CBSE Class 9 Answered
Hi Aniket,
Kingdom Animalia is divided into two major phyla—Phylum Invertebrata and Phylum Vertebrata.
Classification of Phylum Invertebrata
PHYLUM |
CHARACTERISTICS |
EXAMPLES |
Porifera |
Simplest multicellular animals with a perforated body. |
Sycon, bath |
Coelenterata |
Have a two-layered body wall. |
Hydra, jellyfish |
Platyhelminthes |
Small, soft, flattened, unsegmented worms which do not have a body cavity or a coelom. |
Liver fluke, tapeworm |
Annelida |
Possess a true body cavity called coelom. |
Earthworm, leech |
Nemathelminthes |
The body is long, cylindrical and unsegmented without a body cavity. |
Hookworm, Ascaris |
Arthropoda |
Have jointed limbs and an exoskeleton made of chitin. |
Crayfish, crab |
Mollusca |
Have a soft, unsegmented body without appendages, with a hard, calcareous shell to protect the soft body. |
Snail, slug |
Echinodermata |
The body may be spherical, cylindrical or star-shaped, hard and unsegmented. Possess a spiny exoskeleton. |
Starfish, brittle star |
Urochordata |
Triploblastic animals with a coelom which show bilateral symmetry. |
Balanoglossus, Amphioxus |
Classification of Phylum Vertebrata
CLASS |
CHARACTERISTICS |
EXAMPLES |
Pisces |
Organisms belonging to Class Pisces are fish which are cold-blooded or poikilothermic animals. |
Shark, dogfish |
Amphibia |
Cold-blooded vertebrate animals which have a body divisible into head and trunk. Neck is absent. |
Frog, toad |
Reptilia |
The body is divisible into head, neck, abdomen and tail. |
Lizard, snake |
Aves |
All birds belong to Class Aves which are warm blooded or homeothermic animals. |
Pigeon, sparrow |
Mammalia |
Warm-blooded animals which give birth directly to their young ones. |
Cat, dog |
Hope you find this useful..
Happy studying!!