InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
At present, the Dipnoans are distributed overA. Europe and North AmericaB. Latin America and AustraliaC. Europe and Latin AmericaD. North America and Australia |
|
Answer» Correct Answer - B Leucosolenia shows simplest (ascon) type of canal system. In this, surrounding water enter the canal system through ostia. This water of sea enters into the spongocoel and pushed out readily thorugh osculum. Course taken by the water current in the body of spongs may be shown as under. Ingressing `underset("Ostia")overset("Through")(rarr)` Spongocoel `underset("Osculum")overset("Through")(rarr)` To outside |
|