Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Medical
  • Types of canal system in porifera is /areOption: 1 Ascon typeOption: 2 Sycon type

Types of canal system in porifera is /are

Option: 1

Ascon type


Option: 2

Sycon type


Option: 3

Leucon type


Option: 4

All of these


Answers (1)

best_answer

 

 

Water Canal System in Porifera -

The canal system of sponges is made of ostia in body walls, spongocoel and osculum. It is of following three types: 

Asconoid Type: 

  • It is the simplest type of canal system.
  • The ostia present on the body wall lead to the spongocoel directly. 
  • The route of water can be represented as: water from exterior → incurrent pores → spongocoel → osculum → water out. For example, Leucosolenia.

 

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.

 

Leuconoid Type: 

  • It is characterised by highly folded thick walls such that the spongocoel is reduced to a large extent. 
  • The folds occur in the form of chambers.
  • The route of water can be represented as: dermal ostia → incurrent canals → flagellated chambers → apopyles → excurrent canals → larger channels → oscula → out. 
  • For example, Spongilla.
     

-

 

 

 

The canal system of sponges is made of ostia in body walls, spongocoel and osculum. It is of following three types:

a) Ascon type
b) Sycon type
c) Leucon type

Posted by

Info Expert 30

View full answer

NEET 2024 Most scoring concepts

    Just Study 32% of the NEET syllabus and Score up to 100% marks

Similar Questions

Trending Articles/News

anam-khan

BSc Nursing NEET cut-offs for AIQ seats, central universities; counselling process, fee details
anam-khan

NEET cut-off trends for MBBS in Tamil Nadu government, private medical colleges; counselling underway
anam-khan

NEET UG result 2025 withheld? Reasons, implications; here’s what to do

Latest Question