Question

name and write any four characters features of phylum annelida .write the names of two animals included the phylum​

Answer 1

Answer:

Annelids are defined as triploblastic, bilaterally symmetrical, metamerically segmented, a coelomate worm with a thin flexible cuticle around the body

Answer 2

Annelida

$\bigstar$ The organisms are Triploblastic, bilaterally symmetrical, coelomates with Organ system level of body organization.

$\bigstar$ They may be aquatic or terrestrial forms.

$\bigstar$ Digestive system is complete and digestion is extracellular.

$\bigstar$ Blood vascular system is usually closed.

$\bigstar$ Reproduction is sexual. the sexes may be separate (nereis) or United (earthworm).

$\bigstar$ Sensory organs include tactile Organs, taste bud, photoreceptor cells and eyes.

$\bigstar$ Respiratory pigments either haemoglobin or erythrocruorin dissolved in blood plasma.

$\bigstar$ Nephridia helps in excretion and osmoregulation.

Example : Earthworm, blood sucking leech, Nereis, Hirufinaria.