Question

justify that earthworm is an annelid and not a nematode​

Answer 1

Answer:

Explanation:

Earthworms are Annelids but not a nematode:

1.Annelids have segmented body but nematods do not have.

2.Nematods are pointed at both ends but Annelids are not.

Answer 2

Answer:

The most distinguishing feature of an Annelid is that these worms have true segments. The body of these worms have distinct ring like segments, are bilaterally symmetrical, coelomate and triploblastic. They have parapodia that helps in locomotion.

The most distinguishing feature of a Nematode is that these worms have no segments in their body, and their epidermis have a single layer of cells. The body of these worms are small, slender, and may have ridges, rings or bristles, but they are in no way true segments.

An earthworm is observed to have a bilaterally symmetrical body that bears true segments and is triploblastic and coelomate. This is how we can justify that the earthworm is an "annelid" and not a "nematode".