Chapter - 6.2 Part - 1
Animal Classification
Part - 2
Phylum Annelida:-
- Body long, cylindrical & metamerically segmented.
- Few are ectoparasites.
- Triploblastic.
- Parapodia or suckers for locomotion.
- Body covered with special cuticle
- Hermaphrodite or unisexual
Eg. Earthworm, Leech, Nereis, etc.
Phylum - :-Arthopoda:-
- Animals have joint appendages
- Triploblastic , eucoelomate , bilaterally, symmetrical, segmented.
- Animals are unisexual
Eg Crab, Spider, Scorpion, Miilipede, Centipede, Cockroach, Butterfly, Honey bee.
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| 10 class note |
Phylum :- Mollusca:-
- Body is soft and slimy.
- Second largest phylum in animal kingdom.
- Aquatic or terrestial.
- Triploblastic ,eucoelamate, non segmented and soft.
- Visceral mass is covered with mantel .
- Animals are unisexual
- Eg;-Bivalve , Snail , Octopus.
Phylum:- Echinodermata:-
- Calcareous spines are present.
- Found only in ocean.
- Triploblastic, eucoelamate, radially symmetrical.
- Tube feet
- Calcareous spines.
- Ability of regeneration,
- trunk.
- Noto chord is present
- Also called as ‘acorn worms’
- Marine animals burrows in sand.
- They are unisexual or some may be hermaphrodite.
- Eg :- Balanoglossus, Saccoglossus.
Phylum :-Chordata:-
- Animals are mostly unisexual.
- Eg : Starfish, Sea-urchin, Brittle star ,Sea-cucumber, etc
Phylum –Hemichordata:-
- Body divided into three parts as proboscis, collar and
- Notochord is present in the body.
- Pharyngeal gill slits are present.
- Single ,tubular spinal .
- Heart is present on ventral side of body.
A) Sub Phylum –Urochordata.
B) Sub Phylum –Cephalochordata
C) Sub Phylum –Vertebratal Craniata .
D) Sub Phylum -Vertebrata is divided into six classes.
a) Class – Cyclostomata
b) Class –Pisces .
c) Class –Amphibia.
d) Class- Reptilia .
e) Class- Aves.
f) Class- Mammalia.
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