11 Questions
What is the skeleton composition of Class Calcarea sponges?
Separate calcareous spicules
Where are Class Calcarea sponges found?
Shallow waters in all oceans
What is the unique feature of Class Hexactinellida sponges' skeleton?
Siliceous spicules with six rays
Where are Class Hexactinellida sponges commonly found?
Deep tropical seas
What is the characteristic of Class Demospongiae in terms of species diversity?
Contains the largest number of sponge species
What type of spicules make up the skeleton of Class Calcarea sponges?
Calcareous spicules
Describe the body shape of Class Calcarea sponges.
Vase-like or cylindrical
What are the different structural types that Class Calcarea sponges may exhibit?
Asconoid, syconoid, or leuconoid structure
What is the size range of Class Calcarea sponges?
Less than 15 cm
What is the characteristic habitat of Class Hexactinellida sponges?
Deep tropical seas
What type of spicules form the skeleton of Class Hexactinellida sponges?
Siliceous spicules
Test your knowledge on the classification of porifera Class Calcarea, which have a skeleton of separate calcareous spicules and come in various body shapes. Learn about their structure and habitat.
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