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  • Mantle, foot and restricted coelom are the features of  Option: 1 SnailOption: 2 <

Mantle, foot and restricted coelom are the features of
 

Option: 1

Snail


Option: 2

Octopus


Option: 3

Sea slugs

 


Option: 4

All of these


Answers (1)

 

 

Body Plan of Mollusca:

  • Molluscs are unsegmented animals. 
  • The body may have a covering of hard calcareous shell. The body can be distinguished into three different parts as:
  • Head - sensory organs and mouth are present here
  • Muscular foot - used for locomotion
  • Visceral hump - dorsally placed and contains digestive system, excretory system and heart.
  • There is a soft and spongy layer of skin over the visceral hump called mantle. 
  • This mantle secretes calcium carbonate shell on its outer surface.
  • The space between the visceral hump and mantle is called mantle cavity. Gills are present in this cavity.
  • The general body plan of molluscs can be shown as follows:

-

 

 

 

Mantle, foot and restricted coelom are the features of mollusca.

Posted by

Sumit Saini

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