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Classification of Porifera Class Calcarea Quiz

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Classification of Porifera Class Calcarea Quiz

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Questions and Answers

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 Signup and view all the answers

What is the characteristic of Class Demospongiae in terms of species diversity?

Contains the largest number of sponge species Signup and view all the answers

What type of spicules make up the skeleton of Class Calcarea sponges?

Calcareous spicules Signup and view all the answers

Describe the body shape of Class Calcarea sponges.

Vase-like or cylindrical Signup and view all the answers

What are the different structural types that Class Calcarea sponges may exhibit?

Asconoid, syconoid, or leuconoid structure Signup and view all the answers

What is the size range of Class Calcarea sponges?

Less than 15 cm Signup and view all the answers

What is the characteristic habitat of Class Hexactinellida sponges?