Question

In Which of the following group of animal phyla, organs have associated to form functional systems, concerned with a specific physiological function?
(a) Porifera, Annelids, Arthropods & chordates
(b) Annelids, Arthropods, Molluses & ctenophore
(c) Arthropods, Annelida, Mollusca, Echinodermata & chordata
(d) Chordata, Ctenophora, Coelenterata & Mollusca.

Answer 1

Answer: opt c-

Arthropods, Annelida, Mollusca, Echinodermata & chordata

Explanation: as these all are advanced phylas with organ system level of organization.

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