Choose the incorrect option for phylum-Mollusca.

Question

Choose the incorrect option for phylum-Mollusca. (A) Body is covered by a calcareous shell and unsegmented (B) Feather-like gills present for excretion and respiration (C) The anterior head region has sensory tentacles (D) Mostly terrestrial, triploblastic and acoelomates

Tardigrade Admin · Accepted Answer

Option (d) is incorrect. It can be corrected as Molluscs are terrestrial or aquatic (marine or freshwater) having an organ system level of organisation. They are bilaterally symmetrical, triploblastic and coelomate, e.g. Pila.

Q. Choose the incorrect option for phylum-Mollusca.

Body is covered by a calcareous shell and unsegmented

Feather-like gills present for excretion and respiration

The anterior head region has sensory tentacles

Mostly terrestrial, triploblastic and acoelomates

Option (d) is incorrect. It can be corrected as Molluscs are terrestrial or aquatic (marine or freshwater) having an organ system level of organisation. They are bilaterally symmetrical, triploblastic and coelomate, e.g. Pila.