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Pinacoderm is
 

Option: 1

name of body wall of coelenterates
 


Option: 2

outer body layer of sponges
 


Option: 3

inner body layer
 


Option: 4

middle layer of body wall
 


Answers (1)

 

 

Body Wall of Porifera -

The body wall of sponges can be differentiated into the following layers:

  • The outermost layer called outer epithelium or pinacoderm. It is made up of cells called pinacocytes. These cells are scale-like and thin with a prominent nucleus.
  • The innermost layer called the inner epithelium or choanoderm. It is made up of choanocytes or collar cells. These cells trap and digest the food particles coming in through the water current via the ostia.
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The outermost layer called outer epithelium or pinacoderm. It is made up of cells called pinacocytes. These cells are scalelike and thin with a prominent nucleus.

Posted by

Sumit Saini

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