Question

name the ten phyla under the neo-chordrates
as per non conventional system of animal classification​

Answer 1

Explanation:

Classification of Animal Kingdom – Porifera, Coelenterata, Platyhelminthes, Aschelminthes, Annelida, Arthropoda, Mollusca, Echinodermata, Chordata.

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Answer 2

Answer:

The phylum under non chordates are:

1.Phylum porifera:

• They are also called as sponges.
• They have aquatic habitats.
• They are asymeetrical or radially symmetrical and is diploblastic.
• They have cellular level of body organization and is acoelomate.
• They have a water canal system
• Some examples are spongilla, sycon, euspongia etc

2.Phylum coelentrata:

• They are also called as cnidarians.
• They have cnidoblasts which are also called as stinging cells.
• They are aquatic and has cellular level of body organization.
• They are diploblastic.
• They show polymorhism and exist in two forms either as polyp or as medusa.
• They show the property of metagenesis (alternation of generation)
• Some examples are Obelia,  Hydra etc

3.Phylum Ctenophora:

• They are also called as sea walnuts or comb jellies.
• They have a biradial symmetry and is acoelomate
• They have a tissue level body organization.
• They have eight rows of ciliary bands called as comb plates.
• Some examples are ctenoplana, pleurobrachia etc

4.Phylum Platyhelminthes:

• They are commonly called as flatworms.
• The organisms are bilaterally symmetric and is triploblastic.
• They have organ level body organization.
• They have specialised cells called flame cells for excretion and osmoregulation.
• They are mostly hermaphrodites.
• Some examples are Planaria which posess the ability of regeneration and liver fluke.

5.Phylum Aschelminthes:

• They are also called as roundworms.
• They are triploblastic with bilateral symmetry.
• They have organ system level of body organization.
• They have a complete digestive system.
• They possess pseudocoelom.
• Some examples are Ascaris and Wuchereria bancrofti.

6.Phylum Annelida:

• They are aquatic or terrestrial.
• They are coelomate and bilaterally symmetrical.
• They are triploblastic.
• They have a closed circulatory system.
• Nephridia helps in excretion and osmoregulation.
• Examples are nereis and aphrodita.

7.Phylum Arthropoda:

• This is the largest phylum.
• They have jointed appendages.
• They have a blood filled cavity called as haemocoel.
• Their body is divided into head , thorax and abdomen
• Examples are daphnia and spider

8.Phylum Mollusca:

• They are triploblastic and coelomate
• They have organ system level of body organisation.
• The body is divided into head, visceral hump and mantle.
• They have chitinous teeth called as radula
• Examples are chiton and dentalium.

9. Phylum Echinodermata:

• They are triploblastic and has organ system level of body organization.
• They are radially symmetrical.
• They have a water vascular system.
• Examples are ophiothrix and asterias.

10. Phylum Hemichordata:

• Their body is divided into proboscis, collar and trunk.
• They have pharyngeal gill slits and notochord is present in embryonical stage.
• The subphylums in this phylum are:

1. Urochordata
2. Cephalochordata

• Some examples are Balanoglossus and saccoglossus.