Porifera Review

What type of symmetry do sponges have?

• bilateral

• radial

• assymetrical

What type of cells help circulate water through the sponge?

• amoebocytes

• choanocytes

• spicules

• osculum

Adult sponges are sessile while the larva are free swimming.

• true

• false

Which of the following is NOT a characteristic of sponges?

• Body wall penetrated by many pores.

• Cells organized into tissues

• Ciliated choanocytes that move water.

• Amoebocytes that transport food.

Tags

NGSS.MS-LS1-1

The hard spiny structures found in most sponges that are composed silica or calcium carbonate.

• spicules

• mesohyl

• spongin

• amoebocytes

What are the tiny openings(pores) through which water enters the sponge called?

• ostia

• amoebocytes

• collar cells

• choanocytes

Mesohyl is a gel-like substance found in the body of sponges that contain the specialized cells.

• true

• false

Tags

NGSS.MS-LS1-3

Respiration and excretion occurs by simple diffusion

• true

• false

Tags

NGSS.MS-LS2-3

What is the large cavity in the middle of the sponge called?

• osculum

• ostia

• spongocoel

• choanocytes

Describe the water flow through the sponge.

• In osculum out ostia

• In ostia out osculum