Question

which is not a feature of annelida
a)metameric segmentation
b)nephridia
c)pseudocoelom
d)clitellum​

Answer 1

Answer :

C) Pseudocoelom..

Explaination -

• presence of Pseudocoelom is the main characteristic of nematode phylum.
• it is not found in annelida.

What is Pseudocoelom ?

Pseudocoelom refers to the cavity between ectoderm and mesodem. as the name suggests pseudo refers to false here the syllables present in the form of scattered pouches is the true coelom is absent.

Eg : a round worm .

Other options

1. Metameric segmentation

metameric segmentation is one of the most important feature of annelida phylum the segments are present on their body. and it is the first phylum to show this.

2. Nephridia

It is the main excretory organ of annelida phylum it helps in removal of metabolic waste from their body.

3. Clitellum

It is the site where storage of egg in earthworms takes place. It secrets a fluid .

More points :

Annelida phylum contains mainly bilaterally symmetrical and triploblastic animals that have parapodia.

sensory organs are present in them.

Examples

• Earthworm
• Leech
• polychaete.

They are mainly hermaphrodite in nature .Means male and female sex organs are present together.