Animal Kingdom Flashcards
name all the phylum of animal kingdom.
- porifera
- cnidaria/coelenterate
- ctenophore
- Platyhelminthes
- ascelminthes
- Annelida
- Arthropoda
- Mollusca
- Echinodermata
- hemichordates
- chordates
what is metazoa?
multicellular eukaryotic cell with holozoic nutrition
types of metazoa and their range
parazoa- cellular level (porifera)
eumetazoa- tissue, organ and organ system level (coelenterate to chordate)
type of organization in porifera
cellular
tissue level type of organization is in ?
coelenterate, ctenophore
organ level type of organization is in ?
platyhelmintes
organ system type of organization is in ?
asccelmintes -chordates
types of digestion system and range
incomplete ( blind sac body plan) - mouth and anus same hole (coelenterates to Platyhelminthes )
complete (tube within tube)-mouth and anus diff hole(achelminthes - chordata )
types of circulatory system and range
open - blood pumped by heart into body cavity sinus (all non chordates except Annelida and cephalopod class of Mollusca ) closed - blood pumped into well developed blood vessels (chordates Annelida and cephalopods )
types of body symmetry
asymmetry - body cannot be divided into two halves by any plane passing thru the center
radial symmetry - body can be divided into two halves by only one plane passing thru the center.
bilateral symmetry - by any plane passing thru the center
range of body symmetry
- asymmetry - porifera
- radial - coelenterate, ctenophore and Echinodermata and sessile organisms
- bilateral - platyhelminthes to chordate except echinodermata
what does bilateral symmetry help in ?
cephalisation : formation of leaf
germ layer type and range
diploblastic - ectoderm endo and mesoglial undiffrentiaed cells (coeletrata, ctenophora)
triploblastic - endo medo and ecto (platy - chordates )
what is coelem?
large fluid filled spaces between the outer body wall and inner gut wall .
- surrounded by mesoderm by all sides
types of coelom and range ?
acoelomate - absent (pori - platy)
pseudocoelomate- false (ascel)
coelomate or eucoelomate- annelida to chordata
types of eucoelomate and range ?
schizocoelomate - formed by splitting of mesoderm annelida - mollusca
enterocoelomate- arise form embyonic gut wall
echino - chordata
other name for segmentation ?
metamerism
what is segmentation and range
segments and matamer present internally as well as externally CHORDATA , ANNELIDA AND ARTHROPODA
describe notochord and stomochord
arises from mesoderm I doesnt rise from mesoderm
felxible solid rod present dorsally I flexible hollow
in chordates only I in hemichordates only
diff btw notochord and nerve cord
part of
1) skeletal system I 1) nervous system
2) only in chordates dorsally I 2) both non chordates (ventrally and solid) and chordates (dorsally and hollow)
types of tube within tube body plan
protostonic - first mouth then anus (ascel - mollusca)
deuterostonic - first anus then mouth (echino - chordata)
