22. Annelid Identity card. How
are they characterized
according to examples of
representing beings, basic
morphology, type of
symmetry, germ layers and
coelom, digestive system,
respiratory system, circulatory
system,excretory system,
nervous system and types of
reproduction?

Gap-fill exercise

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Examples of representing :
earthworms, leeches, lugworms.
morphology: cylindrical body,
(metameric).Type of
symmetry: . Germ layers and
: triploblastics, coelomates.

Digestive : complete. Respiratory
system: or branchial.
Circulatory : closed, with
hemoglobin. system: a pair
metanephridia in each .
Nervous system: neural , a pair
of per metamere, anterior
of neurons (primitive
). Types of reproduction: ,
with dioecious and beings.