Question

explain how animals in vertebrates are classified into further subgroups

Answer 1

they are divided inro pisces, aves, repitilia, mammalia

Answer 2

kingdom 5: animalia :
two types organisation:
1.cellular level organisation .(cells are loosely packed)
*body contain phores.
phylem.1.parifera
2.tissues level organisation
* cells are tightly packed to form tissue/ organ.
coelem: are of three types:
1.a coelmate
* no coelem cavity
contains three phylems:
phy2.colentrate
phy.3 ctenophara
phy.4.platyhementhis
2.pseulococlomate:
*false coclem
contain one phylem:
phy.5.memtota ( aschelmenthis)
3.coclomate :
* true coclem present
*coclem cavity present
contains two derms:
1. produced by single cell of mesoderm
contain three phylem:
phy-6:annclida ( segmaded body)
Phy.7-artmopoda ( largest phylem).
phy.8- mollesca ( soft body animal).
2.coelem drive from pouches of endoderm
1.no notochord (gills)
1.phoryngeal gills slit absent
phy.9.echinodermata ( spiny skinned animal).
2.pharyngeal gills slits present
phy.10.hemichordata
2.notochord present PHY.11 chordata.
phylem11.chordata-notochord present
1.notochord present in larva or adult
* protochordata- subphylem
*lerochordata- notochord in tail
* cephalochordata- notochord extended
* from mouth to tail
2. subphylem - vertebrata notochord modify into vertebral column.
two types:
1.agnatha- no jaws * class- cyclostomata
2.gnatha- jaws present
gnatha is of two types:
1.pises(fish) - * locomotion by find
2.tetrophoda - * locomotion by 4 limbs
pises is of two types:
class 1.chandritchthyes -* soft bony fish
class 2.ostrichthyes* hard bony fish
tetrophoda contain 4 classes :
characters: class.3 amphibia
class.4.reptile
class.5. aves
class .5 . mammals
skin:
amphibia:moist due to muscuss glands.
reptile: dry,scales are horny.
aves: covered by feathers
mammals: covered by halrs
heart:
amphibia: 3 chambered ( 2 auricle 1 ventrical)
reptile: 3 chambered but exception crocodile 4 chambered (2 auricle 1 ventrical)
aves:4 chambered (2 auricle 2 ventrical)
mammals: 4 chambered (2 auricle 2 ventrical)
respiration by:
amphibia: skin of fishes or lungs on land
reptile: lungs for respiration
aves: lungs for respiration
mammals : lungs for respiration
body temperature:
amphibia:poikelotherms ( temperature of body change with environment temperature) cold blooded
reptile: cold blooded or poikelotherms
aves:warm blooded or homiotherms
mammals:warm blooded homiotherms
nature:
amphibia: oviparous (lay eggs)
reptile: oviparous
aves: oviparous
mammals: viviparous ( give birth to child)
bone:
amphibia:hard eg.frog
reptile: hard eg.snake
aves: pneumatic bone ( hollow bone) eg.birds
mammals:hard eg.catles humans