Question

Respiration by dermal gills (branchiae) and respiratory tree is performed by the animals of
A) Mollusca
B) Echinodermata
C) Protochordata
D) Arthropoda

Answer 1

ECHINODERMATA... ........

Answer 2

Answer:

(b) Echinodermata

Explanation:

• The echinoderm respiratory system is very straightforward across the board, however each phylum has its own set of respiratory adaptations.
• In general, echinoderms use simple diffusion to breathe, using gills or specialised appendages like tube feet or pockets to move water and oxygen throughout their body.
• Many echinoderms have a basic hemal system, which consists of a number of compartments and tubes that act as a vein and artery network.

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