Question

In: Biology

External structure of earthworm, ventral view

Transverse section through the body of earthworm

Expert Solution

External structure of earthworm on ventral view.

1) Body is cylindrical and divided into 100-120 true segments.

2) Colour reddish brown

3)Ventral surface presents :

Male Gential pores at 18th segment

Female genital pores at 14th segment.

-anterior end possess mouth and prostomium

- 1st body segment called prostomium

-at segment 14-16, covered by dark glandular tissue called clitellum which secretes mucus and albumin for coccon formation

- anus, at posterior end

-S shaped setae at all segments except 1,2 and clitellum responsible for locomotion.

Transverse section through body :

-Body wall: made up of

Cuticle

Epidermis

Mucosal layer

Coelomic layer

-Body cavity: called Schizocoel

gladiator answered 2 years ago

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