Question

P - It has pseudocoelom.
Q - It has nematoblasts for defence.
R - It has osculum through which water exits.
S - It has nephridia for excretion.
Select the option that correctly identifies the
organisms (P-S).
P
Q
20
S
(1) Taenia Euplectella Fasciola Holothrix
(2) Nereis Aurelia
Pila
Antedon
(3) Ascaris Hydra
Chiton
Nereis
(4) Rhabditis Aurelia
Euplectella Nereis

Answer 1

answer is 4 rhabditis is aschehelminthes

aurelia is coelenterata

eupleutella is poriferan

nereis is in annelida

Answer 2

The correct options are: 4) P- Rhabditis, Q-Aurelia, R- Euplectella, and S- Nereis

Rhabditis:

• Rhabditis belong to the phylum Aschelminthes of kingdom Animalia.
• It has bilateral symmetry and three germinal layers (triploblastic).
• It has pseudocoelom.
• Other members of this phylum include Ancylostoma and Wuchereria.

Aurelia:

• Aurelia belongs to the phylum Coelenterata.
• Members of this phylum are diploblastic and have radial symmetry.
• They have nematoblasts (stinging cells) for defense and capturing of prey.
• Other members of this phylum include Hydra, Pennatula, and Adamsia

Euplectella:

• It belongs to the phylum Porifera.
• They are mostly asymmetrical.
• They have many pores on their body called Ostia and Osculum.
• Other members of this phylum include Euspongia and Spongilla.

Nereis:

• It belongs to the phylum Annelida.
• The members are coelomate, triploblastic, and have bilateral symmetry.
• Excretion is done with the help of nephridia.
• Other members of this phylum include Hirudinea and Pheretima.