Phylum Porifera Study Guide

How many species are there in Phylum Porifera?

• 8,500

• 80,000

• 86,600

• 1,000,000

Tags

NGSS.MS-LS4-2

What percentage of all invertebrates are sponges?

• Less than 1%

• 6%

• 60%

• 76%

What kingdom does Phylum Porifera belong to?

• Animalia

• Plantae

• Fungi

• Protista

Which of the following is a key trait of Phylum Porifera?

• Presence of organs

• Lack of organs and sensory structures

• Ability to fly

• Warm-blooded

What does it mean when a cell is totipotent?

• It means any cell can become another type of cell when needed.

• It means the cell can only divide but not change type.

• It means the cell cannot divide or change type.

• It means the cell can only become a reproductive cell.

Tags

NGSS.HS-LS1-4

Match the following classes of Phylum Porifera with their skeleton type:

• Calcarea

• Silica

• Hexactinellida

• Silica and spongin

• Demospongia

• Calcium carbonate

What is the large opening at the top of the sponge where the water flows out called?

• Osculum

• Spicule

• Choanocyte

• Ostium

What is the center cavity of the sponge called?

• Spongocoel

• Osculum

• Choanocyte

• Mesohyl

What are the tubular cells where water flows into the sponge called?

• Porocytes

• Choanocytes

• Amoebocytes

• Pinacocytes

What is the function of a Choanocyte in a sponge?

• It creates water currents to draw water and food particles into the sponge

• It transports nutrients

• It supports soft tissues

• It produces spicules

Tags

NGSS.MS-LS1-2