animal kingdom Flashcards
radial symmetry
ANY plane passing through the central axis can divide the organism into two equal halves
ex- coelntrata
ctenophora
adult echinoderms
bilateral symmetry
when the body can be divided into identical left and right halves only in ONE PLANE
ex- platyhelminthes through chordata and larvae echenoderms
coelom
a body cavity lined with mesoderm
coelentrata
both intracellular and extracellular development
; have a central gastro vascular cavity with a single opening on the hypostome
; show metagenesis
ctenophora
body bears 8 external rows of ciliated comb plates which help in LOCOMOTION
; bioluminiscene
level of organization
cellular level - porifera
tissue level - coentrata and ctenophora
organs performing specific fucntion - platyhelminthes
organ system - annelids through chordata
chordata
presence of notochord paired phrangeal gill silts post anal tail CNS IS DORSAL HOLLOW AMD SINGLE ventral heart urochordata/tunichordata - ascidia, salpa, doliolum cephalochordata - branciostoma (order-amphioxus) (genera-lancelette) vertebrata
cyclostoma
agnatha ectoparasites 6-15 pair of gill slits scales absent paired finns absent cartilagenous vertebral column cartilagenous cranium
chondrichthyces skin, scales and teeth and gill silts
tough skin
placoid scales
teeth modified placoid scales directed backwards
gill slits without operculum
air chamber is present in which gnathostoma pisces
osteoichtyces
electric organs
poison sting
torpedo
trygon
habitat of types of pisces
chondro- marine
osteo- both marine and fresh water
location of mouth in different type of pisces
chondro- ventral
osteo- terminal
[VT]
osteo scales and gill slits
ctenoid/cycloid scales
4 pairs of gill slits covered with operculum on each side
fertiliztiom in different type of pisces
chondro- internal and viviparous
osteo- exeternal and oviparous
amphibian skin
moist WITHOUT SCALES
what is cloaca and what animals posses it
common chamber where alimentary canal, urinary bladder and reproductive tract open into
present in ambhibia
fertilization in amphibia?
external
oviparous
indirect development
ichthyophis
limbless amphibia
reptilian skin
dry and cornified skin
presence of epidermal scales known as SCUTES
ear situation in amphibia vs reptiles
amph- tymanum represents the ear
rept- external ear opening absent, tymapnum represpenets ear
avian skin
dry without scales except the oil glands which is present at the base of tail
hind limbs generallu have scales
what is crop and grizzard and it;s a characteristic feature of?
additional chamber of the digestive tract
birds
origin of nervous system
coelentrata
in porifera, fertilization is _ and the development is _
internal
indirect
poriferan digestion is _
intracellular
in poriferans, sexes are _
not separate i.e they are hermaphrodite
the name cnidaria is derived from / which contains /
cnidocytes/ cnidoblasts
stinging capsule/ nematocytes
nematocytes are present on the _
tentacles and the body
function of cnidoblast
anchorage
defense mechanism
prey capture
a central gastro vascular cavity is a characteristic of _
write more ab the cavity
coelenterata
,, the cavity has a single opening with mouth on the hypostome
digestion in coelentrata
both extra cellular and intra cellular
digestion in ctenophores
both extra cellular and intra cellular
fertilization and development in ctenophora
external
indirect
hooks and suckers in platyhelminthes are found in the _ form
parasitic
_ in platyhelminthes help in osmoregulation and excretion
flame cells
sexes in platyhelminthes are _
not seperate
fertilization nd development in platyhemninthes
internal
through various larval stges
alimentary canal is complete with a well developed muscular pharynx is a characteristic of _
aschelmenthis
in aschelminthes _ removes body wastes from the body through a _
excretory tube
excretory pore
sexes are _ in aschelminthes
seperate
fertilization and development in aschel
internal
direct or indirect
ascaris is aka wuschereria is aka ancyclostoma is aka enterobius is aka and all of these are examples of _
round worm filarial worm hookworm pinworm aschelminthes
annelids posses _ and _ muscles which help them in _
longitudinal & circular
locomotion
nereis is an _ annelid and they contail lateral appendages called _ which help in _
aquatic
parapodia
swimming
_ help in osmoregulation and excretion in annelid
nephridia
neural system in annelid contains of _ _ connected by _ _ to a _ _ _
paired ganglia
lateral nerves
double ventral nerve cord
nereis -
earthworm and leeches -
dioecious
monoecious
body of arthropoda consist of
head
thorax
abdomen
respiratory organs in arthropoda
book lungs
book gills
gills
tracheal system
arthropoda have _ circulatory system
open
sensory organs in arthropoda
antennae
eyes (compound or simple)
statocysts
balance organs
excretory organ in arthropoda
malphigian tubule
fertilization and development in arthropoda
internal
indirect or direct
arthropoda are oviparous or viviparouos?
MOSTLY OVIPAROUS
BODY OF A MOLLUSC
covered by a calcareous shell unsegmented distinct head muscular foot visceral hump
feather like gills in mollusc are present in the _
mantle cavity
mantle cavity is the space between _ & _ and is found in _
hump and mantle
mollusc
feather like gills in mollusc perform the function of
respiration and excretion
in m
in mollusc, the _ head region has _ tentacles
anterior
sensory
what’s radula and it is a charachteristic feature of what?
mouth of a mollusc contain a file like rasping organ called radula
digestive system of an echinoderm is _ with mouth on the _ side and anus on the _ side
complete
lower/ ventral
upper/ dorsal
L-VAD
water vascular system
found in echinoderms
help in locomotion
capture and transport of food
respiration
echinoderms have an excretory system, true or false
false, they don’t
fertilization and development in echinoderms
usually external
indirect with free swimming larvae
worm like marine animals
hemichordata
circulatory system in hemichordata
open
excretory organ in hemichordates
proboscis glabd
fertilisation and development in hemichordates
external
indirect
