Marine Science - Kingdom Animalia: Phylum Porifera

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Which class of sponges is characterized by spicules made of calcium carbonate?

Demospongia

Pione vastifica

Hexactinellida

Calcarea (correct)

What is the main function of the choanocytes in sponges?

To produce toxic substances

To capture and digest food particles (correct)

To bore into coralline substrate

To provide structural support

Which type of sponge is commonly known as the 'red boring sponge'?

Hexactinellida

Calcarea

Pione vastifica (correct)

Demospongia

What is the main function of the archaeocytes in sponges?

To act as stem cells and perform various functions Signup and view all the answers

Which class of sponges is characterized by a skeleton made of four and/or six-pointed siliceous spicules?

Hexactinellida Signup and view all the answers

What is the main problem caused by the 'red boring sponge' (Pione vastifica) on oyster and mussel farms?

It encrusts and destroys the shells of the oysters and mussels. Signup and view all the answers

What is the main reason why sponges have few predators?

They synthesize toxic substances that make them unpalatable to predators. Signup and view all the answers

Which class of sponges has a skeleton made of fibers of the protein spongin, the mineral silica, or both?

Demospongia Signup and view all the answers

What is the maximum size that the 'red boring sponge' (Pione vastifica) can grow to?

1 m Signup and view all the answers

Which class of sponges is often referred to as 'glass sponges'?

Hexactinellida Signup and view all the answers

Marine Science - Kingdom Animalia: Phylum Porifera

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Questions and Answers

Which class of sponges is characterized by spicules made of calcium carbonate?

What is the main function of the choanocytes in sponges?

Which type of sponge is commonly known as the 'red boring sponge'?

What is the main function of the archaeocytes in sponges?

Which class of sponges is characterized by a skeleton made of four and/or six-pointed siliceous spicules?

What is the main problem caused by the 'red boring sponge' (Pione vastifica) on oyster and mussel farms?

What is the main reason why sponges have few predators?

Which class of sponges has a skeleton made of fibers of the protein spongin, the mineral silica, or both?

What is the maximum size that the 'red boring sponge' (Pione vastifica) can grow to?

Which class of sponges is often referred to as 'glass sponges'?

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