Ch. 33 pt 2 Flashcards
What are the three types of coelomates
1) protostomes
2) deuterostomes
3) lophophorates
lohpophore
ciliary feeding device that functions in respiration
What are the 3 phylums of lophophorates?
1) Phoronida
2) Bryozoa
3) Brachiopoda
Characteristics of phylum phoronida (2)
1) tube-dwelling marine worms
2) secretes tube in ground, lophophore sticking out
Characteristics of phylum bryozoa (2)
1) Small colonial animals
2) secretes and lives in zoecium
Characteristics of phylum brachiopoda (2)
1) 2 shelled marine
2) dorsal and ventral valve
characteristics for Mollusca body (5)
1) soft 3 part body sometimes covered in shell
3 parts: foot, visceral mass, mantle
2) coelum around heart
3) open cirulatory system (except Cephalopoda)
4) metanephridia
5) radula
characteristics for Mollusca reproduction (4)
1) separate sexes (except snails)
2) gonads in visceral mass
3) external fertilization
4) ciliated larva (trochophore)
Radere
scrape
4 classes of Mollusca
1) Polyplacophor
2) Gastropoda
3) Bivalvia
4) Cephalopoda
poly
many
placo
plate
characteristics of Polyplacophora (2)
1) 8 dorsal plates
2) suction cup foot
Characteristics of Gastropoda (3)
1) eyes on tentacles
2) move with foot (rippling motion)
3) land snails use vascular mantle for gas exchange
Characteristics for Bivalvia (7)
1) shell with two halves
2) adductor muscle keeps it together
3) no head
4) can open shell so foot can move or anchor (scallops move by clapping valves)
5) gills: feeding (mucus), gas exchange
6) cilia move food from gills to mouth
7) incurrent & excurrent siphons move water over gills
characteristics of Cephalopoda (7)
1) complex, fast, marine predator
2) closed circulatory system
3) beak-like jaw
4) foot modified into muscular siphon
5) change color
6) developed brain (ability to learn), and developed sense organs
7) nervous system
Characteristics of phylum annelida (7)
1) segments divided by septum
2) coelum acts as hydrostatic skeleton
3) movements: circular and longitudinal muscles
4) double transport system: circulatory system & coelomic fluid
5) digestive system complete and unsegmented
6) external sexual reproduction, fission asexual reproduction
7) have setae (except leaches)
characteristics of class clittelata (2 types)
earthworms: eat through soil, extract nutrients
Hirudinea (leaches): hirudin (anticoagulant)
characteristics of class Polychaeta (4)
1) each segment contains parapodia
2) parapodia function for gills and locomotion
3) parapodium contain several setae
4) setae provide traction when crawling
setae
bristle
characteristics of phylum Arthropoda (9)
1) exoskeleton: chitin and proteins
2) segments for locomotion, food handling, and reproduction
3) tagmata: fused segments
4) extensive cephalization (5 senses and balance)
5) ommatidia: compound eyes
6) open circulatory system
7) gas exchange: gills, tracheal system with spiracles, book lungs
8) complete digestive system
9) excretory: mentanephridia, Malpighian tubules
characteristics of subphylum chelicerata (2)
1) 2 tagmata: cephalothorax, abdomen
2) 4 pairs of legs, pedipalp, chelicerae
characteristics of subphylum crustacea (3)
1) swimmerets
2) cuticle covering cephalothorax
3) metanephridia
2 classes of subphylum myriapoda
1) Diplopoda: millipedes, 2 pairs of legs per segment and herbivores
2) Chilopoda: centipedes, 1 pair of legs per segment and carnivores with poisonous claws
chilo
lip
Characteristics for subphylum Hexapoda (3)
1) antennae for smelling
2) separate sexes with internal fertilization
3) metamorphosis
2 types of metamorphosis
complete: 4 stages with adult and larval stages different
incomplete: 3 stages with young resembling adults
Characteristics of Phylum Echinodermata (8)
1) 5 part modified radial symmetry larvae are bilateral
2) no cephalization
3) simple nervous system (no brain)
4) endoskeleton covered with spines and pedicellariae
5) water vascular system with tube feet functioning in movement, gas exchange, and feeding
6) complete digestive system
7) no excretory organs (respire and excrete by diffusion)
8) autotomy
what is autotomy?
intentionally detaching body part that will later regenerate
auto
self
-tomy
cutting
Echinodermata reproduction
separate sexes with external fertilization
5 classes of Phylum Echinodermata
1) Asteroidea
2) Ophiuroidea
3) Echinoidea
4) Crinoidea
5) Holothuroidea
Characteristics of Class Asteroidea
1) regenerate lost arm
2) Feed on bivalves by prying them open and inserting the stomach with enzymes
ex) seastar
aster
star
ophiuroidea
Brittle star
ophis
snake
Echinoidea
no arms but have 5 rows of tube feet
ex) sea urchins and sand dollars
erchin
spiny
Crinoidea
use their arms in suspension feeding
ex) sea lilies
Krinon
lily
Holothuroidea
1) reduced endoskeleton
2) sea cucumbers have 5 rows of tube feet, some are feeding tentacles
3) breath through anus
Holo
whole
