Sponges, Cnidarians, and Ctenophores

Sponges belong to which group of animals?

• Vertebrates
• Invertebrates

What is the name of the phylum sponges belong to?

• Cnidaria

• Arthropoda

• Echinodermata

• Porifera

___________ are tiny hard particles that give a sponge support and can provide protection if they are made out of calcium carbonate or silica glass.

• spongin

• bones

• buds

• spicules

cells have sticky, funnel-shaped collar to collect food particles and a flagellum that creates a water current

• amoebocyte
• ostiocyte
• pinacocyte
• choanocyte

How do sponges obtain food?

• filter it from the water

• grasp it with tentacles

• pry it apart with tube feet

• put it in their mouth with jointed legs

What is true about sponges?

• They have organs

• They have tissues

• They have a backbone

• They are animals

The cells inside the sponge that have flagella (and absorb food) are called...

• Collar cells

• Flagella

• Osculum

• Pores

Which one is NOT true about sponges?

• They are multicellular

• They are autotrophs

• They are eukaryotes

• They are the simplest animals on Earth

Asexual sponge reproduction where a piece of the adult sponge breaks off and settles in a new area growing to adulthood.

• broadcast spawning
• branching
• budding
• forcast spawning

True/False: Sponges reproduce by both sexual and asexual reproduction.

• True

• False