Porifera and Cnidaria

Sponges are classified in this phylym:

• Annelida

• Cnidaria

• Mammalia

• Porifera

How many openings does a sponge have?

• 1

• 2

• 5

• 10

The opening in a sponge is called a/an:

• choanocyte

• osculum

• nematocyst

• spicule

These types of cells in a sponge are also called collar cells:

• archaeocytes

• oscula

• nematocysts

• choanocytes

Which of the following is NOT true about sponges:

• fast swimmers

• sessile

• asymmetrical

• no nervous system

These hard particles of calcium or silicon dioxide make up the internal skeleton of a sponge:

• pores

• spicules

• choanocytes

• amoebocytes

How do sponges eat?

• They use stinging cells to paralyze their prey.

• They don't need to eat.

• Using sharp teeth

• By filter feeding

Most sponges reproduce in this way:

• sexually

• asexually

• budding

• amoebocytes

Tags

NGSS.MS-LS3-2

About how many species of sponges are there?

• 10-20

• 500-1000

• 5000-10,000

• 20,000

Tags

NGSS.HS-LS4-5

The word "Porifera" means:

• no nervous system

• sea nettle

• soft and squishy

• pore bearing