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The movement of water in syconoid type of canal system is

Option: 1

Dermal ostia >Canal >Spongocoel >Osculum


Option: 2

Dermal ostia >Incurrent canal>{prosoyle }>Radial canal>{Apopyle}>Spongocoel> Osculum


Option: 3

Dermal ostia >Incurrent canal >Flagellated chamber >Excurrent canal >Spongocoel >
Osculum


Option: 4

Pinacocytes >choanocytes >Enteron >Osculum


Answers (1)

 

 

 

Syconoid Type: 

  • In this type, the body wall is folded into finger-like projections called the radial canals. These radial canals open into the spongocoel through apopyles. 
  • The incurrent canals made up of ostia are connected to the radial canals through prosopyles. 
  • The route of water can be represented as: dermal pores → incurrent canals → prosopyles → radial canals → internal ostia (apopyles) → spongocoeL → osculum → out. 
  • For example, Scypha, Grantia etc.

 

 

 

In syconoid type of canal system, the body wall is folded into finger-like projections called the radial canals. These radial canals open into the spongocoel through apopyles. The
incurrent canals made up of ostia are connected to the radial canals through prosopyles. The route of water can be represented as: dermal pores incurrent → canals → prosopyles →radial canals → internal ostia (apopyles) → spongocoeL → osculum → out.

Posted by

Ramraj Saini

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