Animal PHYLA Flashcards
What are common PORIFERA?
Sponges
Features of PORIFERA?(3)
- No tissues of organs
- Adults are sessile and larvae are motile to breed
- Nutrition through bacteria from water flittered
Diagram of a sponge?(4)
Pores- draw in water
Flagellum- circulate water
Spongocoel- water filed cavity(hydrostatic)
Osculum- single opening for ejecting water)
PORIFERA Symmetry, cephalisation, embryonic layers, coelom, gut, blood system?
Symmetry- asymmetry cephalisation- no anterior end Embryonic layers- cellular level of organisation coelom- acoelomate gut- none blood system- none
What skeleton in PORIFERA?
Hydrostatic (spongocoel)
What are common CNIDARIA?
hydra, coral sea anomie
Features of CNIDARIA?(4)
- aquatic
- stinging cell (nematocysts)
- nerve network- detect stimuli and react
- ectoderm- sting cells (poison)
endoderm- modified cells (digestion)
Diagram of a hydra?(6)
mouth- ingestion +egestion
mesoglea- non cellular layer
coelenteron- (sac like cavity- extra cellular digestion)
pedal/ basal disc- attachment and locomotion
tentacles- locomotion + sting pray
hypostome- ingestion
CNIDARIA Symmetry, cephalisation, embryonic layers, coelom, gut, blood system?
Symmetry- Radial cephalisation- no anterior end Embryonic layers- diploblastic coelom- acoelomate gut- blind gut blood system- none
What skeleton in CNIDARIA?
Hydrostatic (coelenteron)
What are common PLATYHELMINTHES?
flat worms: tapeworm
Features of PLATYHELMINTHES?(3)
- dorsoventrally flattened and soft allowing for greater surface to volume ratio allowing for gas + nutrient diffusion as body cells near gut and environment
- most aquatic- some parasites
- hermaphrodites (bisexual)
Diagram of a TAPE WORMS?(6)
+ Where found?
scolex- head hooks- attach to intestinal wall suckers neck strobila gravid proglottides- carries fertilised eggs
PLATYHELMINTHES Symmetry, cephalisation, embryonic layers, coelom, gut, blood system?
Symmetry- Bilateral cephalisation- yes, light detection nerve cells Embryonic layers- triploblastic coelom- acoelomate gut- blind gut blood system- none
What skeleton in PLATYHELMINTHES?
No skeleton
What are common ANNELIDA?
segmented worms- earth worm
Features of ANNELIDA?(3)
- Round segmented worms (segmented by membranes)
- separation of gut and body muscles- move independently
- specialised regions for efficient food processing
Diagram of EARTH WORM?(5)
+ Where found?
mouth- intake soil anus- expel undigested food chatea/ bristils- locomotion segments clitellum - reproduction found in moist soil- nocturnal to be protect from sun UV and drying out
ANNELIDA Symmetry, cephalisation, embryonic layers, coelom, gut, blood system?
Symmetry- Bilateral
cephalisation- yes, sensory organs making up simple brain
Embryonic layers- triploblastic
coelom- coelomic fluid- hydrostatic skeleton
gut- through gut
blood system- closed blood system- simple heart + blood vessels
What skeleton in ANNELIDA?
Hydrostatic (coelomic fluid)
What are common in all ARTHROPODA?
joined appendages and exoskeleton
Features of ARTHROPODA?(5)
- invertebrates
- hard exoskeleton made of CHITIN- prevents desiccation but sheds/ moults to grow making vulnerable
- segmented- specialised paired appendages
- Metamorphosis- body plans change during lifecycle
- wings, legs and gills allowing to occupy all environments
explain 4 classes of ARTHROPODS and features of each?
Insecta- 3 division(head, thorax, abdomen)
- 3 pairs of legs
- bees, flies
arachnida- 2 divisions
- 4 pairs of legs
- no antenna
- spiders scorpions
myriapods- many legs
- millipedes and centipedes
crustacea- 2-3 body divisions
- 5 pairs of legs
- 2 pairs of antenna
- crabs, cray fish
ARTHROPODA Symmetry, cephalisation, embryonic layers, coelom, gut, blood system?
Symmetry- Bilateral
cephalisation- yes, sensory organs (eyes+ antenna) making up simple brain
Embryonic layers- triploblastic
coelom- houses excretory organs
gut- through gut (different parts- specialised mouth)
blood system- open blood system- heamoceal
