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Hemichordata (Body (organ system level, bilateral, triploblastic,…
Hemichordata
Body
organ system level
bilateral
triploblastic
coelomate
body is cylindrical
composed of an anterior proboscis, a collar and a long trunk
Life processes
Circulation
open
Respiration
gills
Excretion
Excretory organ is proboscis gland
Reproduction
sexes are separate
external fertilisation
Indirect development
MISC.
earlier considered a sub phylum under phylum Chordata
consists of worm-like marine animals
Examples
Balanoglossus
Saccoglossus