Question

Which of the following characteristics is true about molluscan?

• A. The presence of metameric sgmentation
• B. The presence of mantle cavity and coelom cavity
• C. The presence of tissue level of organisation
• D. The presence of chitinous exoskeleton

Answer 1

Answer: (B)

The presence of mantle cavity and coelom cavity

The general characteristic of molluscs is they are unsegmented and bilaterally symmetrical. In mollusca organ system level of organization is seen. The mantle cavity in mollusc is formed by the mantle skirt, a double fold of mantle which encloses a water space. This mantle cavity contains the mollusc's gills, anus, and organs for taste, excretion and reproductive organs.

So, the correct answer is 'The presence of mantle cavity and coelom cavity'.