnidocytes, (cells that contain stinging structures called
nematocysts)
, Cnidarian tentacles - answer Tentacles armed with stinging cells
(cnidocytes) containing nematocysts are located in a ring around
the single opening into the gastrovascular cavity. Nematocysts
are unique to the Phylum Cnidaria.
Cnidarian mouth - answer opens to a blind gut where digestion
takes place
Cnidarians have 2 layers of cells form body walls: - answer
Epidermis
Gastrodermis
Gastrodermis - answer lines the gut (in cnidarians)
has Mesoglea: Middle area that does not contain cells
Epidermis - answer External layer (in cnidarians)
2 basic body forms of cnidarians - answer polyp and medusa
Polyp (Cnidaria) - answer Sac-like with mouth, tentacles facing
upward
Medusa - answer Bell-like with mouth, tentacles facing downward
Cnidarian Types: - answer Hydrozoans
Invertebrates with 100%
correct answers ( graded A+)
Kingdom - answer Animalia
Kingdom Animalia: - answer Multicellular, heterotrophic; lack cell
walls, directed behaviors, muscular contraction, sensory systems,
complex nervous systems, mostly sexual reproduction (genetic
variability)
2 major categories of animals: - answer Vertebrates
Invertebrates
Vertebrates - answer Have a backbone
Invertebrates - answer Do NOT have a backbone
Estimated 97% of animal species are - answer invertebrates
(most terrestrial insects)
Sponges - answer Simplest animals, lack true tissues or organs
(individual cells carry different functions; Sessile: Attached life
forms
,Sessile: - answer Attached life forms
Simple sponge body plan: - answer Porocytes
Choanocytes (collar cells)
Osculum
Porocytes - answer tube-like pore cells, allows water to enter
sponge's body
Choanocytes (collar cells) - answer Line inner feeding chamber
Have flagellum to create current and collar that traps food
particles
Osculum - answer Large opening on top of sponge where water
leaves
Sponges are what kind of feeders? - answer suspension feeders
(filter food particles from water)
Larger sponges: - answer Need more support/structure
Have several oscula for higher water flow
also have:
- Spicule
,- Amoebocytes
- Spongin
Spicule - answer Siliceous or calcareous structures for support
Spongin - answer Protein for tough fibers
Amoebocytes - answer Wandering cells that secrete the spiracles
and spongin; Also transport and store food, can change into other
cell types
Cnidarians - answer Multicellular with specialized tissues for
certain functions, allows complex behavior
Cnidarians includes what animals? - answer sea anemones,
jellyfish, corals
Cnidarians have what kind of symmetry? - answer Radial
symmetry: Similar body parts arranged around a central axis
Oral (mouth) and aboral (opposite from mouth) surface
Cnidarians have what body plan? - answer Oral (mouth) and
aboral (opposite from mouth) surface
Centrally located mouth surrounded by tentacles which contain
cnidocytes, (cells that contain stinging structures called
nematocysts)
, Cnidarian tentacles - answer Tentacles armed with stinging cells
(cnidocytes) containing nematocysts are located in a ring around
the single opening into the gastrovascular cavity. Nematocysts
are unique to the Phylum Cnidaria.
Cnidarian mouth - answer opens to a blind gut where digestion
takes place
Cnidarians have 2 layers of cells form body walls: - answer
Epidermis
Gastrodermis
Gastrodermis - answer lines the gut (in cnidarians)
has Mesoglea: Middle area that does not contain cells
Epidermis - answer External layer (in cnidarians)
2 basic body forms of cnidarians - answer polyp and medusa
Polyp (Cnidaria) - answer Sac-like with mouth, tentacles facing
upward
Medusa - answer Bell-like with mouth, tentacles facing downward
Cnidarian Types: - answer Hydrozoans
