Explain the phylum Hemichordata in detail with examples
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HEYA GM ( NEARLY)
# PHYLUM Hemichordata ( Earlier placed under Chordata)
- They are Bilateral SYMMETRICAL
- Have Organ-system level of organization
- Triploblastic
- Eucoelomates
- They are Exclusively MARINE ...
- Special EXCRETORY UNIT --- PROBOSCIS GLAND
- Their Development is indirect-- Have TORNARIA LARVA
# EXAMPLES
(^^) Balanglossus
@ Saccoglossus
THANK YOU ✌✌✌✌
# PHYLUM Hemichordata ( Earlier placed under Chordata)
- They are Bilateral SYMMETRICAL
- Have Organ-system level of organization
- Triploblastic
- Eucoelomates
- They are Exclusively MARINE ...
- Special EXCRETORY UNIT --- PROBOSCIS GLAND
- Their Development is indirect-- Have TORNARIA LARVA
# EXAMPLES
(^^) Balanglossus
@ Saccoglossus
THANK YOU ✌✌✌✌
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PCB = PHYSICS, CHEMISTRY, BIOLOGY
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Answered by
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★ PHYLUM - HEMICHORDATA:-
→ Earlier considered as a sub-phylum under phylum Chordata, but now it is placed as a separate phylum under non-chordata.
→ Habitat - consists of a small group of worm-like marine animals.
→ Level of organization, symmetry, body cavity-organ-system level of organization, bilaterally symmetrical, triploblastic and coelomate animals.
→ Body shape and division - The body is cylindrical and is composed of an anterior proboscis, a collar and a long trunk.
→ Circulatory system is oen type.
→ Respiration is through gills.
→ Excretory organ is proboscis gland, Reproduction, fertilisation, development - Diocious animals, external Fertilisation, indirect Development.
Examples:- Balanoglossus and Saccoglossus.
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